]>
Commit | Line | Data |
---|---|---|
ea2384d3 | 1 | /* |
fb43f4dd | 2 | * QEMU disk image utility |
5fafdf24 | 3 | * |
68d0f70e | 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
5fafdf24 | 5 | * |
ea2384d3 FB |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
80c71a24 | 24 | #include "qemu/osdep.h" |
c2a3d7da EB |
25 | #include <getopt.h> |
26 | ||
67a1de0d | 27 | #include "qemu-version.h" |
da34e65c | 28 | #include "qapi/error.h" |
c054b3fd | 29 | #include "qapi-visit.h" |
b3db211f | 30 | #include "qapi/qobject-output-visitor.h" |
7b1b5d19 | 31 | #include "qapi/qmp/qjson.h" |
335e9937 | 32 | #include "qapi/qmp/qbool.h" |
f348b6d1 | 33 | #include "qemu/cutils.h" |
3babeb15 | 34 | #include "qemu/config-file.h" |
1de7afc9 PB |
35 | #include "qemu/option.h" |
36 | #include "qemu/error-report.h" | |
06a1e0c1 | 37 | #include "qemu/log.h" |
3babeb15 | 38 | #include "qom/object_interfaces.h" |
9c17d615 | 39 | #include "sysemu/sysemu.h" |
26f54e9a | 40 | #include "sysemu/block-backend.h" |
737e150e | 41 | #include "block/block_int.h" |
d4a3238a | 42 | #include "block/blockjob.h" |
f364ec65 | 43 | #include "block/qapi.h" |
c2297088 | 44 | #include "crypto/init.h" |
06a1e0c1 | 45 | #include "trace/control.h" |
e8445331 | 46 | |
61979a6a | 47 | #define QEMU_IMG_VERSION "qemu-img version " QEMU_VERSION QEMU_PKGVERSION \ |
0781dd6e | 48 | "\n" QEMU_COPYRIGHT "\n" |
5f6979cb | 49 | |
c227f099 | 50 | typedef struct img_cmd_t { |
153859be SB |
51 | const char *name; |
52 | int (*handler)(int argc, char **argv); | |
c227f099 | 53 | } img_cmd_t; |
153859be | 54 | |
8599ea4c FS |
55 | enum { |
56 | OPTION_OUTPUT = 256, | |
57 | OPTION_BACKING_CHAIN = 257, | |
3babeb15 | 58 | OPTION_OBJECT = 258, |
eb769f74 | 59 | OPTION_IMAGE_OPTS = 259, |
b6495fa8 | 60 | OPTION_PATTERN = 260, |
55d539c8 KW |
61 | OPTION_FLUSH_INTERVAL = 261, |
62 | OPTION_NO_DRAIN = 262, | |
305b4c60 | 63 | OPTION_TARGET_IMAGE_OPTS = 263, |
fd03c2b8 | 64 | OPTION_SIZE = 264, |
dc5f690b | 65 | OPTION_PREALLOCATION = 265, |
4ffca890 | 66 | OPTION_SHRINK = 266, |
8599ea4c FS |
67 | }; |
68 | ||
69 | typedef enum OutputFormat { | |
70 | OFORMAT_JSON, | |
71 | OFORMAT_HUMAN, | |
72 | } OutputFormat; | |
73 | ||
e6996143 | 74 | /* Default to cache=writeback as data integrity is not important for qemu-img */ |
661a0f71 | 75 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 76 | |
00c6d403 | 77 | static void format_print(void *opaque, const char *name) |
ea2384d3 | 78 | { |
00c6d403 | 79 | printf(" %s", name); |
ea2384d3 FB |
80 | } |
81 | ||
ac1307ab FZ |
82 | static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...) |
83 | { | |
84 | va_list ap; | |
85 | ||
86 | error_printf("qemu-img: "); | |
87 | ||
88 | va_start(ap, fmt); | |
89 | error_vprintf(fmt, ap); | |
90 | va_end(ap); | |
91 | ||
92 | error_printf("\nTry 'qemu-img --help' for more information\n"); | |
93 | exit(EXIT_FAILURE); | |
94 | } | |
95 | ||
c9192973 SH |
96 | static void QEMU_NORETURN missing_argument(const char *option) |
97 | { | |
98 | error_exit("missing argument for option '%s'", option); | |
99 | } | |
100 | ||
101 | static void QEMU_NORETURN unrecognized_option(const char *option) | |
102 | { | |
103 | error_exit("unrecognized option '%s'", option); | |
104 | } | |
105 | ||
d2c639d6 | 106 | /* Please keep in synch with qemu-img.texi */ |
ac1307ab | 107 | static void QEMU_NORETURN help(void) |
ea2384d3 | 108 | { |
e00291c0 | 109 | const char *help_msg = |
5f6979cb | 110 | QEMU_IMG_VERSION |
10985131 | 111 | "usage: qemu-img [standard options] command [command options]\n" |
3f020d70 | 112 | "QEMU disk image utility\n" |
113 | "\n" | |
10985131 DL |
114 | " '-h', '--help' display this help and exit\n" |
115 | " '-V', '--version' output version information and exit\n" | |
06a1e0c1 DL |
116 | " '-T', '--trace' [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
117 | " specify tracing options\n" | |
10985131 | 118 | "\n" |
3f020d70 | 119 | "Command syntax:\n" |
153859be SB |
120 | #define DEF(option, callback, arg_string) \ |
121 | " " arg_string "\n" | |
122 | #include "qemu-img-cmds.h" | |
123 | #undef DEF | |
124 | #undef GEN_DOCS | |
3f020d70 | 125 | "\n" |
126 | "Command parameters:\n" | |
127 | " 'filename' is a disk image filename\n" | |
3babeb15 DB |
128 | " 'objectdef' is a QEMU user creatable object definition. See the qemu(1)\n" |
129 | " manual page for a description of the object properties. The most common\n" | |
130 | " object type is a 'secret', which is used to supply passwords and/or\n" | |
131 | " encryption keys.\n" | |
3f020d70 | 132 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" |
661a0f71 | 133 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
134 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
135 | " 'directsync' and 'unsafe' (default for convert)\n" | |
bb87fdf8 SH |
136 | " 'src_cache' is the cache mode used to read input disk images, the valid\n" |
137 | " options are the same as for the 'cache' option\n" | |
3f020d70 | 138 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
139 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
140 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
141 | " supported. 'b' is ignored.\n" | |
3f020d70 | 142 | " 'output_filename' is the destination disk image filename\n" |
143 | " 'output_fmt' is the destination format\n" | |
144 | " 'options' is a comma separated list of format specific options in a\n" | |
145 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
146 | " used format\n" | |
ef80654d WX |
147 | " 'snapshot_param' is param used for internal snapshot, format\n" |
148 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
149 | " '[ID_OR_NAME]'\n" | |
150 | " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n" | |
151 | " instead\n" | |
3f020d70 | 152 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
6e6e55f5 JS |
153 | " '-u' allows unsafe backing chains. For rebasing, it is assumed that old and\n" |
154 | " new backing file match exactly. The image doesn't need a working\n" | |
155 | " backing file before rebasing in this case (useful for renaming the\n" | |
156 | " backing file). For image creation, allow creating without attempting\n" | |
157 | " to open the backing file.\n" | |
3f020d70 | 158 | " '-h' with or without a command shows this help and lists the supported formats\n" |
6b837bc4 | 159 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 160 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
11b6699a PL |
161 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
162 | " contain only zeros for qemu-img to create a sparse image during\n" | |
163 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
164 | " unallocated or zero sectors, and the destination image will always be\n" | |
165 | " fully allocated\n" | |
c054b3fd | 166 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
167 | " '-n' skips the target volume creation (useful if the volume is created\n" |
168 | " prior to running qemu-img)\n" | |
3f020d70 | 169 | "\n" |
4534ff54 KW |
170 | "Parameters to check subcommand:\n" |
171 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
172 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
173 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 174 | " hiding corruption that has already occurred.\n" |
4534ff54 | 175 | "\n" |
2d9187bc PL |
176 | "Parameters to convert subcommand:\n" |
177 | " '-m' specifies how many coroutines work in parallel during the convert\n" | |
178 | " process (defaults to 8)\n" | |
179 | " '-W' allow to write to the target out of order rather than sequential\n" | |
180 | "\n" | |
3f020d70 | 181 | "Parameters to snapshot subcommand:\n" |
182 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
183 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
184 | " '-c' creates a snapshot\n" | |
185 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
186 | " '-l' lists all snapshots in the given image\n" |
187 | "\n" | |
188 | "Parameters to compare subcommand:\n" | |
189 | " '-f' first image format\n" | |
190 | " '-F' second image format\n" | |
86ce1f6e RS |
191 | " '-s' run in Strict mode - fail on different image size or sector allocation\n" |
192 | "\n" | |
193 | "Parameters to dd subcommand:\n" | |
194 | " 'bs=BYTES' read and write up to BYTES bytes at a time " | |
195 | "(default: 512)\n" | |
196 | " 'count=N' copy only N input blocks\n" | |
197 | " 'if=FILE' read from FILE\n" | |
f7c15533 RS |
198 | " 'of=FILE' write to FILE\n" |
199 | " 'skip=N' skip N bs-sized blocks at the start of input\n"; | |
e00291c0 PB |
200 | |
201 | printf("%s\nSupported formats:", help_msg); | |
00c6d403 | 202 | bdrv_iterate_format(format_print, NULL); |
f5048cb7 | 203 | printf("\n\n" QEMU_HELP_BOTTOM "\n"); |
ac1307ab | 204 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
205 | } |
206 | ||
3babeb15 DB |
207 | static QemuOptsList qemu_object_opts = { |
208 | .name = "object", | |
209 | .implied_opt_name = "qom-type", | |
210 | .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), | |
211 | .desc = { | |
212 | { } | |
213 | }, | |
214 | }; | |
215 | ||
eb769f74 DB |
216 | static QemuOptsList qemu_source_opts = { |
217 | .name = "source", | |
218 | .implied_opt_name = "file", | |
219 | .head = QTAILQ_HEAD_INITIALIZER(qemu_source_opts.head), | |
220 | .desc = { | |
221 | { } | |
222 | }, | |
223 | }; | |
224 | ||
7c30f657 | 225 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
226 | { |
227 | int ret = 0; | |
228 | if (!quiet) { | |
229 | va_list args; | |
230 | va_start(args, fmt); | |
231 | ret = vprintf(fmt, args); | |
232 | va_end(args); | |
233 | } | |
234 | return ret; | |
235 | } | |
236 | ||
ea2384d3 | 237 | |
4ac8aacd JS |
238 | static int print_block_option_help(const char *filename, const char *fmt) |
239 | { | |
240 | BlockDriver *drv, *proto_drv; | |
83d0521a | 241 | QemuOptsList *create_opts = NULL; |
b65a5e12 | 242 | Error *local_err = NULL; |
4ac8aacd JS |
243 | |
244 | /* Find driver and parse its options */ | |
245 | drv = bdrv_find_format(fmt); | |
246 | if (!drv) { | |
15654a6d | 247 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
248 | return 1; |
249 | } | |
250 | ||
c282e1fd | 251 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
a283cb6e | 252 | if (filename) { |
b65a5e12 | 253 | proto_drv = bdrv_find_protocol(filename, true, &local_err); |
a283cb6e | 254 | if (!proto_drv) { |
2867ce4a | 255 | error_report_err(local_err); |
83d0521a | 256 | qemu_opts_free(create_opts); |
a283cb6e KW |
257 | return 1; |
258 | } | |
c282e1fd | 259 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); |
a283cb6e KW |
260 | } |
261 | ||
83d0521a CL |
262 | qemu_opts_print_help(create_opts); |
263 | qemu_opts_free(create_opts); | |
4ac8aacd JS |
264 | return 0; |
265 | } | |
266 | ||
eb769f74 | 267 | |
efaa7c4e | 268 | static BlockBackend *img_open_opts(const char *optstr, |
ce099547 | 269 | QemuOpts *opts, int flags, bool writethrough, |
335e9937 | 270 | bool quiet, bool force_share) |
eb769f74 DB |
271 | { |
272 | QDict *options; | |
273 | Error *local_err = NULL; | |
274 | BlockBackend *blk; | |
275 | options = qemu_opts_to_qdict(opts, NULL); | |
335e9937 FZ |
276 | if (force_share) { |
277 | if (qdict_haskey(options, BDRV_OPT_FORCE_SHARE) | |
278 | && !qdict_get_bool(options, BDRV_OPT_FORCE_SHARE)) { | |
279 | error_report("--force-share/-U conflicts with image options"); | |
adb998c1 | 280 | QDECREF(options); |
335e9937 FZ |
281 | return NULL; |
282 | } | |
579cf1d1 | 283 | qdict_put_bool(options, BDRV_OPT_FORCE_SHARE, true); |
335e9937 | 284 | } |
efaa7c4e | 285 | blk = blk_new_open(NULL, NULL, options, flags, &local_err); |
eb769f74 | 286 | if (!blk) { |
143605a2 | 287 | error_reportf_err(local_err, "Could not open '%s': ", optstr); |
eb769f74 DB |
288 | return NULL; |
289 | } | |
ce099547 | 290 | blk_set_enable_write_cache(blk, !writethrough); |
eb769f74 | 291 | |
eb769f74 DB |
292 | return blk; |
293 | } | |
294 | ||
efaa7c4e | 295 | static BlockBackend *img_open_file(const char *filename, |
29cf9336 | 296 | QDict *options, |
eb769f74 | 297 | const char *fmt, int flags, |
335e9937 FZ |
298 | bool writethrough, bool quiet, |
299 | bool force_share) | |
eb769f74 DB |
300 | { |
301 | BlockBackend *blk; | |
34b5d2c6 | 302 | Error *local_err = NULL; |
ad717139 | 303 | |
29cf9336 DB |
304 | if (!options) { |
305 | options = qdict_new(); | |
306 | } | |
75c23805 | 307 | if (fmt) { |
46f5ac20 | 308 | qdict_put_str(options, "driver", fmt); |
75c23805 | 309 | } |
b9eaf9ec | 310 | |
335e9937 | 311 | if (force_share) { |
579cf1d1 | 312 | qdict_put_bool(options, BDRV_OPT_FORCE_SHARE, true); |
335e9937 | 313 | } |
efaa7c4e | 314 | blk = blk_new_open(filename, NULL, options, flags, &local_err); |
5bd31326 | 315 | if (!blk) { |
c29b77f9 | 316 | error_reportf_err(local_err, "Could not open '%s': ", filename); |
eb769f74 | 317 | return NULL; |
75c23805 | 318 | } |
ce099547 | 319 | blk_set_enable_write_cache(blk, !writethrough); |
b9eaf9ec | 320 | |
eb769f74 DB |
321 | return blk; |
322 | } | |
323 | ||
324 | ||
29cf9336 DB |
325 | static int img_add_key_secrets(void *opaque, |
326 | const char *name, const char *value, | |
327 | Error **errp) | |
328 | { | |
329 | QDict *options = opaque; | |
330 | ||
331 | if (g_str_has_suffix(name, "key-secret")) { | |
187f47e9 | 332 | qdict_put_str(options, name, value); |
29cf9336 DB |
333 | } |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
338 | static BlockBackend *img_open_new_file(const char *filename, | |
339 | QemuOpts *create_opts, | |
340 | const char *fmt, int flags, | |
341 | bool writethrough, bool quiet, | |
342 | bool force_share) | |
343 | { | |
344 | QDict *options = NULL; | |
345 | ||
346 | options = qdict_new(); | |
347 | qemu_opt_foreach(create_opts, img_add_key_secrets, options, &error_abort); | |
348 | ||
349 | return img_open_file(filename, options, fmt, flags, writethrough, quiet, | |
350 | force_share); | |
351 | } | |
352 | ||
353 | ||
efaa7c4e | 354 | static BlockBackend *img_open(bool image_opts, |
eb769f74 | 355 | const char *filename, |
ce099547 | 356 | const char *fmt, int flags, bool writethrough, |
335e9937 | 357 | bool quiet, bool force_share) |
eb769f74 DB |
358 | { |
359 | BlockBackend *blk; | |
360 | if (image_opts) { | |
361 | QemuOpts *opts; | |
362 | if (fmt) { | |
363 | error_report("--image-opts and --format are mutually exclusive"); | |
364 | return NULL; | |
365 | } | |
366 | opts = qemu_opts_parse_noisily(qemu_find_opts("source"), | |
367 | filename, true); | |
368 | if (!opts) { | |
369 | return NULL; | |
370 | } | |
335e9937 FZ |
371 | blk = img_open_opts(filename, opts, flags, writethrough, quiet, |
372 | force_share); | |
eb769f74 | 373 | } else { |
29cf9336 | 374 | blk = img_open_file(filename, NULL, fmt, flags, writethrough, quiet, |
335e9937 | 375 | force_share); |
75c23805 | 376 | } |
7e7d56d9 | 377 | return blk; |
75c23805 FB |
378 | } |
379 | ||
eb769f74 | 380 | |
83d0521a | 381 | static int add_old_style_options(const char *fmt, QemuOpts *opts, |
eec77d9e JS |
382 | const char *base_filename, |
383 | const char *base_fmt) | |
efa84d43 | 384 | { |
6750e795 MA |
385 | Error *err = NULL; |
386 | ||
efa84d43 | 387 | if (base_filename) { |
f43e47db | 388 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &err); |
6750e795 | 389 | if (err) { |
15654a6d JS |
390 | error_report("Backing file not supported for file format '%s'", |
391 | fmt); | |
6750e795 | 392 | error_free(err); |
c2abccec | 393 | return -1; |
efa84d43 KW |
394 | } |
395 | } | |
396 | if (base_fmt) { | |
f43e47db | 397 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &err); |
6750e795 | 398 | if (err) { |
15654a6d JS |
399 | error_report("Backing file format not supported for file " |
400 | "format '%s'", fmt); | |
6750e795 | 401 | error_free(err); |
c2abccec | 402 | return -1; |
efa84d43 KW |
403 | } |
404 | } | |
c2abccec | 405 | return 0; |
efa84d43 KW |
406 | } |
407 | ||
606caa0a MA |
408 | static int64_t cvtnum(const char *s) |
409 | { | |
f17fd4fd | 410 | int err; |
f46bfdbf | 411 | uint64_t value; |
606caa0a | 412 | |
f17fd4fd MA |
413 | err = qemu_strtosz(s, NULL, &value); |
414 | if (err < 0) { | |
415 | return err; | |
416 | } | |
f46bfdbf MA |
417 | if (value > INT64_MAX) { |
418 | return -ERANGE; | |
419 | } | |
f17fd4fd | 420 | return value; |
606caa0a MA |
421 | } |
422 | ||
ea2384d3 FB |
423 | static int img_create(int argc, char **argv) |
424 | { | |
a9300911 | 425 | int c; |
1da7cfbd | 426 | uint64_t img_size = -1; |
ea2384d3 | 427 | const char *fmt = "raw"; |
9230eaf6 | 428 | const char *base_fmt = NULL; |
ea2384d3 FB |
429 | const char *filename; |
430 | const char *base_filename = NULL; | |
9ea2ea71 | 431 | char *options = NULL; |
9b37525a | 432 | Error *local_err = NULL; |
f382d43a | 433 | bool quiet = false; |
6e6e55f5 | 434 | int flags = 0; |
3b46e624 | 435 | |
ea2384d3 | 436 | for(;;) { |
3babeb15 DB |
437 | static const struct option long_options[] = { |
438 | {"help", no_argument, 0, 'h'}, | |
439 | {"object", required_argument, 0, OPTION_OBJECT}, | |
440 | {0, 0, 0, 0} | |
441 | }; | |
6e6e55f5 | 442 | c = getopt_long(argc, argv, ":F:b:f:ho:qu", |
3babeb15 | 443 | long_options, NULL); |
b8fb60da | 444 | if (c == -1) { |
ea2384d3 | 445 | break; |
b8fb60da | 446 | } |
ea2384d3 | 447 | switch(c) { |
c9192973 SH |
448 | case ':': |
449 | missing_argument(argv[optind - 1]); | |
450 | break; | |
ef87394c | 451 | case '?': |
c9192973 SH |
452 | unrecognized_option(argv[optind - 1]); |
453 | break; | |
ea2384d3 FB |
454 | case 'h': |
455 | help(); | |
456 | break; | |
9230eaf6 AL |
457 | case 'F': |
458 | base_fmt = optarg; | |
459 | break; | |
ea2384d3 FB |
460 | case 'b': |
461 | base_filename = optarg; | |
462 | break; | |
463 | case 'f': | |
464 | fmt = optarg; | |
465 | break; | |
9ea2ea71 | 466 | case 'o': |
77386bf6 KW |
467 | if (!is_valid_option_list(optarg)) { |
468 | error_report("Invalid option list: %s", optarg); | |
469 | goto fail; | |
470 | } | |
471 | if (!options) { | |
472 | options = g_strdup(optarg); | |
473 | } else { | |
474 | char *old_options = options; | |
475 | options = g_strdup_printf("%s,%s", options, optarg); | |
476 | g_free(old_options); | |
477 | } | |
9ea2ea71 | 478 | break; |
f382d43a MR |
479 | case 'q': |
480 | quiet = true; | |
481 | break; | |
6e6e55f5 JS |
482 | case 'u': |
483 | flags |= BDRV_O_NO_BACKING; | |
484 | break; | |
3babeb15 DB |
485 | case OPTION_OBJECT: { |
486 | QemuOpts *opts; | |
487 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
488 | optarg, true); | |
489 | if (!opts) { | |
490 | goto fail; | |
491 | } | |
492 | } break; | |
ea2384d3 FB |
493 | } |
494 | } | |
9230eaf6 | 495 | |
b50cbabc | 496 | /* Get the filename */ |
a283cb6e KW |
497 | filename = (optind < argc) ? argv[optind] : NULL; |
498 | if (options && has_help_option(options)) { | |
499 | g_free(options); | |
500 | return print_block_option_help(filename, fmt); | |
501 | } | |
502 | ||
b8fb60da | 503 | if (optind >= argc) { |
ac1307ab | 504 | error_exit("Expecting image file name"); |
b8fb60da | 505 | } |
a283cb6e | 506 | optind++; |
b50cbabc | 507 | |
3babeb15 DB |
508 | if (qemu_opts_foreach(&qemu_object_opts, |
509 | user_creatable_add_opts_foreach, | |
51b9b478 | 510 | NULL, NULL)) { |
3babeb15 DB |
511 | goto fail; |
512 | } | |
513 | ||
1da7cfbd JS |
514 | /* Get image size, if specified */ |
515 | if (optind < argc) { | |
70b4f4bb | 516 | int64_t sval; |
606caa0a MA |
517 | |
518 | sval = cvtnum(argv[optind++]); | |
519 | if (sval < 0) { | |
79443397 LG |
520 | if (sval == -ERANGE) { |
521 | error_report("Image size must be less than 8 EiB!"); | |
522 | } else { | |
523 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
524 | "G, T, P or E suffixes for "); |
525 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
526 | "petabytes and exabytes."); | |
79443397 | 527 | } |
77386bf6 | 528 | goto fail; |
1da7cfbd JS |
529 | } |
530 | img_size = (uint64_t)sval; | |
531 | } | |
fc11eb26 | 532 | if (optind != argc) { |
ac1307ab | 533 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 534 | } |
1da7cfbd | 535 | |
9b37525a | 536 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
6e6e55f5 | 537 | options, img_size, flags, quiet, &local_err); |
84d18f06 | 538 | if (local_err) { |
c29b77f9 | 539 | error_reportf_err(local_err, "%s: ", filename); |
77386bf6 | 540 | goto fail; |
c2abccec | 541 | } |
a9300911 | 542 | |
77386bf6 | 543 | g_free(options); |
ea2384d3 | 544 | return 0; |
77386bf6 KW |
545 | |
546 | fail: | |
547 | g_free(options); | |
548 | return 1; | |
ea2384d3 FB |
549 | } |
550 | ||
f382d43a | 551 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 552 | { |
8599ea4c | 553 | QString *str; |
8599ea4c | 554 | QObject *obj; |
7d5e199a | 555 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
556 | |
557 | visit_type_ImageCheck(v, NULL, &check, &error_abort); | |
558 | visit_complete(v, &obj); | |
8599ea4c FS |
559 | str = qobject_to_json_pretty(obj); |
560 | assert(str != NULL); | |
f382d43a | 561 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c | 562 | qobject_decref(obj); |
3b098d56 | 563 | visit_free(v); |
8599ea4c FS |
564 | QDECREF(str); |
565 | } | |
566 | ||
f382d43a | 567 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
568 | { |
569 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 570 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
571 | } else { |
572 | if (check->corruptions) { | |
f382d43a MR |
573 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
574 | "Data may be corrupted, or further writes to the image " | |
575 | "may corrupt it.\n", | |
576 | check->corruptions); | |
8599ea4c FS |
577 | } |
578 | ||
579 | if (check->leaks) { | |
f382d43a MR |
580 | qprintf(quiet, |
581 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
582 | "This means waste of disk space, but no harm to data.\n", | |
583 | check->leaks); | |
8599ea4c FS |
584 | } |
585 | ||
586 | if (check->check_errors) { | |
f382d43a MR |
587 | qprintf(quiet, |
588 | "\n%" PRId64 | |
589 | " internal errors have occurred during the check.\n", | |
590 | check->check_errors); | |
8599ea4c FS |
591 | } |
592 | } | |
593 | ||
594 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
595 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
596 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
597 | check->allocated_clusters, check->total_clusters, | |
598 | check->allocated_clusters * 100.0 / check->total_clusters, | |
599 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
600 | check->compressed_clusters * 100.0 / | |
601 | check->allocated_clusters); | |
8599ea4c FS |
602 | } |
603 | ||
604 | if (check->image_end_offset) { | |
f382d43a MR |
605 | qprintf(quiet, |
606 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
607 | } |
608 | } | |
609 | ||
610 | static int collect_image_check(BlockDriverState *bs, | |
611 | ImageCheck *check, | |
612 | const char *filename, | |
613 | const char *fmt, | |
614 | int fix) | |
615 | { | |
616 | int ret; | |
617 | BdrvCheckResult result; | |
618 | ||
619 | ret = bdrv_check(bs, &result, fix); | |
620 | if (ret < 0) { | |
621 | return ret; | |
622 | } | |
623 | ||
624 | check->filename = g_strdup(filename); | |
625 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
626 | check->check_errors = result.check_errors; | |
627 | check->corruptions = result.corruptions; | |
628 | check->has_corruptions = result.corruptions != 0; | |
629 | check->leaks = result.leaks; | |
630 | check->has_leaks = result.leaks != 0; | |
631 | check->corruptions_fixed = result.corruptions_fixed; | |
632 | check->has_corruptions_fixed = result.corruptions != 0; | |
633 | check->leaks_fixed = result.leaks_fixed; | |
634 | check->has_leaks_fixed = result.leaks != 0; | |
635 | check->image_end_offset = result.image_end_offset; | |
636 | check->has_image_end_offset = result.image_end_offset != 0; | |
637 | check->total_clusters = result.bfi.total_clusters; | |
638 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
639 | check->allocated_clusters = result.bfi.allocated_clusters; | |
640 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
641 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
642 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
643 | check->compressed_clusters = result.bfi.compressed_clusters; |
644 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
645 | |
646 | return 0; | |
647 | } | |
648 | ||
e076f338 KW |
649 | /* |
650 | * Checks an image for consistency. Exit codes: | |
651 | * | |
d6635c4d HR |
652 | * 0 - Check completed, image is good |
653 | * 1 - Check not completed because of internal errors | |
654 | * 2 - Check completed, image is corrupted | |
655 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
656 | * 63 - Checks are not supported by the image format | |
e076f338 | 657 | */ |
1585969c AL |
658 | static int img_check(int argc, char **argv) |
659 | { | |
660 | int c, ret; | |
8599ea4c | 661 | OutputFormat output_format = OFORMAT_HUMAN; |
40055951 | 662 | const char *filename, *fmt, *output, *cache; |
26f54e9a | 663 | BlockBackend *blk; |
1585969c | 664 | BlockDriverState *bs; |
4534ff54 | 665 | int fix = 0; |
ce099547 KW |
666 | int flags = BDRV_O_CHECK; |
667 | bool writethrough; | |
7e7d56d9 | 668 | ImageCheck *check; |
f382d43a | 669 | bool quiet = false; |
eb769f74 | 670 | bool image_opts = false; |
335e9937 | 671 | bool force_share = false; |
1585969c AL |
672 | |
673 | fmt = NULL; | |
8599ea4c | 674 | output = NULL; |
40055951 | 675 | cache = BDRV_DEFAULT_CACHE; |
ce099547 | 676 | |
1585969c | 677 | for(;;) { |
8599ea4c FS |
678 | int option_index = 0; |
679 | static const struct option long_options[] = { | |
680 | {"help", no_argument, 0, 'h'}, | |
681 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 682 | {"repair", required_argument, 0, 'r'}, |
8599ea4c | 683 | {"output", required_argument, 0, OPTION_OUTPUT}, |
3babeb15 | 684 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 685 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 686 | {"force-share", no_argument, 0, 'U'}, |
8599ea4c FS |
687 | {0, 0, 0, 0} |
688 | }; | |
335e9937 | 689 | c = getopt_long(argc, argv, ":hf:r:T:qU", |
8599ea4c | 690 | long_options, &option_index); |
b8fb60da | 691 | if (c == -1) { |
1585969c | 692 | break; |
b8fb60da | 693 | } |
1585969c | 694 | switch(c) { |
c9192973 SH |
695 | case ':': |
696 | missing_argument(argv[optind - 1]); | |
697 | break; | |
ef87394c | 698 | case '?': |
c9192973 SH |
699 | unrecognized_option(argv[optind - 1]); |
700 | break; | |
1585969c AL |
701 | case 'h': |
702 | help(); | |
703 | break; | |
704 | case 'f': | |
705 | fmt = optarg; | |
706 | break; | |
4534ff54 KW |
707 | case 'r': |
708 | flags |= BDRV_O_RDWR; | |
709 | ||
710 | if (!strcmp(optarg, "leaks")) { | |
711 | fix = BDRV_FIX_LEAKS; | |
712 | } else if (!strcmp(optarg, "all")) { | |
713 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
714 | } else { | |
ac1307ab FZ |
715 | error_exit("Unknown option value for -r " |
716 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
717 | } |
718 | break; | |
8599ea4c FS |
719 | case OPTION_OUTPUT: |
720 | output = optarg; | |
721 | break; | |
40055951 HR |
722 | case 'T': |
723 | cache = optarg; | |
724 | break; | |
f382d43a MR |
725 | case 'q': |
726 | quiet = true; | |
727 | break; | |
335e9937 FZ |
728 | case 'U': |
729 | force_share = true; | |
730 | break; | |
3babeb15 DB |
731 | case OPTION_OBJECT: { |
732 | QemuOpts *opts; | |
733 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
734 | optarg, true); | |
735 | if (!opts) { | |
736 | return 1; | |
737 | } | |
738 | } break; | |
eb769f74 DB |
739 | case OPTION_IMAGE_OPTS: |
740 | image_opts = true; | |
741 | break; | |
1585969c AL |
742 | } |
743 | } | |
fc11eb26 | 744 | if (optind != argc - 1) { |
ac1307ab | 745 | error_exit("Expecting one image file name"); |
b8fb60da | 746 | } |
1585969c AL |
747 | filename = argv[optind++]; |
748 | ||
8599ea4c FS |
749 | if (output && !strcmp(output, "json")) { |
750 | output_format = OFORMAT_JSON; | |
751 | } else if (output && !strcmp(output, "human")) { | |
752 | output_format = OFORMAT_HUMAN; | |
753 | } else if (output) { | |
754 | error_report("--output must be used with human or json as argument."); | |
755 | return 1; | |
756 | } | |
757 | ||
3babeb15 DB |
758 | if (qemu_opts_foreach(&qemu_object_opts, |
759 | user_creatable_add_opts_foreach, | |
51b9b478 | 760 | NULL, NULL)) { |
3babeb15 DB |
761 | return 1; |
762 | } | |
763 | ||
ce099547 | 764 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
40055951 HR |
765 | if (ret < 0) { |
766 | error_report("Invalid source cache option: %s", cache); | |
767 | return 1; | |
768 | } | |
769 | ||
335e9937 FZ |
770 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
771 | force_share); | |
7e7d56d9 MA |
772 | if (!blk) { |
773 | return 1; | |
c2abccec | 774 | } |
7e7d56d9 | 775 | bs = blk_bs(blk); |
8599ea4c FS |
776 | |
777 | check = g_new0(ImageCheck, 1); | |
778 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
779 | |
780 | if (ret == -ENOTSUP) { | |
55d492d7 | 781 | error_report("This image format does not support checks"); |
fefddf95 | 782 | ret = 63; |
8599ea4c | 783 | goto fail; |
e076f338 KW |
784 | } |
785 | ||
8599ea4c FS |
786 | if (check->corruptions_fixed || check->leaks_fixed) { |
787 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 788 | |
8599ea4c FS |
789 | leaks_fixed = check->leaks_fixed; |
790 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 791 | |
8599ea4c | 792 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
793 | qprintf(quiet, |
794 | "The following inconsistencies were found and repaired:\n\n" | |
795 | " %" PRId64 " leaked clusters\n" | |
796 | " %" PRId64 " corruptions\n\n" | |
797 | "Double checking the fixed image now...\n", | |
798 | check->leaks_fixed, | |
799 | check->corruptions_fixed); | |
e076f338 KW |
800 | } |
801 | ||
8599ea4c | 802 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 803 | |
8599ea4c FS |
804 | check->leaks_fixed = leaks_fixed; |
805 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
806 | } |
807 | ||
832390a5 HR |
808 | if (!ret) { |
809 | switch (output_format) { | |
810 | case OFORMAT_HUMAN: | |
811 | dump_human_image_check(check, quiet); | |
812 | break; | |
813 | case OFORMAT_JSON: | |
814 | dump_json_image_check(check, quiet); | |
815 | break; | |
816 | } | |
c6bb9ad1 FS |
817 | } |
818 | ||
8599ea4c | 819 | if (ret || check->check_errors) { |
832390a5 HR |
820 | if (ret) { |
821 | error_report("Check failed: %s", strerror(-ret)); | |
822 | } else { | |
823 | error_report("Check failed"); | |
824 | } | |
8599ea4c FS |
825 | ret = 1; |
826 | goto fail; | |
c2abccec | 827 | } |
e076f338 | 828 | |
8599ea4c FS |
829 | if (check->corruptions) { |
830 | ret = 2; | |
831 | } else if (check->leaks) { | |
832 | ret = 3; | |
e076f338 | 833 | } else { |
8599ea4c | 834 | ret = 0; |
e076f338 | 835 | } |
8599ea4c FS |
836 | |
837 | fail: | |
838 | qapi_free_ImageCheck(check); | |
26f54e9a | 839 | blk_unref(blk); |
8599ea4c | 840 | return ret; |
1585969c AL |
841 | } |
842 | ||
d4a3238a HR |
843 | typedef struct CommonBlockJobCBInfo { |
844 | BlockDriverState *bs; | |
845 | Error **errp; | |
846 | } CommonBlockJobCBInfo; | |
847 | ||
848 | static void common_block_job_cb(void *opaque, int ret) | |
849 | { | |
850 | CommonBlockJobCBInfo *cbi = opaque; | |
851 | ||
852 | if (ret < 0) { | |
853 | error_setg_errno(cbi->errp, -ret, "Block job failed"); | |
854 | } | |
d4a3238a HR |
855 | } |
856 | ||
857 | static void run_block_job(BlockJob *job, Error **errp) | |
858 | { | |
b75536c9 | 859 | AioContext *aio_context = blk_get_aio_context(job->blk); |
4172a003 | 860 | int ret = 0; |
d4a3238a | 861 | |
9e944cb4 | 862 | aio_context_acquire(aio_context); |
4172a003 | 863 | block_job_ref(job); |
d4a3238a HR |
864 | do { |
865 | aio_poll(aio_context, true); | |
62547b8a JS |
866 | qemu_progress_print(job->len ? |
867 | ((float)job->offset / job->len * 100.f) : 0.0f, 0); | |
4172a003 | 868 | } while (!job->ready && !job->completed); |
d4a3238a | 869 | |
4172a003 SJ |
870 | if (!job->completed) { |
871 | ret = block_job_complete_sync(job, errp); | |
872 | } else { | |
873 | ret = job->ret; | |
874 | } | |
875 | block_job_unref(job); | |
9e944cb4 | 876 | aio_context_release(aio_context); |
687fa1d8 | 877 | |
4172a003 SJ |
878 | /* publish completion progress only when success */ |
879 | if (!ret) { | |
880 | qemu_progress_print(100.f, 0); | |
881 | } | |
d4a3238a HR |
882 | } |
883 | ||
ea2384d3 FB |
884 | static int img_commit(int argc, char **argv) |
885 | { | |
661a0f71 | 886 | int c, ret, flags; |
1b22bffd | 887 | const char *filename, *fmt, *cache, *base; |
26f54e9a | 888 | BlockBackend *blk; |
d4a3238a | 889 | BlockDriverState *bs, *base_bs; |
4ef85a9c | 890 | BlockJob *job; |
687fa1d8 | 891 | bool progress = false, quiet = false, drop = false; |
ce099547 | 892 | bool writethrough; |
d4a3238a HR |
893 | Error *local_err = NULL; |
894 | CommonBlockJobCBInfo cbi; | |
eb769f74 | 895 | bool image_opts = false; |
9e944cb4 | 896 | AioContext *aio_context; |
ea2384d3 FB |
897 | |
898 | fmt = NULL; | |
661a0f71 | 899 | cache = BDRV_DEFAULT_CACHE; |
1b22bffd | 900 | base = NULL; |
ea2384d3 | 901 | for(;;) { |
3babeb15 DB |
902 | static const struct option long_options[] = { |
903 | {"help", no_argument, 0, 'h'}, | |
904 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 905 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
906 | {0, 0, 0, 0} |
907 | }; | |
c9192973 | 908 | c = getopt_long(argc, argv, ":f:ht:b:dpq", |
3babeb15 | 909 | long_options, NULL); |
b8fb60da | 910 | if (c == -1) { |
ea2384d3 | 911 | break; |
b8fb60da | 912 | } |
ea2384d3 | 913 | switch(c) { |
c9192973 SH |
914 | case ':': |
915 | missing_argument(argv[optind - 1]); | |
916 | break; | |
ef87394c | 917 | case '?': |
c9192973 SH |
918 | unrecognized_option(argv[optind - 1]); |
919 | break; | |
ea2384d3 FB |
920 | case 'h': |
921 | help(); | |
922 | break; | |
923 | case 'f': | |
924 | fmt = optarg; | |
925 | break; | |
661a0f71 FS |
926 | case 't': |
927 | cache = optarg; | |
928 | break; | |
1b22bffd HR |
929 | case 'b': |
930 | base = optarg; | |
931 | /* -b implies -d */ | |
932 | drop = true; | |
933 | break; | |
9a86fe48 HR |
934 | case 'd': |
935 | drop = true; | |
936 | break; | |
687fa1d8 HR |
937 | case 'p': |
938 | progress = true; | |
939 | break; | |
f382d43a MR |
940 | case 'q': |
941 | quiet = true; | |
942 | break; | |
3babeb15 DB |
943 | case OPTION_OBJECT: { |
944 | QemuOpts *opts; | |
945 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
946 | optarg, true); | |
947 | if (!opts) { | |
948 | return 1; | |
949 | } | |
950 | } break; | |
eb769f74 DB |
951 | case OPTION_IMAGE_OPTS: |
952 | image_opts = true; | |
953 | break; | |
ea2384d3 FB |
954 | } |
955 | } | |
687fa1d8 HR |
956 | |
957 | /* Progress is not shown in Quiet mode */ | |
958 | if (quiet) { | |
959 | progress = false; | |
960 | } | |
961 | ||
fc11eb26 | 962 | if (optind != argc - 1) { |
ac1307ab | 963 | error_exit("Expecting one image file name"); |
b8fb60da | 964 | } |
ea2384d3 FB |
965 | filename = argv[optind++]; |
966 | ||
3babeb15 DB |
967 | if (qemu_opts_foreach(&qemu_object_opts, |
968 | user_creatable_add_opts_foreach, | |
51b9b478 | 969 | NULL, NULL)) { |
3babeb15 DB |
970 | return 1; |
971 | } | |
972 | ||
9a86fe48 | 973 | flags = BDRV_O_RDWR | BDRV_O_UNMAP; |
ce099547 | 974 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
975 | if (ret < 0) { |
976 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 977 | return 1; |
661a0f71 FS |
978 | } |
979 | ||
335e9937 FZ |
980 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
981 | false); | |
7e7d56d9 MA |
982 | if (!blk) { |
983 | return 1; | |
c2abccec | 984 | } |
7e7d56d9 MA |
985 | bs = blk_bs(blk); |
986 | ||
687fa1d8 HR |
987 | qemu_progress_init(progress, 1.f); |
988 | qemu_progress_print(0.f, 100); | |
989 | ||
1b22bffd HR |
990 | if (base) { |
991 | base_bs = bdrv_find_backing_image(bs, base); | |
992 | if (!base_bs) { | |
6b33f3ae HR |
993 | error_setg(&local_err, |
994 | "Did not find '%s' in the backing chain of '%s'", | |
995 | base, filename); | |
1b22bffd HR |
996 | goto done; |
997 | } | |
998 | } else { | |
999 | /* This is different from QMP, which by default uses the deepest file in | |
1000 | * the backing chain (i.e., the very base); however, the traditional | |
1001 | * behavior of qemu-img commit is using the immediate backing file. */ | |
760e0063 | 1002 | base_bs = backing_bs(bs); |
1b22bffd HR |
1003 | if (!base_bs) { |
1004 | error_setg(&local_err, "Image does not have a backing file"); | |
1005 | goto done; | |
1006 | } | |
d4a3238a HR |
1007 | } |
1008 | ||
1009 | cbi = (CommonBlockJobCBInfo){ | |
1010 | .errp = &local_err, | |
1011 | .bs = bs, | |
1012 | }; | |
1013 | ||
9e944cb4 PB |
1014 | aio_context = bdrv_get_aio_context(bs); |
1015 | aio_context_acquire(aio_context); | |
47970dfb | 1016 | commit_active_start("commit", bs, base_bs, BLOCK_JOB_DEFAULT, 0, |
0db832f4 | 1017 | BLOCKDEV_ON_ERROR_REPORT, NULL, common_block_job_cb, |
78bbd910 | 1018 | &cbi, false, &local_err); |
9e944cb4 | 1019 | aio_context_release(aio_context); |
d4a3238a HR |
1020 | if (local_err) { |
1021 | goto done; | |
ea2384d3 FB |
1022 | } |
1023 | ||
3f09bfbc KW |
1024 | /* When the block job completes, the BlockBackend reference will point to |
1025 | * the old backing file. In order to avoid that the top image is already | |
1026 | * deleted, so we can still empty it afterwards, increment the reference | |
1027 | * counter here preemptively. */ | |
9a86fe48 | 1028 | if (!drop) { |
3f09bfbc | 1029 | bdrv_ref(bs); |
9a86fe48 HR |
1030 | } |
1031 | ||
4ef85a9c KW |
1032 | job = block_job_get("commit"); |
1033 | run_block_job(job, &local_err); | |
9a86fe48 HR |
1034 | if (local_err) { |
1035 | goto unref_backing; | |
1036 | } | |
1037 | ||
3f09bfbc KW |
1038 | if (!drop && bs->drv->bdrv_make_empty) { |
1039 | ret = bs->drv->bdrv_make_empty(bs); | |
9a86fe48 HR |
1040 | if (ret) { |
1041 | error_setg_errno(&local_err, -ret, "Could not empty %s", | |
1042 | filename); | |
1043 | goto unref_backing; | |
1044 | } | |
1045 | } | |
1046 | ||
1047 | unref_backing: | |
1048 | if (!drop) { | |
3f09bfbc | 1049 | bdrv_unref(bs); |
9a86fe48 | 1050 | } |
d4a3238a HR |
1051 | |
1052 | done: | |
687fa1d8 HR |
1053 | qemu_progress_end(); |
1054 | ||
26f54e9a | 1055 | blk_unref(blk); |
d4a3238a HR |
1056 | |
1057 | if (local_err) { | |
6936f299 | 1058 | error_report_err(local_err); |
c2abccec MK |
1059 | return 1; |
1060 | } | |
d4a3238a HR |
1061 | |
1062 | qprintf(quiet, "Image committed.\n"); | |
ea2384d3 FB |
1063 | return 0; |
1064 | } | |
1065 | ||
debb38a4 EB |
1066 | /* |
1067 | * Returns -1 if 'buf' contains only zeroes, otherwise the byte index | |
1068 | * of the first sector boundary within buf where the sector contains a | |
1069 | * non-zero byte. This function is robust to a buffer that is not | |
1070 | * sector-aligned. | |
1071 | */ | |
1072 | static int64_t find_nonzero(const uint8_t *buf, int64_t n) | |
1073 | { | |
1074 | int64_t i; | |
1075 | int64_t end = QEMU_ALIGN_DOWN(n, BDRV_SECTOR_SIZE); | |
1076 | ||
1077 | for (i = 0; i < end; i += BDRV_SECTOR_SIZE) { | |
1078 | if (!buffer_is_zero(buf + i, BDRV_SECTOR_SIZE)) { | |
1079 | return i; | |
1080 | } | |
1081 | } | |
1082 | if (i < n && !buffer_is_zero(buf + i, n - end)) { | |
1083 | return i; | |
1084 | } | |
1085 | return -1; | |
1086 | } | |
1087 | ||
f58c7b35 TS |
1088 | /* |
1089 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
1090 | * a non-NUL byte. | |
1091 | * | |
1092 | * 'pnum' is set to the number of sectors (including and immediately following | |
1093 | * the first one) that are known to be in the same allocated/unallocated state. | |
1094 | */ | |
ea2384d3 FB |
1095 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
1096 | { | |
1a6d39fd SH |
1097 | bool is_zero; |
1098 | int i; | |
ea2384d3 FB |
1099 | |
1100 | if (n <= 0) { | |
1101 | *pnum = 0; | |
1102 | return 0; | |
1103 | } | |
1a6d39fd | 1104 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
1105 | for(i = 1; i < n; i++) { |
1106 | buf += 512; | |
1a6d39fd | 1107 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 1108 | break; |
1a6d39fd | 1109 | } |
ea2384d3 FB |
1110 | } |
1111 | *pnum = i; | |
1a6d39fd | 1112 | return !is_zero; |
ea2384d3 FB |
1113 | } |
1114 | ||
a22f123c KW |
1115 | /* |
1116 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
1117 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
1118 | * breaking up write requests for only small sparse areas. | |
1119 | */ | |
1120 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
1121 | int min) | |
1122 | { | |
1123 | int ret; | |
1124 | int num_checked, num_used; | |
1125 | ||
1126 | if (n < min) { | |
1127 | min = n; | |
1128 | } | |
1129 | ||
1130 | ret = is_allocated_sectors(buf, n, pnum); | |
1131 | if (!ret) { | |
1132 | return ret; | |
1133 | } | |
1134 | ||
1135 | num_used = *pnum; | |
1136 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1137 | n -= *pnum; | |
1138 | num_checked = num_used; | |
1139 | ||
1140 | while (n > 0) { | |
1141 | ret = is_allocated_sectors(buf, n, pnum); | |
1142 | ||
1143 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1144 | n -= *pnum; | |
1145 | num_checked += *pnum; | |
1146 | if (ret) { | |
1147 | num_used = num_checked; | |
1148 | } else if (*pnum >= min) { | |
1149 | break; | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | *pnum = num_used; | |
1154 | return 1; | |
1155 | } | |
1156 | ||
3e85c6fd | 1157 | /* |
dc61cd3b EB |
1158 | * Compares two buffers sector by sector. Returns 0 if the first |
1159 | * sector of each buffer matches, non-zero otherwise. | |
3e85c6fd | 1160 | * |
dc61cd3b EB |
1161 | * pnum is set to the sector-aligned size of the buffer prefix that |
1162 | * has the same matching status as the first sector. | |
3e85c6fd | 1163 | */ |
dc61cd3b EB |
1164 | static int compare_buffers(const uint8_t *buf1, const uint8_t *buf2, |
1165 | int64_t bytes, int64_t *pnum) | |
3e85c6fd | 1166 | { |
8c1ac475 | 1167 | bool res; |
dc61cd3b | 1168 | int64_t i = MIN(bytes, BDRV_SECTOR_SIZE); |
3e85c6fd | 1169 | |
dc61cd3b | 1170 | assert(bytes > 0); |
3e85c6fd | 1171 | |
dc61cd3b EB |
1172 | res = !!memcmp(buf1, buf2, i); |
1173 | while (i < bytes) { | |
1174 | int64_t len = MIN(bytes - i, BDRV_SECTOR_SIZE); | |
3e85c6fd | 1175 | |
dc61cd3b | 1176 | if (!!memcmp(buf1 + i, buf2 + i, len) != res) { |
3e85c6fd KW |
1177 | break; |
1178 | } | |
dc61cd3b | 1179 | i += len; |
3e85c6fd KW |
1180 | } |
1181 | ||
1182 | *pnum = i; | |
1183 | return res; | |
1184 | } | |
1185 | ||
80ee15a6 | 1186 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 1187 | |
d14ed18c MR |
1188 | /* |
1189 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
1190 | * | |
0608e40e EB |
1191 | * Intended for use by 'qemu-img compare': Returns 0 in case sectors are |
1192 | * filled with 0, 1 if sectors contain non-zero data (this is a comparison | |
1193 | * failure), and 4 on error (the exit status for read errors), after emitting | |
1194 | * an error message. | |
d14ed18c | 1195 | * |
f1d3cd79 | 1196 | * @param blk: BlockBackend for the image |
c41508ed EB |
1197 | * @param offset: Starting offset to check |
1198 | * @param bytes: Number of bytes to check | |
d14ed18c MR |
1199 | * @param filename: Name of disk file we are checking (logging purpose) |
1200 | * @param buffer: Allocated buffer for storing read data | |
1201 | * @param quiet: Flag for quiet mode | |
1202 | */ | |
c41508ed EB |
1203 | static int check_empty_sectors(BlockBackend *blk, int64_t offset, |
1204 | int64_t bytes, const char *filename, | |
d14ed18c MR |
1205 | uint8_t *buffer, bool quiet) |
1206 | { | |
debb38a4 EB |
1207 | int ret = 0; |
1208 | int64_t idx; | |
1209 | ||
c41508ed | 1210 | ret = blk_pread(blk, offset, buffer, bytes); |
d14ed18c MR |
1211 | if (ret < 0) { |
1212 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
c41508ed | 1213 | offset, filename, strerror(-ret)); |
0608e40e | 1214 | return 4; |
d14ed18c | 1215 | } |
c41508ed | 1216 | idx = find_nonzero(buffer, bytes); |
debb38a4 | 1217 | if (idx >= 0) { |
d14ed18c | 1218 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
c41508ed | 1219 | offset + idx); |
d14ed18c MR |
1220 | return 1; |
1221 | } | |
1222 | ||
1223 | return 0; | |
1224 | } | |
1225 | ||
1226 | /* | |
1227 | * Compares two images. Exit codes: | |
1228 | * | |
1229 | * 0 - Images are identical | |
1230 | * 1 - Images differ | |
1231 | * >1 - Error occurred | |
1232 | */ | |
1233 | static int img_compare(int argc, char **argv) | |
1234 | { | |
40055951 | 1235 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 1236 | BlockBackend *blk1, *blk2; |
d14ed18c | 1237 | BlockDriverState *bs1, *bs2; |
033d9fc2 | 1238 | int64_t total_size1, total_size2; |
d14ed18c | 1239 | uint8_t *buf1 = NULL, *buf2 = NULL; |
31826642 | 1240 | int64_t pnum1, pnum2; |
d14ed18c MR |
1241 | int allocated1, allocated2; |
1242 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
1243 | bool progress = false, quiet = false, strict = false; | |
40055951 | 1244 | int flags; |
ce099547 | 1245 | bool writethrough; |
033d9fc2 EB |
1246 | int64_t total_size; |
1247 | int64_t offset = 0; | |
1248 | int64_t chunk; | |
dc61cd3b | 1249 | int c; |
d14ed18c | 1250 | uint64_t progress_base; |
eb769f74 | 1251 | bool image_opts = false; |
335e9937 | 1252 | bool force_share = false; |
d14ed18c | 1253 | |
40055951 | 1254 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 1255 | for (;;) { |
3babeb15 DB |
1256 | static const struct option long_options[] = { |
1257 | {"help", no_argument, 0, 'h'}, | |
1258 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1259 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 1260 | {"force-share", no_argument, 0, 'U'}, |
3babeb15 DB |
1261 | {0, 0, 0, 0} |
1262 | }; | |
335e9937 | 1263 | c = getopt_long(argc, argv, ":hf:F:T:pqsU", |
3babeb15 | 1264 | long_options, NULL); |
d14ed18c MR |
1265 | if (c == -1) { |
1266 | break; | |
1267 | } | |
1268 | switch (c) { | |
c9192973 SH |
1269 | case ':': |
1270 | missing_argument(argv[optind - 1]); | |
1271 | break; | |
d14ed18c | 1272 | case '?': |
c9192973 SH |
1273 | unrecognized_option(argv[optind - 1]); |
1274 | break; | |
d14ed18c MR |
1275 | case 'h': |
1276 | help(); | |
1277 | break; | |
1278 | case 'f': | |
1279 | fmt1 = optarg; | |
1280 | break; | |
1281 | case 'F': | |
1282 | fmt2 = optarg; | |
1283 | break; | |
40055951 HR |
1284 | case 'T': |
1285 | cache = optarg; | |
1286 | break; | |
d14ed18c MR |
1287 | case 'p': |
1288 | progress = true; | |
1289 | break; | |
1290 | case 'q': | |
1291 | quiet = true; | |
1292 | break; | |
1293 | case 's': | |
1294 | strict = true; | |
1295 | break; | |
335e9937 FZ |
1296 | case 'U': |
1297 | force_share = true; | |
1298 | break; | |
3babeb15 DB |
1299 | case OPTION_OBJECT: { |
1300 | QemuOpts *opts; | |
1301 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1302 | optarg, true); | |
1303 | if (!opts) { | |
1304 | ret = 2; | |
1305 | goto out4; | |
1306 | } | |
1307 | } break; | |
eb769f74 DB |
1308 | case OPTION_IMAGE_OPTS: |
1309 | image_opts = true; | |
1310 | break; | |
d14ed18c MR |
1311 | } |
1312 | } | |
1313 | ||
1314 | /* Progress is not shown in Quiet mode */ | |
1315 | if (quiet) { | |
1316 | progress = false; | |
1317 | } | |
1318 | ||
1319 | ||
fc11eb26 | 1320 | if (optind != argc - 2) { |
ac1307ab | 1321 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1322 | } |
1323 | filename1 = argv[optind++]; | |
1324 | filename2 = argv[optind++]; | |
1325 | ||
3babeb15 DB |
1326 | if (qemu_opts_foreach(&qemu_object_opts, |
1327 | user_creatable_add_opts_foreach, | |
51b9b478 | 1328 | NULL, NULL)) { |
3babeb15 DB |
1329 | ret = 2; |
1330 | goto out4; | |
1331 | } | |
1332 | ||
cbda016d SH |
1333 | /* Initialize before goto out */ |
1334 | qemu_progress_init(progress, 2.0); | |
1335 | ||
ce099547 KW |
1336 | flags = 0; |
1337 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
40055951 HR |
1338 | if (ret < 0) { |
1339 | error_report("Invalid source cache option: %s", cache); | |
1340 | ret = 2; | |
1341 | goto out3; | |
1342 | } | |
1343 | ||
335e9937 FZ |
1344 | blk1 = img_open(image_opts, filename1, fmt1, flags, writethrough, quiet, |
1345 | force_share); | |
7e7d56d9 | 1346 | if (!blk1) { |
d14ed18c | 1347 | ret = 2; |
7e7d56d9 | 1348 | goto out3; |
d14ed18c MR |
1349 | } |
1350 | ||
335e9937 FZ |
1351 | blk2 = img_open(image_opts, filename2, fmt2, flags, writethrough, quiet, |
1352 | force_share); | |
7e7d56d9 | 1353 | if (!blk2) { |
d14ed18c | 1354 | ret = 2; |
7e7d56d9 | 1355 | goto out2; |
d14ed18c | 1356 | } |
eb769f74 | 1357 | bs1 = blk_bs(blk1); |
7e7d56d9 | 1358 | bs2 = blk_bs(blk2); |
d14ed18c | 1359 | |
f1d3cd79 HR |
1360 | buf1 = blk_blockalign(blk1, IO_BUF_SIZE); |
1361 | buf2 = blk_blockalign(blk2, IO_BUF_SIZE); | |
033d9fc2 EB |
1362 | total_size1 = blk_getlength(blk1); |
1363 | if (total_size1 < 0) { | |
52bf1e72 | 1364 | error_report("Can't get size of %s: %s", |
033d9fc2 | 1365 | filename1, strerror(-total_size1)); |
52bf1e72 MA |
1366 | ret = 4; |
1367 | goto out; | |
1368 | } | |
033d9fc2 EB |
1369 | total_size2 = blk_getlength(blk2); |
1370 | if (total_size2 < 0) { | |
52bf1e72 | 1371 | error_report("Can't get size of %s: %s", |
033d9fc2 | 1372 | filename2, strerror(-total_size2)); |
52bf1e72 MA |
1373 | ret = 4; |
1374 | goto out; | |
1375 | } | |
033d9fc2 EB |
1376 | total_size = MIN(total_size1, total_size2); |
1377 | progress_base = MAX(total_size1, total_size2); | |
d14ed18c MR |
1378 | |
1379 | qemu_progress_print(0, 100); | |
1380 | ||
033d9fc2 | 1381 | if (strict && total_size1 != total_size2) { |
d14ed18c MR |
1382 | ret = 1; |
1383 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1384 | goto out; | |
1385 | } | |
1386 | ||
033d9fc2 | 1387 | while (offset < total_size) { |
31826642 | 1388 | int status1, status2; |
67a0fd2a | 1389 | |
033d9fc2 EB |
1390 | status1 = bdrv_block_status_above(bs1, NULL, offset, |
1391 | total_size1 - offset, &pnum1, NULL, | |
1392 | NULL); | |
25ad8e6e | 1393 | if (status1 < 0) { |
d14ed18c MR |
1394 | ret = 3; |
1395 | error_report("Sector allocation test failed for %s", filename1); | |
1396 | goto out; | |
1397 | } | |
25ad8e6e | 1398 | allocated1 = status1 & BDRV_BLOCK_ALLOCATED; |
d14ed18c | 1399 | |
033d9fc2 EB |
1400 | status2 = bdrv_block_status_above(bs2, NULL, offset, |
1401 | total_size2 - offset, &pnum2, NULL, | |
1402 | NULL); | |
25ad8e6e | 1403 | if (status2 < 0) { |
d14ed18c MR |
1404 | ret = 3; |
1405 | error_report("Sector allocation test failed for %s", filename2); | |
1406 | goto out; | |
1407 | } | |
25ad8e6e | 1408 | allocated2 = status2 & BDRV_BLOCK_ALLOCATED; |
7daddc61 EB |
1409 | |
1410 | assert(pnum1 && pnum2); | |
033d9fc2 | 1411 | chunk = MIN(pnum1, pnum2); |
d14ed18c | 1412 | |
25ad8e6e | 1413 | if (strict) { |
31826642 | 1414 | if (status1 != status2) { |
25ad8e6e FZ |
1415 | ret = 1; |
1416 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
033d9fc2 | 1417 | " block status mismatch!\n", offset); |
25ad8e6e FZ |
1418 | goto out; |
1419 | } | |
1420 | } | |
1421 | if ((status1 & BDRV_BLOCK_ZERO) && (status2 & BDRV_BLOCK_ZERO)) { | |
7daddc61 | 1422 | /* nothing to do */ |
25ad8e6e | 1423 | } else if (allocated1 == allocated2) { |
d14ed18c | 1424 | if (allocated1) { |
dc61cd3b EB |
1425 | int64_t pnum; |
1426 | ||
033d9fc2 EB |
1427 | chunk = MIN(chunk, IO_BUF_SIZE); |
1428 | ret = blk_pread(blk1, offset, buf1, chunk); | |
d14ed18c | 1429 | if (ret < 0) { |
033d9fc2 EB |
1430 | error_report("Error while reading offset %" PRId64 |
1431 | " of %s: %s", | |
1432 | offset, filename1, strerror(-ret)); | |
d14ed18c MR |
1433 | ret = 4; |
1434 | goto out; | |
1435 | } | |
033d9fc2 | 1436 | ret = blk_pread(blk2, offset, buf2, chunk); |
d14ed18c MR |
1437 | if (ret < 0) { |
1438 | error_report("Error while reading offset %" PRId64 | |
033d9fc2 EB |
1439 | " of %s: %s", |
1440 | offset, filename2, strerror(-ret)); | |
d14ed18c MR |
1441 | ret = 4; |
1442 | goto out; | |
1443 | } | |
033d9fc2 EB |
1444 | ret = compare_buffers(buf1, buf2, chunk, &pnum); |
1445 | if (ret || pnum != chunk) { | |
d14ed18c | 1446 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
033d9fc2 | 1447 | offset + (ret ? 0 : pnum)); |
36452f12 | 1448 | ret = 1; |
d14ed18c MR |
1449 | goto out; |
1450 | } | |
1451 | } | |
1452 | } else { | |
033d9fc2 | 1453 | chunk = MIN(chunk, IO_BUF_SIZE); |
d14ed18c | 1454 | if (allocated1) { |
033d9fc2 | 1455 | ret = check_empty_sectors(blk1, offset, chunk, |
d14ed18c MR |
1456 | filename1, buf1, quiet); |
1457 | } else { | |
033d9fc2 | 1458 | ret = check_empty_sectors(blk2, offset, chunk, |
d14ed18c MR |
1459 | filename2, buf1, quiet); |
1460 | } | |
1461 | if (ret) { | |
d14ed18c MR |
1462 | goto out; |
1463 | } | |
1464 | } | |
033d9fc2 EB |
1465 | offset += chunk; |
1466 | qemu_progress_print(((float) chunk / progress_base) * 100, 100); | |
d14ed18c MR |
1467 | } |
1468 | ||
033d9fc2 | 1469 | if (total_size1 != total_size2) { |
f1d3cd79 | 1470 | BlockBackend *blk_over; |
d14ed18c MR |
1471 | const char *filename_over; |
1472 | ||
1473 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
033d9fc2 | 1474 | if (total_size1 > total_size2) { |
f1d3cd79 | 1475 | blk_over = blk1; |
d14ed18c MR |
1476 | filename_over = filename1; |
1477 | } else { | |
f1d3cd79 | 1478 | blk_over = blk2; |
d14ed18c MR |
1479 | filename_over = filename2; |
1480 | } | |
1481 | ||
033d9fc2 EB |
1482 | while (offset < progress_base) { |
1483 | ret = bdrv_block_status_above(blk_bs(blk_over), NULL, offset, | |
1484 | progress_base - offset, &chunk, | |
1485 | NULL, NULL); | |
d14ed18c MR |
1486 | if (ret < 0) { |
1487 | ret = 3; | |
1488 | error_report("Sector allocation test failed for %s", | |
1489 | filename_over); | |
1490 | goto out; | |
1491 | ||
1492 | } | |
391cb1aa | 1493 | if (ret & BDRV_BLOCK_ALLOCATED && !(ret & BDRV_BLOCK_ZERO)) { |
033d9fc2 EB |
1494 | chunk = MIN(chunk, IO_BUF_SIZE); |
1495 | ret = check_empty_sectors(blk_over, offset, chunk, | |
d14ed18c MR |
1496 | filename_over, buf1, quiet); |
1497 | if (ret) { | |
d14ed18c MR |
1498 | goto out; |
1499 | } | |
1500 | } | |
033d9fc2 EB |
1501 | offset += chunk; |
1502 | qemu_progress_print(((float) chunk / progress_base) * 100, 100); | |
d14ed18c MR |
1503 | } |
1504 | } | |
1505 | ||
1506 | qprintf(quiet, "Images are identical.\n"); | |
1507 | ret = 0; | |
1508 | ||
1509 | out: | |
d14ed18c MR |
1510 | qemu_vfree(buf1); |
1511 | qemu_vfree(buf2); | |
26f54e9a | 1512 | blk_unref(blk2); |
d14ed18c | 1513 | out2: |
26f54e9a | 1514 | blk_unref(blk1); |
d14ed18c MR |
1515 | out3: |
1516 | qemu_progress_end(); | |
3babeb15 | 1517 | out4: |
d14ed18c MR |
1518 | return ret; |
1519 | } | |
1520 | ||
690c7301 KW |
1521 | enum ImgConvertBlockStatus { |
1522 | BLK_DATA, | |
1523 | BLK_ZERO, | |
1524 | BLK_BACKING_FILE, | |
1525 | }; | |
1526 | ||
2d9187bc PL |
1527 | #define MAX_COROUTINES 16 |
1528 | ||
690c7301 KW |
1529 | typedef struct ImgConvertState { |
1530 | BlockBackend **src; | |
1531 | int64_t *src_sectors; | |
2d9187bc | 1532 | int src_num; |
690c7301 KW |
1533 | int64_t total_sectors; |
1534 | int64_t allocated_sectors; | |
2d9187bc PL |
1535 | int64_t allocated_done; |
1536 | int64_t sector_num; | |
1537 | int64_t wr_offs; | |
690c7301 KW |
1538 | enum ImgConvertBlockStatus status; |
1539 | int64_t sector_next_status; | |
1540 | BlockBackend *target; | |
1541 | bool has_zero_init; | |
1542 | bool compressed; | |
1543 | bool target_has_backing; | |
2d9187bc | 1544 | bool wr_in_order; |
690c7301 KW |
1545 | int min_sparse; |
1546 | size_t cluster_sectors; | |
1547 | size_t buf_sectors; | |
9fd77f99 | 1548 | long num_coroutines; |
2d9187bc PL |
1549 | int running_coroutines; |
1550 | Coroutine *co[MAX_COROUTINES]; | |
1551 | int64_t wait_sector_num[MAX_COROUTINES]; | |
1552 | CoMutex lock; | |
1553 | int ret; | |
690c7301 KW |
1554 | } ImgConvertState; |
1555 | ||
2d9187bc PL |
1556 | static void convert_select_part(ImgConvertState *s, int64_t sector_num, |
1557 | int *src_cur, int64_t *src_cur_offset) | |
690c7301 | 1558 | { |
2d9187bc PL |
1559 | *src_cur = 0; |
1560 | *src_cur_offset = 0; | |
1561 | while (sector_num - *src_cur_offset >= s->src_sectors[*src_cur]) { | |
1562 | *src_cur_offset += s->src_sectors[*src_cur]; | |
1563 | (*src_cur)++; | |
1564 | assert(*src_cur < s->src_num); | |
690c7301 KW |
1565 | } |
1566 | } | |
1567 | ||
1568 | static int convert_iteration_sectors(ImgConvertState *s, int64_t sector_num) | |
1569 | { | |
31826642 EB |
1570 | int64_t src_cur_offset; |
1571 | int ret, n, src_cur; | |
690c7301 | 1572 | |
2d9187bc | 1573 | convert_select_part(s, sector_num, &src_cur, &src_cur_offset); |
690c7301 KW |
1574 | |
1575 | assert(s->total_sectors > sector_num); | |
1576 | n = MIN(s->total_sectors - sector_num, BDRV_REQUEST_MAX_SECTORS); | |
1577 | ||
1578 | if (s->sector_next_status <= sector_num) { | |
31826642 EB |
1579 | int64_t count = n * BDRV_SECTOR_SIZE; |
1580 | ||
9f1b92ad | 1581 | if (s->target_has_backing) { |
237d78f8 EB |
1582 | |
1583 | ret = bdrv_block_status(blk_bs(s->src[src_cur]), | |
1584 | (sector_num - src_cur_offset) * | |
1585 | BDRV_SECTOR_SIZE, | |
1586 | count, &count, NULL, NULL); | |
9f1b92ad | 1587 | } else { |
31826642 EB |
1588 | ret = bdrv_block_status_above(blk_bs(s->src[src_cur]), NULL, |
1589 | (sector_num - src_cur_offset) * | |
1590 | BDRV_SECTOR_SIZE, | |
1591 | count, &count, NULL, NULL); | |
9f1b92ad | 1592 | } |
690c7301 KW |
1593 | if (ret < 0) { |
1594 | return ret; | |
1595 | } | |
31826642 | 1596 | n = DIV_ROUND_UP(count, BDRV_SECTOR_SIZE); |
690c7301 KW |
1597 | |
1598 | if (ret & BDRV_BLOCK_ZERO) { | |
1599 | s->status = BLK_ZERO; | |
1600 | } else if (ret & BDRV_BLOCK_DATA) { | |
1601 | s->status = BLK_DATA; | |
690c7301 | 1602 | } else { |
9f1b92ad | 1603 | s->status = s->target_has_backing ? BLK_BACKING_FILE : BLK_DATA; |
690c7301 KW |
1604 | } |
1605 | ||
1606 | s->sector_next_status = sector_num + n; | |
1607 | } | |
1608 | ||
1609 | n = MIN(n, s->sector_next_status - sector_num); | |
1610 | if (s->status == BLK_DATA) { | |
1611 | n = MIN(n, s->buf_sectors); | |
1612 | } | |
1613 | ||
1614 | /* We need to write complete clusters for compressed images, so if an | |
1615 | * unallocated area is shorter than that, we must consider the whole | |
1616 | * cluster allocated. */ | |
1617 | if (s->compressed) { | |
1618 | if (n < s->cluster_sectors) { | |
1619 | n = MIN(s->cluster_sectors, s->total_sectors - sector_num); | |
1620 | s->status = BLK_DATA; | |
1621 | } else { | |
1622 | n = QEMU_ALIGN_DOWN(n, s->cluster_sectors); | |
1623 | } | |
1624 | } | |
1625 | ||
1626 | return n; | |
1627 | } | |
1628 | ||
2d9187bc PL |
1629 | static int coroutine_fn convert_co_read(ImgConvertState *s, int64_t sector_num, |
1630 | int nb_sectors, uint8_t *buf) | |
690c7301 | 1631 | { |
2d9187bc PL |
1632 | int n, ret; |
1633 | QEMUIOVector qiov; | |
1634 | struct iovec iov; | |
690c7301 | 1635 | |
690c7301 KW |
1636 | assert(nb_sectors <= s->buf_sectors); |
1637 | while (nb_sectors > 0) { | |
1638 | BlockBackend *blk; | |
2d9187bc PL |
1639 | int src_cur; |
1640 | int64_t bs_sectors, src_cur_offset; | |
690c7301 KW |
1641 | |
1642 | /* In the case of compression with multiple source files, we can get a | |
1643 | * nb_sectors that spreads into the next part. So we must be able to | |
1644 | * read across multiple BDSes for one convert_read() call. */ | |
2d9187bc PL |
1645 | convert_select_part(s, sector_num, &src_cur, &src_cur_offset); |
1646 | blk = s->src[src_cur]; | |
1647 | bs_sectors = s->src_sectors[src_cur]; | |
1648 | ||
1649 | n = MIN(nb_sectors, bs_sectors - (sector_num - src_cur_offset)); | |
1650 | iov.iov_base = buf; | |
1651 | iov.iov_len = n << BDRV_SECTOR_BITS; | |
1652 | qemu_iovec_init_external(&qiov, &iov, 1); | |
1653 | ||
1654 | ret = blk_co_preadv( | |
1655 | blk, (sector_num - src_cur_offset) << BDRV_SECTOR_BITS, | |
1656 | n << BDRV_SECTOR_BITS, &qiov, 0); | |
690c7301 KW |
1657 | if (ret < 0) { |
1658 | return ret; | |
1659 | } | |
1660 | ||
1661 | sector_num += n; | |
1662 | nb_sectors -= n; | |
1663 | buf += n * BDRV_SECTOR_SIZE; | |
1664 | } | |
1665 | ||
1666 | return 0; | |
1667 | } | |
1668 | ||
2d9187bc PL |
1669 | |
1670 | static int coroutine_fn convert_co_write(ImgConvertState *s, int64_t sector_num, | |
1671 | int nb_sectors, uint8_t *buf, | |
1672 | enum ImgConvertBlockStatus status) | |
690c7301 KW |
1673 | { |
1674 | int ret; | |
2d9187bc PL |
1675 | QEMUIOVector qiov; |
1676 | struct iovec iov; | |
690c7301 KW |
1677 | |
1678 | while (nb_sectors > 0) { | |
1679 | int n = nb_sectors; | |
db933fbe LC |
1680 | BdrvRequestFlags flags = s->compressed ? BDRV_REQ_WRITE_COMPRESSED : 0; |
1681 | ||
2d9187bc | 1682 | switch (status) { |
690c7301 KW |
1683 | case BLK_BACKING_FILE: |
1684 | /* If we have a backing file, leave clusters unallocated that are | |
1685 | * unallocated in the source image, so that the backing file is | |
1686 | * visible at the respective offset. */ | |
1687 | assert(s->target_has_backing); | |
1688 | break; | |
1689 | ||
1690 | case BLK_DATA: | |
db933fbe LC |
1691 | /* If we're told to keep the target fully allocated (-S 0) or there |
1692 | * is real non-zero data, we must write it. Otherwise we can treat | |
1693 | * it as zero sectors. | |
1694 | * Compressed clusters need to be written as a whole, so in that | |
1695 | * case we can only save the write if the buffer is completely | |
1696 | * zeroed. */ | |
690c7301 | 1697 | if (!s->min_sparse || |
db933fbe LC |
1698 | (!s->compressed && |
1699 | is_allocated_sectors_min(buf, n, &n, s->min_sparse)) || | |
1700 | (s->compressed && | |
1701 | !buffer_is_zero(buf, n * BDRV_SECTOR_SIZE))) | |
690c7301 | 1702 | { |
2d9187bc PL |
1703 | iov.iov_base = buf; |
1704 | iov.iov_len = n << BDRV_SECTOR_BITS; | |
1705 | qemu_iovec_init_external(&qiov, &iov, 1); | |
1706 | ||
1707 | ret = blk_co_pwritev(s->target, sector_num << BDRV_SECTOR_BITS, | |
db933fbe | 1708 | n << BDRV_SECTOR_BITS, &qiov, flags); |
690c7301 KW |
1709 | if (ret < 0) { |
1710 | return ret; | |
1711 | } | |
1712 | break; | |
1713 | } | |
1714 | /* fall-through */ | |
1715 | ||
1716 | case BLK_ZERO: | |
1717 | if (s->has_zero_init) { | |
db933fbe | 1718 | assert(!s->target_has_backing); |
690c7301 KW |
1719 | break; |
1720 | } | |
2d9187bc PL |
1721 | ret = blk_co_pwrite_zeroes(s->target, |
1722 | sector_num << BDRV_SECTOR_BITS, | |
1723 | n << BDRV_SECTOR_BITS, 0); | |
690c7301 KW |
1724 | if (ret < 0) { |
1725 | return ret; | |
1726 | } | |
1727 | break; | |
1728 | } | |
1729 | ||
1730 | sector_num += n; | |
1731 | nb_sectors -= n; | |
1732 | buf += n * BDRV_SECTOR_SIZE; | |
1733 | } | |
1734 | ||
1735 | return 0; | |
1736 | } | |
1737 | ||
2d9187bc | 1738 | static void coroutine_fn convert_co_do_copy(void *opaque) |
690c7301 | 1739 | { |
2d9187bc | 1740 | ImgConvertState *s = opaque; |
690c7301 | 1741 | uint8_t *buf = NULL; |
2d9187bc PL |
1742 | int ret, i; |
1743 | int index = -1; | |
1744 | ||
1745 | for (i = 0; i < s->num_coroutines; i++) { | |
1746 | if (s->co[i] == qemu_coroutine_self()) { | |
1747 | index = i; | |
1748 | break; | |
1749 | } | |
1750 | } | |
1751 | assert(index >= 0); | |
1752 | ||
1753 | s->running_coroutines++; | |
1754 | buf = blk_blockalign(s->target, s->buf_sectors * BDRV_SECTOR_SIZE); | |
1755 | ||
1756 | while (1) { | |
1757 | int n; | |
1758 | int64_t sector_num; | |
1759 | enum ImgConvertBlockStatus status; | |
1760 | ||
1761 | qemu_co_mutex_lock(&s->lock); | |
1762 | if (s->ret != -EINPROGRESS || s->sector_num >= s->total_sectors) { | |
1763 | qemu_co_mutex_unlock(&s->lock); | |
b91127ed | 1764 | break; |
2d9187bc PL |
1765 | } |
1766 | n = convert_iteration_sectors(s, s->sector_num); | |
1767 | if (n < 0) { | |
1768 | qemu_co_mutex_unlock(&s->lock); | |
1769 | s->ret = n; | |
b91127ed | 1770 | break; |
2d9187bc PL |
1771 | } |
1772 | /* save current sector and allocation status to local variables */ | |
1773 | sector_num = s->sector_num; | |
1774 | status = s->status; | |
1775 | if (!s->min_sparse && s->status == BLK_ZERO) { | |
1776 | n = MIN(n, s->buf_sectors); | |
1777 | } | |
1778 | /* increment global sector counter so that other coroutines can | |
1779 | * already continue reading beyond this request */ | |
1780 | s->sector_num += n; | |
1781 | qemu_co_mutex_unlock(&s->lock); | |
1782 | ||
1783 | if (status == BLK_DATA || (!s->min_sparse && status == BLK_ZERO)) { | |
1784 | s->allocated_done += n; | |
1785 | qemu_progress_print(100.0 * s->allocated_done / | |
1786 | s->allocated_sectors, 0); | |
1787 | } | |
1788 | ||
1789 | if (status == BLK_DATA) { | |
1790 | ret = convert_co_read(s, sector_num, n, buf); | |
1791 | if (ret < 0) { | |
1792 | error_report("error while reading sector %" PRId64 | |
1793 | ": %s", sector_num, strerror(-ret)); | |
1794 | s->ret = ret; | |
2d9187bc PL |
1795 | } |
1796 | } else if (!s->min_sparse && status == BLK_ZERO) { | |
1797 | status = BLK_DATA; | |
1798 | memset(buf, 0x00, n * BDRV_SECTOR_SIZE); | |
1799 | } | |
1800 | ||
1801 | if (s->wr_in_order) { | |
1802 | /* keep writes in order */ | |
b91127ed | 1803 | while (s->wr_offs != sector_num && s->ret == -EINPROGRESS) { |
2d9187bc PL |
1804 | s->wait_sector_num[index] = sector_num; |
1805 | qemu_coroutine_yield(); | |
1806 | } | |
1807 | s->wait_sector_num[index] = -1; | |
1808 | } | |
1809 | ||
b91127ed AN |
1810 | if (s->ret == -EINPROGRESS) { |
1811 | ret = convert_co_write(s, sector_num, n, buf, status); | |
1812 | if (ret < 0) { | |
1813 | error_report("error while writing sector %" PRId64 | |
1814 | ": %s", sector_num, strerror(-ret)); | |
1815 | s->ret = ret; | |
1816 | } | |
2d9187bc PL |
1817 | } |
1818 | ||
1819 | if (s->wr_in_order) { | |
1820 | /* reenter the coroutine that might have waited | |
1821 | * for this write to complete */ | |
1822 | s->wr_offs = sector_num + n; | |
1823 | for (i = 0; i < s->num_coroutines; i++) { | |
1824 | if (s->co[i] && s->wait_sector_num[i] == s->wr_offs) { | |
1825 | /* | |
1826 | * A -> B -> A cannot occur because A has | |
1827 | * s->wait_sector_num[i] == -1 during A -> B. Therefore | |
1828 | * B will never enter A during this time window. | |
1829 | */ | |
1830 | qemu_coroutine_enter(s->co[i]); | |
1831 | break; | |
1832 | } | |
1833 | } | |
1834 | } | |
1835 | } | |
1836 | ||
2d9187bc PL |
1837 | qemu_vfree(buf); |
1838 | s->co[index] = NULL; | |
1839 | s->running_coroutines--; | |
1840 | if (!s->running_coroutines && s->ret == -EINPROGRESS) { | |
1841 | /* the convert job finished successfully */ | |
1842 | s->ret = 0; | |
1843 | } | |
1844 | } | |
1845 | ||
1846 | static int convert_do_copy(ImgConvertState *s) | |
1847 | { | |
1848 | int ret, i, n; | |
1849 | int64_t sector_num = 0; | |
690c7301 KW |
1850 | |
1851 | /* Check whether we have zero initialisation or can get it efficiently */ | |
1852 | s->has_zero_init = s->min_sparse && !s->target_has_backing | |
1853 | ? bdrv_has_zero_init(blk_bs(s->target)) | |
1854 | : false; | |
1855 | ||
1856 | if (!s->has_zero_init && !s->target_has_backing && | |
1857 | bdrv_can_write_zeroes_with_unmap(blk_bs(s->target))) | |
1858 | { | |
720ff280 | 1859 | ret = blk_make_zero(s->target, BDRV_REQ_MAY_UNMAP); |
690c7301 KW |
1860 | if (ret == 0) { |
1861 | s->has_zero_init = true; | |
1862 | } | |
1863 | } | |
1864 | ||
1865 | /* Allocate buffer for copied data. For compressed images, only one cluster | |
1866 | * can be copied at a time. */ | |
1867 | if (s->compressed) { | |
1868 | if (s->cluster_sectors <= 0 || s->cluster_sectors > s->buf_sectors) { | |
1869 | error_report("invalid cluster size"); | |
2d9187bc | 1870 | return -EINVAL; |
690c7301 KW |
1871 | } |
1872 | s->buf_sectors = s->cluster_sectors; | |
1873 | } | |
690c7301 | 1874 | |
690c7301 KW |
1875 | while (sector_num < s->total_sectors) { |
1876 | n = convert_iteration_sectors(s, sector_num); | |
1877 | if (n < 0) { | |
2d9187bc | 1878 | return n; |
690c7301 | 1879 | } |
aad15de4 HR |
1880 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
1881 | { | |
690c7301 KW |
1882 | s->allocated_sectors += n; |
1883 | } | |
1884 | sector_num += n; | |
1885 | } | |
1886 | ||
1887 | /* Do the copy */ | |
690c7301 | 1888 | s->sector_next_status = 0; |
2d9187bc | 1889 | s->ret = -EINPROGRESS; |
690c7301 | 1890 | |
2d9187bc PL |
1891 | qemu_co_mutex_init(&s->lock); |
1892 | for (i = 0; i < s->num_coroutines; i++) { | |
1893 | s->co[i] = qemu_coroutine_create(convert_co_do_copy, s); | |
1894 | s->wait_sector_num[i] = -1; | |
1895 | qemu_coroutine_enter(s->co[i]); | |
1896 | } | |
690c7301 | 1897 | |
b91127ed | 1898 | while (s->running_coroutines) { |
2d9187bc | 1899 | main_loop_wait(false); |
690c7301 KW |
1900 | } |
1901 | ||
2d9187bc | 1902 | if (s->compressed && !s->ret) { |
690c7301 | 1903 | /* signal EOF to align */ |
fe5c1355 | 1904 | ret = blk_pwrite_compressed(s->target, 0, NULL, 0); |
690c7301 | 1905 | if (ret < 0) { |
2d9187bc | 1906 | return ret; |
690c7301 KW |
1907 | } |
1908 | } | |
1909 | ||
2d9187bc | 1910 | return s->ret; |
690c7301 KW |
1911 | } |
1912 | ||
ea2384d3 FB |
1913 | static int img_convert(int argc, char **argv) |
1914 | { | |
9fd77f99 | 1915 | int c, bs_i, flags, src_flags = 0; |
305b4c60 | 1916 | const char *fmt = NULL, *out_fmt = NULL, *cache = "unsafe", |
9fd77f99 PL |
1917 | *src_cache = BDRV_DEFAULT_CACHE, *out_baseimg = NULL, |
1918 | *out_filename, *out_baseimg_param, *snapshot_name = NULL; | |
305b4c60 | 1919 | BlockDriver *drv = NULL, *proto_drv = NULL; |
faea38e7 | 1920 | BlockDriverInfo bdi; |
9fd77f99 PL |
1921 | BlockDriverState *out_bs; |
1922 | QemuOpts *opts = NULL, *sn_opts = NULL; | |
83d0521a | 1923 | QemuOptsList *create_opts = NULL; |
efa84d43 | 1924 | char *options = NULL; |
cc84d90f | 1925 | Error *local_err = NULL; |
9fd77f99 | 1926 | bool writethrough, src_writethrough, quiet = false, image_opts = false, |
305b4c60 | 1927 | skip_create = false, progress = false, tgt_image_opts = false; |
9fd77f99 | 1928 | int64_t ret = -EINVAL; |
335e9937 | 1929 | bool force_share = false; |
9fd77f99 PL |
1930 | |
1931 | ImgConvertState s = (ImgConvertState) { | |
1932 | /* Need at least 4k of zeros for sparse detection */ | |
1933 | .min_sparse = 8, | |
1934 | .buf_sectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE, | |
1935 | .wr_in_order = true, | |
1936 | .num_coroutines = 8, | |
1937 | }; | |
ea2384d3 | 1938 | |
ea2384d3 | 1939 | for(;;) { |
3babeb15 DB |
1940 | static const struct option long_options[] = { |
1941 | {"help", no_argument, 0, 'h'}, | |
1942 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1943 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 1944 | {"force-share", no_argument, 0, 'U'}, |
305b4c60 | 1945 | {"target-image-opts", no_argument, 0, OPTION_TARGET_IMAGE_OPTS}, |
3babeb15 DB |
1946 | {0, 0, 0, 0} |
1947 | }; | |
6b4df548 | 1948 | c = getopt_long(argc, argv, ":hf:O:B:co:s:l:S:pt:T:qnm:WU", |
3babeb15 | 1949 | long_options, NULL); |
b8fb60da | 1950 | if (c == -1) { |
ea2384d3 | 1951 | break; |
b8fb60da | 1952 | } |
ea2384d3 | 1953 | switch(c) { |
c9192973 SH |
1954 | case ':': |
1955 | missing_argument(argv[optind - 1]); | |
1956 | break; | |
ef87394c | 1957 | case '?': |
c9192973 SH |
1958 | unrecognized_option(argv[optind - 1]); |
1959 | break; | |
ea2384d3 FB |
1960 | case 'h': |
1961 | help(); | |
1962 | break; | |
1963 | case 'f': | |
1964 | fmt = optarg; | |
1965 | break; | |
1966 | case 'O': | |
1967 | out_fmt = optarg; | |
1968 | break; | |
f58c7b35 TS |
1969 | case 'B': |
1970 | out_baseimg = optarg; | |
1971 | break; | |
ea2384d3 | 1972 | case 'c': |
9fd77f99 | 1973 | s.compressed = true; |
ea2384d3 | 1974 | break; |
efa84d43 | 1975 | case 'o': |
2dc8328b KW |
1976 | if (!is_valid_option_list(optarg)) { |
1977 | error_report("Invalid option list: %s", optarg); | |
64bb01aa | 1978 | goto fail_getopt; |
2dc8328b KW |
1979 | } |
1980 | if (!options) { | |
1981 | options = g_strdup(optarg); | |
1982 | } else { | |
1983 | char *old_options = options; | |
1984 | options = g_strdup_printf("%s,%s", options, optarg); | |
1985 | g_free(old_options); | |
1986 | } | |
efa84d43 | 1987 | break; |
51ef6727 | 1988 | case 's': |
1989 | snapshot_name = optarg; | |
1990 | break; | |
ef80654d WX |
1991 | case 'l': |
1992 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
70b94331 MA |
1993 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, |
1994 | optarg, false); | |
ef80654d WX |
1995 | if (!sn_opts) { |
1996 | error_report("Failed in parsing snapshot param '%s'", | |
1997 | optarg); | |
64bb01aa | 1998 | goto fail_getopt; |
ef80654d WX |
1999 | } |
2000 | } else { | |
2001 | snapshot_name = optarg; | |
2002 | } | |
2003 | break; | |
a22f123c KW |
2004 | case 'S': |
2005 | { | |
2006 | int64_t sval; | |
606caa0a MA |
2007 | |
2008 | sval = cvtnum(optarg); | |
2009 | if (sval < 0) { | |
a22f123c | 2010 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
64bb01aa | 2011 | goto fail_getopt; |
a22f123c KW |
2012 | } |
2013 | ||
9fd77f99 | 2014 | s.min_sparse = sval / BDRV_SECTOR_SIZE; |
a22f123c KW |
2015 | break; |
2016 | } | |
6b837bc4 | 2017 | case 'p': |
9fd77f99 | 2018 | progress = true; |
6b837bc4 | 2019 | break; |
661a0f71 FS |
2020 | case 't': |
2021 | cache = optarg; | |
2022 | break; | |
40055951 HR |
2023 | case 'T': |
2024 | src_cache = optarg; | |
2025 | break; | |
f382d43a MR |
2026 | case 'q': |
2027 | quiet = true; | |
2028 | break; | |
b2e10493 | 2029 | case 'n': |
9fd77f99 | 2030 | skip_create = true; |
b2e10493 | 2031 | break; |
2d9187bc | 2032 | case 'm': |
9fd77f99 PL |
2033 | if (qemu_strtol(optarg, NULL, 0, &s.num_coroutines) || |
2034 | s.num_coroutines < 1 || s.num_coroutines > MAX_COROUTINES) { | |
2d9187bc PL |
2035 | error_report("Invalid number of coroutines. Allowed number of" |
2036 | " coroutines is between 1 and %d", MAX_COROUTINES); | |
2d9187bc PL |
2037 | goto fail_getopt; |
2038 | } | |
2039 | break; | |
2040 | case 'W': | |
9fd77f99 | 2041 | s.wr_in_order = false; |
2d9187bc | 2042 | break; |
335e9937 FZ |
2043 | case 'U': |
2044 | force_share = true; | |
2045 | break; | |
3258b911 HR |
2046 | case OPTION_OBJECT: { |
2047 | QemuOpts *object_opts; | |
2048 | object_opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2049 | optarg, true); | |
2050 | if (!object_opts) { | |
3babeb15 DB |
2051 | goto fail_getopt; |
2052 | } | |
2053 | break; | |
3258b911 | 2054 | } |
eb769f74 DB |
2055 | case OPTION_IMAGE_OPTS: |
2056 | image_opts = true; | |
2057 | break; | |
305b4c60 DB |
2058 | case OPTION_TARGET_IMAGE_OPTS: |
2059 | tgt_image_opts = true; | |
2060 | break; | |
ea2384d3 FB |
2061 | } |
2062 | } | |
3b46e624 | 2063 | |
305b4c60 DB |
2064 | if (!out_fmt && !tgt_image_opts) { |
2065 | out_fmt = "raw"; | |
2066 | } | |
2067 | ||
3babeb15 DB |
2068 | if (qemu_opts_foreach(&qemu_object_opts, |
2069 | user_creatable_add_opts_foreach, | |
51b9b478 | 2070 | NULL, NULL)) { |
3babeb15 DB |
2071 | goto fail_getopt; |
2072 | } | |
2073 | ||
9fd77f99 | 2074 | if (!s.wr_in_order && s.compressed) { |
2d9187bc | 2075 | error_report("Out of order write and compress are mutually exclusive"); |
2d9187bc PL |
2076 | goto fail_getopt; |
2077 | } | |
2078 | ||
305b4c60 DB |
2079 | if (tgt_image_opts && !skip_create) { |
2080 | error_report("--target-image-opts requires use of -n flag"); | |
2081 | goto fail_getopt; | |
2082 | } | |
2083 | ||
9fd77f99 PL |
2084 | s.src_num = argc - optind - 1; |
2085 | out_filename = s.src_num >= 1 ? argv[argc - 1] : NULL; | |
f58c7b35 | 2086 | |
2dc8328b | 2087 | if (options && has_help_option(options)) { |
305b4c60 DB |
2088 | if (out_fmt) { |
2089 | ret = print_block_option_help(out_filename, out_fmt); | |
2090 | goto fail_getopt; | |
2091 | } else { | |
2092 | error_report("Option help requires a format be specified"); | |
2093 | goto fail_getopt; | |
2094 | } | |
4ac8aacd JS |
2095 | } |
2096 | ||
9fd77f99 PL |
2097 | if (s.src_num < 1) { |
2098 | error_report("Must specify image file name"); | |
2099 | goto fail_getopt; | |
a283cb6e KW |
2100 | } |
2101 | ||
2102 | ||
9fd77f99 | 2103 | /* ret is still -EINVAL until here */ |
ce099547 | 2104 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); |
40055951 HR |
2105 | if (ret < 0) { |
2106 | error_report("Invalid source cache option: %s", src_cache); | |
9fd77f99 | 2107 | goto fail_getopt; |
40055951 HR |
2108 | } |
2109 | ||
9fd77f99 PL |
2110 | /* Initialize before goto out */ |
2111 | if (quiet) { | |
2112 | progress = false; | |
2113 | } | |
2114 | qemu_progress_init(progress, 1.0); | |
6b837bc4 JS |
2115 | qemu_progress_print(0, 100); |
2116 | ||
9fd77f99 PL |
2117 | s.src = g_new0(BlockBackend *, s.src_num); |
2118 | s.src_sectors = g_new(int64_t, s.src_num); | |
926c2d23 | 2119 | |
9fd77f99 PL |
2120 | for (bs_i = 0; bs_i < s.src_num; bs_i++) { |
2121 | s.src[bs_i] = img_open(image_opts, argv[optind + bs_i], | |
335e9937 FZ |
2122 | fmt, src_flags, src_writethrough, quiet, |
2123 | force_share); | |
9fd77f99 | 2124 | if (!s.src[bs_i]) { |
c2abccec MK |
2125 | ret = -1; |
2126 | goto out; | |
2127 | } | |
9fd77f99 PL |
2128 | s.src_sectors[bs_i] = blk_nb_sectors(s.src[bs_i]); |
2129 | if (s.src_sectors[bs_i] < 0) { | |
52bf1e72 | 2130 | error_report("Could not get size of %s: %s", |
9fd77f99 | 2131 | argv[optind + bs_i], strerror(-s.src_sectors[bs_i])); |
52bf1e72 MA |
2132 | ret = -1; |
2133 | goto out; | |
2134 | } | |
9fd77f99 | 2135 | s.total_sectors += s.src_sectors[bs_i]; |
926c2d23 | 2136 | } |
ea2384d3 | 2137 | |
ef80654d | 2138 | if (sn_opts) { |
9fd77f99 | 2139 | bdrv_snapshot_load_tmp(blk_bs(s.src[0]), |
10d6eda1 PM |
2140 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), |
2141 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
2142 | &local_err); | |
ef80654d | 2143 | } else if (snapshot_name != NULL) { |
9fd77f99 | 2144 | if (s.src_num > 1) { |
6daf194d | 2145 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 2146 | ret = -1; |
2147 | goto out; | |
2148 | } | |
7b4c4781 | 2149 | |
9fd77f99 PL |
2150 | bdrv_snapshot_load_tmp_by_id_or_name(blk_bs(s.src[0]), snapshot_name, |
2151 | &local_err); | |
ef80654d | 2152 | } |
84d18f06 | 2153 | if (local_err) { |
c29b77f9 | 2154 | error_reportf_err(local_err, "Failed to load snapshot: "); |
ef80654d WX |
2155 | ret = -1; |
2156 | goto out; | |
51ef6727 | 2157 | } |
2158 | ||
305b4c60 DB |
2159 | if (!skip_create) { |
2160 | /* Find driver and parse its options */ | |
2161 | drv = bdrv_find_format(out_fmt); | |
2162 | if (!drv) { | |
2163 | error_report("Unknown file format '%s'", out_fmt); | |
2164 | ret = -1; | |
2165 | goto out; | |
2166 | } | |
efa84d43 | 2167 | |
305b4c60 DB |
2168 | proto_drv = bdrv_find_protocol(out_filename, true, &local_err); |
2169 | if (!proto_drv) { | |
2170 | error_report_err(local_err); | |
2171 | ret = -1; | |
2172 | goto out; | |
2173 | } | |
b50cbabc | 2174 | |
2e024cde HR |
2175 | if (!drv->create_opts) { |
2176 | error_report("Format driver '%s' does not support image creation", | |
2177 | drv->format_name); | |
2178 | ret = -1; | |
2179 | goto out; | |
2180 | } | |
f75613cf | 2181 | |
2e024cde HR |
2182 | if (!proto_drv->create_opts) { |
2183 | error_report("Protocol driver '%s' does not support image creation", | |
2184 | proto_drv->format_name); | |
2185 | ret = -1; | |
2186 | goto out; | |
2187 | } | |
f75613cf | 2188 | |
2e024cde HR |
2189 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
2190 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 2191 | |
2e024cde | 2192 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
2193 | if (options) { |
2194 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
2195 | if (local_err) { | |
97a2ca7a | 2196 | error_report_err(local_err); |
dc523cd3 MA |
2197 | ret = -1; |
2198 | goto out; | |
2199 | } | |
2e024cde | 2200 | } |
efa84d43 | 2201 | |
9fd77f99 | 2202 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, s.total_sectors * 512, |
39101f25 | 2203 | &error_abort); |
2e024cde HR |
2204 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); |
2205 | if (ret < 0) { | |
2206 | goto out; | |
2207 | } | |
c2abccec | 2208 | } |
efa84d43 | 2209 | |
a18953fb | 2210 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 2211 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 2212 | if (out_baseimg_param) { |
83d0521a | 2213 | out_baseimg = out_baseimg_param; |
a18953fb | 2214 | } |
9fd77f99 | 2215 | s.target_has_backing = (bool) out_baseimg; |
a18953fb | 2216 | |
48758a84 HR |
2217 | if (s.src_num > 1 && out_baseimg) { |
2218 | error_report("Having a backing file for the target makes no sense when " | |
2219 | "concatenating multiple input images"); | |
2220 | ret = -1; | |
2221 | goto out; | |
2222 | } | |
2223 | ||
efa84d43 | 2224 | /* Check if compression is supported */ |
9fd77f99 | 2225 | if (s.compressed) { |
83d0521a CL |
2226 | bool encryption = |
2227 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
0cb8d47b DB |
2228 | const char *encryptfmt = |
2229 | qemu_opt_get(opts, BLOCK_OPT_ENCRYPT_FORMAT); | |
83d0521a CL |
2230 | const char *preallocation = |
2231 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 | 2232 | |
305b4c60 | 2233 | if (drv && !drv->bdrv_co_pwritev_compressed) { |
15654a6d | 2234 | error_report("Compression not supported for this file format"); |
c2abccec MK |
2235 | ret = -1; |
2236 | goto out; | |
efa84d43 KW |
2237 | } |
2238 | ||
0cb8d47b | 2239 | if (encryption || encryptfmt) { |
15654a6d JS |
2240 | error_report("Compression and encryption not supported at " |
2241 | "the same time"); | |
c2abccec MK |
2242 | ret = -1; |
2243 | goto out; | |
efa84d43 | 2244 | } |
41521fa4 | 2245 | |
83d0521a CL |
2246 | if (preallocation |
2247 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
2248 | { |
2249 | error_report("Compression and preallocation not supported at " | |
2250 | "the same time"); | |
2251 | ret = -1; | |
2252 | goto out; | |
2253 | } | |
efa84d43 KW |
2254 | } |
2255 | ||
b2e10493 AD |
2256 | if (!skip_create) { |
2257 | /* Create the new image */ | |
c282e1fd | 2258 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 2259 | if (ret < 0) { |
c29b77f9 MA |
2260 | error_reportf_err(local_err, "%s: error while converting %s: ", |
2261 | out_filename, out_fmt); | |
b2e10493 | 2262 | goto out; |
ea2384d3 FB |
2263 | } |
2264 | } | |
3b46e624 | 2265 | |
9fd77f99 | 2266 | flags = s.min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
ce099547 | 2267 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2268 | if (ret < 0) { |
2269 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 2270 | goto out; |
661a0f71 FS |
2271 | } |
2272 | ||
305b4c60 DB |
2273 | if (skip_create) { |
2274 | s.target = img_open(tgt_image_opts, out_filename, out_fmt, | |
2275 | flags, writethrough, quiet, false); | |
2276 | } else { | |
2277 | /* TODO ultimately we should allow --target-image-opts | |
2278 | * to be used even when -n is not given. | |
2279 | * That has to wait for bdrv_create to be improved | |
2280 | * to allow filenames in option syntax | |
2281 | */ | |
29cf9336 DB |
2282 | s.target = img_open_new_file(out_filename, opts, out_fmt, |
2283 | flags, writethrough, quiet, false); | |
305b4c60 | 2284 | } |
9fd77f99 | 2285 | if (!s.target) { |
c2abccec MK |
2286 | ret = -1; |
2287 | goto out; | |
2288 | } | |
9fd77f99 | 2289 | out_bs = blk_bs(s.target); |
ea2384d3 | 2290 | |
305b4c60 DB |
2291 | if (s.compressed && !out_bs->drv->bdrv_co_pwritev_compressed) { |
2292 | error_report("Compression not supported for this file format"); | |
2293 | ret = -1; | |
2294 | goto out; | |
2295 | } | |
2296 | ||
5def6b80 | 2297 | /* increase bufsectors from the default 4096 (2M) if opt_transfer |
f2521c90 PL |
2298 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) |
2299 | * as maximum. */ | |
9fd77f99 PL |
2300 | s.buf_sectors = MIN(32768, |
2301 | MAX(s.buf_sectors, | |
2302 | MAX(out_bs->bl.opt_transfer >> BDRV_SECTOR_BITS, | |
2303 | out_bs->bl.pdiscard_alignment >> | |
2304 | BDRV_SECTOR_BITS))); | |
f2521c90 | 2305 | |
b2e10493 | 2306 | if (skip_create) { |
9fd77f99 | 2307 | int64_t output_sectors = blk_nb_sectors(s.target); |
43716fa8 | 2308 | if (output_sectors < 0) { |
eec5eb42 | 2309 | error_report("unable to get output image length: %s", |
43716fa8 | 2310 | strerror(-output_sectors)); |
b2e10493 AD |
2311 | ret = -1; |
2312 | goto out; | |
9fd77f99 | 2313 | } else if (output_sectors < s.total_sectors) { |
b2e10493 AD |
2314 | error_report("output file is smaller than input file"); |
2315 | ret = -1; | |
2316 | goto out; | |
2317 | } | |
2318 | } | |
2319 | ||
24f833cd PL |
2320 | ret = bdrv_get_info(out_bs, &bdi); |
2321 | if (ret < 0) { | |
9fd77f99 | 2322 | if (s.compressed) { |
15654a6d | 2323 | error_report("could not get block driver info"); |
c2abccec MK |
2324 | goto out; |
2325 | } | |
24f833cd | 2326 | } else { |
9fd77f99 PL |
2327 | s.compressed = s.compressed || bdi.needs_compressed_writes; |
2328 | s.cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; | |
2329 | } | |
802c3d4c | 2330 | |
9fd77f99 | 2331 | ret = convert_do_copy(&s); |
c2abccec | 2332 | out: |
13c28af8 PL |
2333 | if (!ret) { |
2334 | qemu_progress_print(100, 0); | |
2335 | } | |
6b837bc4 | 2336 | qemu_progress_end(); |
83d0521a CL |
2337 | qemu_opts_del(opts); |
2338 | qemu_opts_free(create_opts); | |
fbf28a43 | 2339 | qemu_opts_del(sn_opts); |
9fd77f99 PL |
2340 | blk_unref(s.target); |
2341 | if (s.src) { | |
2342 | for (bs_i = 0; bs_i < s.src_num; bs_i++) { | |
2343 | blk_unref(s.src[bs_i]); | |
26f54e9a | 2344 | } |
9fd77f99 | 2345 | g_free(s.src); |
26f54e9a | 2346 | } |
9fd77f99 | 2347 | g_free(s.src_sectors); |
64bb01aa KW |
2348 | fail_getopt: |
2349 | g_free(options); | |
2350 | ||
9fd77f99 | 2351 | return !!ret; |
ea2384d3 FB |
2352 | } |
2353 | ||
57d1a2b6 | 2354 | |
faea38e7 FB |
2355 | static void dump_snapshots(BlockDriverState *bs) |
2356 | { | |
2357 | QEMUSnapshotInfo *sn_tab, *sn; | |
2358 | int nb_sns, i; | |
faea38e7 FB |
2359 | |
2360 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
2361 | if (nb_sns <= 0) | |
2362 | return; | |
2363 | printf("Snapshot list:\n"); | |
5b917044 WX |
2364 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
2365 | printf("\n"); | |
faea38e7 FB |
2366 | for(i = 0; i < nb_sns; i++) { |
2367 | sn = &sn_tab[i]; | |
5b917044 WX |
2368 | bdrv_snapshot_dump(fprintf, stdout, sn); |
2369 | printf("\n"); | |
faea38e7 | 2370 | } |
7267c094 | 2371 | g_free(sn_tab); |
faea38e7 FB |
2372 | } |
2373 | ||
9699bf0d SH |
2374 | static void dump_json_image_info_list(ImageInfoList *list) |
2375 | { | |
9699bf0d | 2376 | QString *str; |
9699bf0d | 2377 | QObject *obj; |
7d5e199a | 2378 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
2379 | |
2380 | visit_type_ImageInfoList(v, NULL, &list, &error_abort); | |
2381 | visit_complete(v, &obj); | |
9699bf0d SH |
2382 | str = qobject_to_json_pretty(obj); |
2383 | assert(str != NULL); | |
2384 | printf("%s\n", qstring_get_str(str)); | |
2385 | qobject_decref(obj); | |
3b098d56 | 2386 | visit_free(v); |
9699bf0d SH |
2387 | QDECREF(str); |
2388 | } | |
2389 | ||
c054b3fd BC |
2390 | static void dump_json_image_info(ImageInfo *info) |
2391 | { | |
c054b3fd | 2392 | QString *str; |
c054b3fd | 2393 | QObject *obj; |
7d5e199a | 2394 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
2395 | |
2396 | visit_type_ImageInfo(v, NULL, &info, &error_abort); | |
2397 | visit_complete(v, &obj); | |
c054b3fd BC |
2398 | str = qobject_to_json_pretty(obj); |
2399 | assert(str != NULL); | |
2400 | printf("%s\n", qstring_get_str(str)); | |
2401 | qobject_decref(obj); | |
3b098d56 | 2402 | visit_free(v); |
c054b3fd BC |
2403 | QDECREF(str); |
2404 | } | |
2405 | ||
9699bf0d SH |
2406 | static void dump_human_image_info_list(ImageInfoList *list) |
2407 | { | |
2408 | ImageInfoList *elem; | |
2409 | bool delim = false; | |
2410 | ||
2411 | for (elem = list; elem; elem = elem->next) { | |
2412 | if (delim) { | |
2413 | printf("\n"); | |
2414 | } | |
2415 | delim = true; | |
2416 | ||
5b917044 | 2417 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
2418 | } |
2419 | } | |
2420 | ||
2421 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
2422 | { | |
2423 | return strcmp(a, b) == 0; | |
2424 | } | |
2425 | ||
2426 | /** | |
2427 | * Open an image file chain and return an ImageInfoList | |
2428 | * | |
2429 | * @filename: topmost image filename | |
2430 | * @fmt: topmost image format (may be NULL to autodetect) | |
2431 | * @chain: true - enumerate entire backing file chain | |
2432 | * false - only topmost image file | |
2433 | * | |
2434 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
2435 | * image file. If there was an error a message will have been printed to | |
2436 | * stderr. | |
2437 | */ | |
eb769f74 DB |
2438 | static ImageInfoList *collect_image_info_list(bool image_opts, |
2439 | const char *filename, | |
9699bf0d | 2440 | const char *fmt, |
335e9937 | 2441 | bool chain, bool force_share) |
9699bf0d SH |
2442 | { |
2443 | ImageInfoList *head = NULL; | |
2444 | ImageInfoList **last = &head; | |
2445 | GHashTable *filenames; | |
43526ec8 | 2446 | Error *err = NULL; |
9699bf0d SH |
2447 | |
2448 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
2449 | ||
2450 | while (filename) { | |
26f54e9a | 2451 | BlockBackend *blk; |
9699bf0d SH |
2452 | BlockDriverState *bs; |
2453 | ImageInfo *info; | |
2454 | ImageInfoList *elem; | |
2455 | ||
2456 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
2457 | error_report("Backing file '%s' creates an infinite loop.", | |
2458 | filename); | |
2459 | goto err; | |
2460 | } | |
2461 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
2462 | ||
efaa7c4e | 2463 | blk = img_open(image_opts, filename, fmt, |
335e9937 FZ |
2464 | BDRV_O_NO_BACKING | BDRV_O_NO_IO, false, false, |
2465 | force_share); | |
7e7d56d9 | 2466 | if (!blk) { |
9699bf0d SH |
2467 | goto err; |
2468 | } | |
7e7d56d9 | 2469 | bs = blk_bs(blk); |
9699bf0d | 2470 | |
43526ec8 | 2471 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 2472 | if (err) { |
565f65d2 | 2473 | error_report_err(err); |
26f54e9a | 2474 | blk_unref(blk); |
43526ec8 | 2475 | goto err; |
fb0ed453 | 2476 | } |
9699bf0d SH |
2477 | |
2478 | elem = g_new0(ImageInfoList, 1); | |
2479 | elem->value = info; | |
2480 | *last = elem; | |
2481 | last = &elem->next; | |
2482 | ||
26f54e9a | 2483 | blk_unref(blk); |
9699bf0d SH |
2484 | |
2485 | filename = fmt = NULL; | |
2486 | if (chain) { | |
2487 | if (info->has_full_backing_filename) { | |
2488 | filename = info->full_backing_filename; | |
2489 | } else if (info->has_backing_filename) { | |
92d617ab JS |
2490 | error_report("Could not determine absolute backing filename," |
2491 | " but backing filename '%s' present", | |
2492 | info->backing_filename); | |
2493 | goto err; | |
9699bf0d SH |
2494 | } |
2495 | if (info->has_backing_filename_format) { | |
2496 | fmt = info->backing_filename_format; | |
2497 | } | |
2498 | } | |
2499 | } | |
2500 | g_hash_table_destroy(filenames); | |
2501 | return head; | |
2502 | ||
2503 | err: | |
2504 | qapi_free_ImageInfoList(head); | |
2505 | g_hash_table_destroy(filenames); | |
2506 | return NULL; | |
2507 | } | |
2508 | ||
c054b3fd BC |
2509 | static int img_info(int argc, char **argv) |
2510 | { | |
2511 | int c; | |
2512 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 2513 | bool chain = false; |
c054b3fd | 2514 | const char *filename, *fmt, *output; |
9699bf0d | 2515 | ImageInfoList *list; |
eb769f74 | 2516 | bool image_opts = false; |
335e9937 | 2517 | bool force_share = false; |
c054b3fd | 2518 | |
ea2384d3 | 2519 | fmt = NULL; |
c054b3fd | 2520 | output = NULL; |
ea2384d3 | 2521 | for(;;) { |
c054b3fd BC |
2522 | int option_index = 0; |
2523 | static const struct option long_options[] = { | |
2524 | {"help", no_argument, 0, 'h'}, | |
2525 | {"format", required_argument, 0, 'f'}, | |
2526 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 2527 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
3babeb15 | 2528 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2529 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 2530 | {"force-share", no_argument, 0, 'U'}, |
c054b3fd BC |
2531 | {0, 0, 0, 0} |
2532 | }; | |
335e9937 | 2533 | c = getopt_long(argc, argv, ":f:hU", |
c054b3fd | 2534 | long_options, &option_index); |
b8fb60da | 2535 | if (c == -1) { |
ea2384d3 | 2536 | break; |
b8fb60da | 2537 | } |
ea2384d3 | 2538 | switch(c) { |
c9192973 SH |
2539 | case ':': |
2540 | missing_argument(argv[optind - 1]); | |
2541 | break; | |
ef87394c | 2542 | case '?': |
c9192973 SH |
2543 | unrecognized_option(argv[optind - 1]); |
2544 | break; | |
ea2384d3 FB |
2545 | case 'h': |
2546 | help(); | |
2547 | break; | |
2548 | case 'f': | |
2549 | fmt = optarg; | |
2550 | break; | |
335e9937 FZ |
2551 | case 'U': |
2552 | force_share = true; | |
2553 | break; | |
c054b3fd BC |
2554 | case OPTION_OUTPUT: |
2555 | output = optarg; | |
2556 | break; | |
9699bf0d SH |
2557 | case OPTION_BACKING_CHAIN: |
2558 | chain = true; | |
2559 | break; | |
3babeb15 DB |
2560 | case OPTION_OBJECT: { |
2561 | QemuOpts *opts; | |
2562 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2563 | optarg, true); | |
2564 | if (!opts) { | |
2565 | return 1; | |
2566 | } | |
2567 | } break; | |
eb769f74 DB |
2568 | case OPTION_IMAGE_OPTS: |
2569 | image_opts = true; | |
2570 | break; | |
ea2384d3 FB |
2571 | } |
2572 | } | |
fc11eb26 | 2573 | if (optind != argc - 1) { |
ac1307ab | 2574 | error_exit("Expecting one image file name"); |
b8fb60da | 2575 | } |
ea2384d3 FB |
2576 | filename = argv[optind++]; |
2577 | ||
c054b3fd BC |
2578 | if (output && !strcmp(output, "json")) { |
2579 | output_format = OFORMAT_JSON; | |
2580 | } else if (output && !strcmp(output, "human")) { | |
2581 | output_format = OFORMAT_HUMAN; | |
2582 | } else if (output) { | |
2583 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
2584 | return 1; |
2585 | } | |
c054b3fd | 2586 | |
3babeb15 DB |
2587 | if (qemu_opts_foreach(&qemu_object_opts, |
2588 | user_creatable_add_opts_foreach, | |
51b9b478 | 2589 | NULL, NULL)) { |
3babeb15 DB |
2590 | return 1; |
2591 | } | |
2592 | ||
335e9937 FZ |
2593 | list = collect_image_info_list(image_opts, filename, fmt, chain, |
2594 | force_share); | |
9699bf0d | 2595 | if (!list) { |
c2abccec | 2596 | return 1; |
faea38e7 | 2597 | } |
c054b3fd | 2598 | |
c054b3fd BC |
2599 | switch (output_format) { |
2600 | case OFORMAT_HUMAN: | |
9699bf0d | 2601 | dump_human_image_info_list(list); |
c054b3fd BC |
2602 | break; |
2603 | case OFORMAT_JSON: | |
9699bf0d SH |
2604 | if (chain) { |
2605 | dump_json_image_info_list(list); | |
2606 | } else { | |
2607 | dump_json_image_info(list->value); | |
2608 | } | |
c054b3fd | 2609 | break; |
faea38e7 | 2610 | } |
c054b3fd | 2611 | |
9699bf0d | 2612 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2613 | return 0; |
2614 | } | |
2615 | ||
4c93a13b PB |
2616 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, |
2617 | MapEntry *next) | |
2618 | { | |
2619 | switch (output_format) { | |
2620 | case OFORMAT_HUMAN: | |
16b0d555 | 2621 | if (e->data && !e->has_offset) { |
4c93a13b PB |
2622 | error_report("File contains external, encrypted or compressed clusters."); |
2623 | exit(1); | |
2624 | } | |
16b0d555 | 2625 | if (e->data && !e->zero) { |
4c93a13b | 2626 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", |
16b0d555 FZ |
2627 | e->start, e->length, |
2628 | e->has_offset ? e->offset : 0, | |
2629 | e->has_filename ? e->filename : ""); | |
4c93a13b PB |
2630 | } |
2631 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2632 | * Modify the flags here to allow more coalescing. | |
2633 | */ | |
16b0d555 FZ |
2634 | if (next && (!next->data || next->zero)) { |
2635 | next->data = false; | |
2636 | next->zero = true; | |
4c93a13b PB |
2637 | } |
2638 | break; | |
2639 | case OFORMAT_JSON: | |
16b0d555 FZ |
2640 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64"," |
2641 | " \"depth\": %"PRId64", \"zero\": %s, \"data\": %s", | |
4c93a13b PB |
2642 | (e->start == 0 ? "[" : ",\n"), |
2643 | e->start, e->length, e->depth, | |
16b0d555 FZ |
2644 | e->zero ? "true" : "false", |
2645 | e->data ? "true" : "false"); | |
2646 | if (e->has_offset) { | |
c745bfb4 | 2647 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
2648 | } |
2649 | putchar('}'); | |
2650 | ||
2651 | if (!next) { | |
2652 | printf("]\n"); | |
2653 | } | |
2654 | break; | |
2655 | } | |
2656 | } | |
2657 | ||
5e344dd8 EB |
2658 | static int get_block_status(BlockDriverState *bs, int64_t offset, |
2659 | int64_t bytes, MapEntry *e) | |
4c93a13b | 2660 | { |
237d78f8 | 2661 | int ret; |
4c93a13b | 2662 | int depth; |
67a0fd2a | 2663 | BlockDriverState *file; |
2875645b | 2664 | bool has_offset; |
237d78f8 | 2665 | int64_t map; |
4c93a13b PB |
2666 | |
2667 | /* As an optimization, we could cache the current range of unallocated | |
2668 | * clusters in each file of the chain, and avoid querying the same | |
2669 | * range repeatedly. | |
2670 | */ | |
2671 | ||
2672 | depth = 0; | |
2673 | for (;;) { | |
237d78f8 | 2674 | ret = bdrv_block_status(bs, offset, bytes, &bytes, &map, &file); |
4c93a13b PB |
2675 | if (ret < 0) { |
2676 | return ret; | |
2677 | } | |
237d78f8 | 2678 | assert(bytes); |
4c93a13b PB |
2679 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { |
2680 | break; | |
2681 | } | |
760e0063 | 2682 | bs = backing_bs(bs); |
4c93a13b PB |
2683 | if (bs == NULL) { |
2684 | ret = 0; | |
2685 | break; | |
2686 | } | |
2687 | ||
2688 | depth++; | |
2689 | } | |
2690 | ||
2875645b JS |
2691 | has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID); |
2692 | ||
2693 | *e = (MapEntry) { | |
5e344dd8 | 2694 | .start = offset, |
237d78f8 | 2695 | .length = bytes, |
2875645b JS |
2696 | .data = !!(ret & BDRV_BLOCK_DATA), |
2697 | .zero = !!(ret & BDRV_BLOCK_ZERO), | |
237d78f8 | 2698 | .offset = map, |
2875645b JS |
2699 | .has_offset = has_offset, |
2700 | .depth = depth, | |
2701 | .has_filename = file && has_offset, | |
2702 | .filename = file && has_offset ? file->filename : NULL, | |
2703 | }; | |
2704 | ||
4c93a13b PB |
2705 | return 0; |
2706 | } | |
2707 | ||
16b0d555 FZ |
2708 | static inline bool entry_mergeable(const MapEntry *curr, const MapEntry *next) |
2709 | { | |
2710 | if (curr->length == 0) { | |
2711 | return false; | |
2712 | } | |
2713 | if (curr->zero != next->zero || | |
2714 | curr->data != next->data || | |
2715 | curr->depth != next->depth || | |
2716 | curr->has_filename != next->has_filename || | |
2717 | curr->has_offset != next->has_offset) { | |
2718 | return false; | |
2719 | } | |
2720 | if (curr->has_filename && strcmp(curr->filename, next->filename)) { | |
2721 | return false; | |
2722 | } | |
2723 | if (curr->has_offset && curr->offset + curr->length != next->offset) { | |
2724 | return false; | |
2725 | } | |
2726 | return true; | |
2727 | } | |
2728 | ||
4c93a13b PB |
2729 | static int img_map(int argc, char **argv) |
2730 | { | |
2731 | int c; | |
2732 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 2733 | BlockBackend *blk; |
4c93a13b PB |
2734 | BlockDriverState *bs; |
2735 | const char *filename, *fmt, *output; | |
2736 | int64_t length; | |
2737 | MapEntry curr = { .length = 0 }, next; | |
2738 | int ret = 0; | |
eb769f74 | 2739 | bool image_opts = false; |
335e9937 | 2740 | bool force_share = false; |
4c93a13b PB |
2741 | |
2742 | fmt = NULL; | |
2743 | output = NULL; | |
2744 | for (;;) { | |
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}, | |
3babeb15 | 2750 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2751 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 2752 | {"force-share", no_argument, 0, 'U'}, |
4c93a13b PB |
2753 | {0, 0, 0, 0} |
2754 | }; | |
335e9937 | 2755 | c = getopt_long(argc, argv, ":f:hU", |
4c93a13b PB |
2756 | long_options, &option_index); |
2757 | if (c == -1) { | |
2758 | break; | |
2759 | } | |
2760 | switch (c) { | |
c9192973 SH |
2761 | case ':': |
2762 | missing_argument(argv[optind - 1]); | |
2763 | break; | |
4c93a13b | 2764 | case '?': |
c9192973 SH |
2765 | unrecognized_option(argv[optind - 1]); |
2766 | break; | |
4c93a13b PB |
2767 | case 'h': |
2768 | help(); | |
2769 | break; | |
2770 | case 'f': | |
2771 | fmt = optarg; | |
2772 | break; | |
335e9937 FZ |
2773 | case 'U': |
2774 | force_share = true; | |
2775 | break; | |
4c93a13b PB |
2776 | case OPTION_OUTPUT: |
2777 | output = optarg; | |
2778 | break; | |
3babeb15 DB |
2779 | case OPTION_OBJECT: { |
2780 | QemuOpts *opts; | |
2781 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2782 | optarg, true); | |
2783 | if (!opts) { | |
2784 | return 1; | |
2785 | } | |
2786 | } break; | |
eb769f74 DB |
2787 | case OPTION_IMAGE_OPTS: |
2788 | image_opts = true; | |
2789 | break; | |
4c93a13b PB |
2790 | } |
2791 | } | |
ac1307ab FZ |
2792 | if (optind != argc - 1) { |
2793 | error_exit("Expecting one image file name"); | |
4c93a13b | 2794 | } |
ac1307ab | 2795 | filename = argv[optind]; |
4c93a13b PB |
2796 | |
2797 | if (output && !strcmp(output, "json")) { | |
2798 | output_format = OFORMAT_JSON; | |
2799 | } else if (output && !strcmp(output, "human")) { | |
2800 | output_format = OFORMAT_HUMAN; | |
2801 | } else if (output) { | |
2802 | error_report("--output must be used with human or json as argument."); | |
2803 | return 1; | |
2804 | } | |
2805 | ||
3babeb15 DB |
2806 | if (qemu_opts_foreach(&qemu_object_opts, |
2807 | user_creatable_add_opts_foreach, | |
51b9b478 | 2808 | NULL, NULL)) { |
3babeb15 DB |
2809 | return 1; |
2810 | } | |
2811 | ||
335e9937 | 2812 | blk = img_open(image_opts, filename, fmt, 0, false, false, force_share); |
7e7d56d9 MA |
2813 | if (!blk) { |
2814 | return 1; | |
4c93a13b | 2815 | } |
7e7d56d9 | 2816 | bs = blk_bs(blk); |
4c93a13b PB |
2817 | |
2818 | if (output_format == OFORMAT_HUMAN) { | |
2819 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2820 | } | |
2821 | ||
f1d3cd79 | 2822 | length = blk_getlength(blk); |
4c93a13b | 2823 | while (curr.start + curr.length < length) { |
5e344dd8 EB |
2824 | int64_t offset = curr.start + curr.length; |
2825 | int64_t n; | |
4c93a13b PB |
2826 | |
2827 | /* Probe up to 1 GiB at a time. */ | |
5e344dd8 EB |
2828 | n = QEMU_ALIGN_DOWN(MIN(1 << 30, length - offset), BDRV_SECTOR_SIZE); |
2829 | ret = get_block_status(bs, offset, n, &next); | |
4c93a13b PB |
2830 | |
2831 | if (ret < 0) { | |
2832 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2833 | goto out; | |
2834 | } | |
2835 | ||
16b0d555 | 2836 | if (entry_mergeable(&curr, &next)) { |
4c93a13b PB |
2837 | curr.length += next.length; |
2838 | continue; | |
2839 | } | |
2840 | ||
2841 | if (curr.length > 0) { | |
2842 | dump_map_entry(output_format, &curr, &next); | |
2843 | } | |
2844 | curr = next; | |
2845 | } | |
2846 | ||
2847 | dump_map_entry(output_format, &curr, NULL); | |
2848 | ||
2849 | out: | |
26f54e9a | 2850 | blk_unref(blk); |
4c93a13b PB |
2851 | return ret < 0; |
2852 | } | |
2853 | ||
f7b4a940 AL |
2854 | #define SNAPSHOT_LIST 1 |
2855 | #define SNAPSHOT_CREATE 2 | |
2856 | #define SNAPSHOT_APPLY 3 | |
2857 | #define SNAPSHOT_DELETE 4 | |
2858 | ||
153859be | 2859 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 2860 | { |
26f54e9a | 2861 | BlockBackend *blk; |
f7b4a940 AL |
2862 | BlockDriverState *bs; |
2863 | QEMUSnapshotInfo sn; | |
2864 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2865 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2866 | int action = 0; |
2867 | qemu_timeval tv; | |
f382d43a | 2868 | bool quiet = false; |
a89d89d3 | 2869 | Error *err = NULL; |
eb769f74 | 2870 | bool image_opts = false; |
335e9937 | 2871 | bool force_share = false; |
f7b4a940 | 2872 | |
ce099547 | 2873 | bdrv_oflags = BDRV_O_RDWR; |
f7b4a940 AL |
2874 | /* Parse commandline parameters */ |
2875 | for(;;) { | |
3babeb15 DB |
2876 | static const struct option long_options[] = { |
2877 | {"help", no_argument, 0, 'h'}, | |
2878 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2879 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 2880 | {"force-share", no_argument, 0, 'U'}, |
3babeb15 DB |
2881 | {0, 0, 0, 0} |
2882 | }; | |
335e9937 | 2883 | c = getopt_long(argc, argv, ":la:c:d:hqU", |
3babeb15 | 2884 | long_options, NULL); |
b8fb60da | 2885 | if (c == -1) { |
f7b4a940 | 2886 | break; |
b8fb60da | 2887 | } |
f7b4a940 | 2888 | switch(c) { |
c9192973 SH |
2889 | case ':': |
2890 | missing_argument(argv[optind - 1]); | |
2891 | break; | |
ef87394c | 2892 | case '?': |
c9192973 SH |
2893 | unrecognized_option(argv[optind - 1]); |
2894 | break; | |
f7b4a940 AL |
2895 | case 'h': |
2896 | help(); | |
153859be | 2897 | return 0; |
f7b4a940 AL |
2898 | case 'l': |
2899 | if (action) { | |
ac1307ab | 2900 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2901 | return 0; |
f7b4a940 AL |
2902 | } |
2903 | action = SNAPSHOT_LIST; | |
f5edb014 | 2904 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2905 | break; |
2906 | case 'a': | |
2907 | if (action) { | |
ac1307ab | 2908 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2909 | return 0; |
f7b4a940 AL |
2910 | } |
2911 | action = SNAPSHOT_APPLY; | |
2912 | snapshot_name = optarg; | |
2913 | break; | |
2914 | case 'c': | |
2915 | if (action) { | |
ac1307ab | 2916 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2917 | return 0; |
f7b4a940 AL |
2918 | } |
2919 | action = SNAPSHOT_CREATE; | |
2920 | snapshot_name = optarg; | |
2921 | break; | |
2922 | case 'd': | |
2923 | if (action) { | |
ac1307ab | 2924 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2925 | return 0; |
f7b4a940 AL |
2926 | } |
2927 | action = SNAPSHOT_DELETE; | |
2928 | snapshot_name = optarg; | |
2929 | break; | |
f382d43a MR |
2930 | case 'q': |
2931 | quiet = true; | |
2932 | break; | |
335e9937 FZ |
2933 | case 'U': |
2934 | force_share = true; | |
2935 | break; | |
3babeb15 DB |
2936 | case OPTION_OBJECT: { |
2937 | QemuOpts *opts; | |
2938 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2939 | optarg, true); | |
2940 | if (!opts) { | |
2941 | return 1; | |
2942 | } | |
2943 | } break; | |
eb769f74 DB |
2944 | case OPTION_IMAGE_OPTS: |
2945 | image_opts = true; | |
2946 | break; | |
f7b4a940 AL |
2947 | } |
2948 | } | |
2949 | ||
fc11eb26 | 2950 | if (optind != argc - 1) { |
ac1307ab | 2951 | error_exit("Expecting one image file name"); |
b8fb60da | 2952 | } |
f7b4a940 AL |
2953 | filename = argv[optind++]; |
2954 | ||
3babeb15 DB |
2955 | if (qemu_opts_foreach(&qemu_object_opts, |
2956 | user_creatable_add_opts_foreach, | |
51b9b478 | 2957 | NULL, NULL)) { |
3babeb15 DB |
2958 | return 1; |
2959 | } | |
2960 | ||
f7b4a940 | 2961 | /* Open the image */ |
335e9937 FZ |
2962 | blk = img_open(image_opts, filename, NULL, bdrv_oflags, false, quiet, |
2963 | force_share); | |
7e7d56d9 MA |
2964 | if (!blk) { |
2965 | return 1; | |
c2abccec | 2966 | } |
7e7d56d9 | 2967 | bs = blk_bs(blk); |
f7b4a940 AL |
2968 | |
2969 | /* Perform the requested action */ | |
2970 | switch(action) { | |
2971 | case SNAPSHOT_LIST: | |
2972 | dump_snapshots(bs); | |
2973 | break; | |
2974 | ||
2975 | case SNAPSHOT_CREATE: | |
2976 | memset(&sn, 0, sizeof(sn)); | |
2977 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2978 | ||
2979 | qemu_gettimeofday(&tv); | |
2980 | sn.date_sec = tv.tv_sec; | |
2981 | sn.date_nsec = tv.tv_usec * 1000; | |
2982 | ||
2983 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2984 | if (ret) { |
15654a6d | 2985 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2986 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2987 | } |
f7b4a940 AL |
2988 | break; |
2989 | ||
2990 | case SNAPSHOT_APPLY: | |
0b62bcbc | 2991 | ret = bdrv_snapshot_goto(bs, snapshot_name, &err); |
b8fb60da | 2992 | if (ret) { |
0b62bcbc KW |
2993 | error_reportf_err(err, "Could not apply snapshot '%s': ", |
2994 | snapshot_name); | |
b8fb60da | 2995 | } |
f7b4a940 AL |
2996 | break; |
2997 | ||
2998 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2999 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 3000 | if (err) { |
c29b77f9 MA |
3001 | error_reportf_err(err, "Could not delete snapshot '%s': ", |
3002 | snapshot_name); | |
a89d89d3 | 3003 | ret = 1; |
b8fb60da | 3004 | } |
f7b4a940 AL |
3005 | break; |
3006 | } | |
3007 | ||
3008 | /* Cleanup */ | |
26f54e9a | 3009 | blk_unref(blk); |
c2abccec MK |
3010 | if (ret) { |
3011 | return 1; | |
3012 | } | |
153859be | 3013 | return 0; |
f7b4a940 AL |
3014 | } |
3015 | ||
3e85c6fd KW |
3016 | static int img_rebase(int argc, char **argv) |
3017 | { | |
26f54e9a | 3018 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
396374ca PB |
3019 | uint8_t *buf_old = NULL; |
3020 | uint8_t *buf_new = NULL; | |
f1d3cd79 | 3021 | BlockDriverState *bs = NULL; |
3e85c6fd | 3022 | char *filename; |
40055951 HR |
3023 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
3024 | int c, flags, src_flags, ret; | |
ce099547 | 3025 | bool writethrough, src_writethrough; |
3e85c6fd | 3026 | int unsafe = 0; |
335e9937 | 3027 | bool force_share = false; |
6b837bc4 | 3028 | int progress = 0; |
f382d43a | 3029 | bool quiet = false; |
34b5d2c6 | 3030 | Error *local_err = NULL; |
eb769f74 | 3031 | bool image_opts = false; |
3e85c6fd KW |
3032 | |
3033 | /* Parse commandline parameters */ | |
e53dbee0 | 3034 | fmt = NULL; |
661a0f71 | 3035 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 3036 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
3037 | out_baseimg = NULL; |
3038 | out_basefmt = NULL; | |
3e85c6fd | 3039 | for(;;) { |
3babeb15 DB |
3040 | static const struct option long_options[] = { |
3041 | {"help", no_argument, 0, 'h'}, | |
3042 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3043 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 3044 | {"force-share", no_argument, 0, 'U'}, |
3babeb15 DB |
3045 | {0, 0, 0, 0} |
3046 | }; | |
335e9937 | 3047 | c = getopt_long(argc, argv, ":hf:F:b:upt:T:qU", |
3babeb15 | 3048 | long_options, NULL); |
b8fb60da | 3049 | if (c == -1) { |
3e85c6fd | 3050 | break; |
b8fb60da | 3051 | } |
3e85c6fd | 3052 | switch(c) { |
c9192973 SH |
3053 | case ':': |
3054 | missing_argument(argv[optind - 1]); | |
3055 | break; | |
ef87394c | 3056 | case '?': |
c9192973 SH |
3057 | unrecognized_option(argv[optind - 1]); |
3058 | break; | |
3e85c6fd KW |
3059 | case 'h': |
3060 | help(); | |
3061 | return 0; | |
e53dbee0 KW |
3062 | case 'f': |
3063 | fmt = optarg; | |
3064 | break; | |
3e85c6fd KW |
3065 | case 'F': |
3066 | out_basefmt = optarg; | |
3067 | break; | |
3068 | case 'b': | |
3069 | out_baseimg = optarg; | |
3070 | break; | |
3071 | case 'u': | |
3072 | unsafe = 1; | |
3073 | break; | |
6b837bc4 JS |
3074 | case 'p': |
3075 | progress = 1; | |
3076 | break; | |
661a0f71 FS |
3077 | case 't': |
3078 | cache = optarg; | |
3079 | break; | |
40055951 HR |
3080 | case 'T': |
3081 | src_cache = optarg; | |
3082 | break; | |
f382d43a MR |
3083 | case 'q': |
3084 | quiet = true; | |
3085 | break; | |
3babeb15 DB |
3086 | case OPTION_OBJECT: { |
3087 | QemuOpts *opts; | |
3088 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3089 | optarg, true); | |
3090 | if (!opts) { | |
3091 | return 1; | |
3092 | } | |
3093 | } break; | |
eb769f74 DB |
3094 | case OPTION_IMAGE_OPTS: |
3095 | image_opts = true; | |
3096 | break; | |
335e9937 FZ |
3097 | case 'U': |
3098 | force_share = true; | |
3099 | break; | |
3e85c6fd KW |
3100 | } |
3101 | } | |
3102 | ||
f382d43a MR |
3103 | if (quiet) { |
3104 | progress = 0; | |
3105 | } | |
3106 | ||
ac1307ab FZ |
3107 | if (optind != argc - 1) { |
3108 | error_exit("Expecting one image file name"); | |
3109 | } | |
3110 | if (!unsafe && !out_baseimg) { | |
3111 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 3112 | } |
3e85c6fd KW |
3113 | filename = argv[optind++]; |
3114 | ||
3babeb15 DB |
3115 | if (qemu_opts_foreach(&qemu_object_opts, |
3116 | user_creatable_add_opts_foreach, | |
51b9b478 | 3117 | NULL, NULL)) { |
3babeb15 DB |
3118 | return 1; |
3119 | } | |
3120 | ||
6b837bc4 JS |
3121 | qemu_progress_init(progress, 2.0); |
3122 | qemu_progress_print(0, 100); | |
3123 | ||
661a0f71 | 3124 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
ce099547 | 3125 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
3126 | if (ret < 0) { |
3127 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 3128 | goto out; |
661a0f71 FS |
3129 | } |
3130 | ||
ce099547 KW |
3131 | src_flags = 0; |
3132 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
3133 | if (ret < 0) { |
3134 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 3135 | goto out; |
40055951 HR |
3136 | } |
3137 | ||
ce099547 KW |
3138 | /* The source files are opened read-only, don't care about WCE */ |
3139 | assert((src_flags & BDRV_O_RDWR) == 0); | |
3140 | (void) src_writethrough; | |
3141 | ||
3e85c6fd KW |
3142 | /* |
3143 | * Open the images. | |
3144 | * | |
3145 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
3146 | * the reference to a renamed or moved backing file. | |
3147 | */ | |
335e9937 FZ |
3148 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
3149 | false); | |
7e7d56d9 | 3150 | if (!blk) { |
40ed35a3 SH |
3151 | ret = -1; |
3152 | goto out; | |
c2abccec | 3153 | } |
7e7d56d9 | 3154 | bs = blk_bs(blk); |
3e85c6fd | 3155 | |
3e85c6fd | 3156 | if (out_basefmt != NULL) { |
644483d9 | 3157 | if (bdrv_find_format(out_basefmt) == NULL) { |
15654a6d | 3158 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
3159 | ret = -1; |
3160 | goto out; | |
3e85c6fd KW |
3161 | } |
3162 | } | |
3163 | ||
3164 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 3165 | if (!unsafe) { |
9a29e18f | 3166 | char backing_name[PATH_MAX]; |
644483d9 HR |
3167 | QDict *options = NULL; |
3168 | ||
3169 | if (bs->backing_format[0] != '\0') { | |
3170 | options = qdict_new(); | |
46f5ac20 | 3171 | qdict_put_str(options, "driver", bs->backing_format); |
644483d9 | 3172 | } |
3e85c6fd | 3173 | |
335e9937 FZ |
3174 | if (force_share) { |
3175 | if (!options) { | |
3176 | options = qdict_new(); | |
3177 | } | |
579cf1d1 | 3178 | qdict_put_bool(options, BDRV_OPT_FORCE_SHARE, true); |
335e9937 | 3179 | } |
3e85c6fd | 3180 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
efaa7c4e | 3181 | blk_old_backing = blk_new_open(backing_name, NULL, |
644483d9 HR |
3182 | options, src_flags, &local_err); |
3183 | if (!blk_old_backing) { | |
c29b77f9 MA |
3184 | error_reportf_err(local_err, |
3185 | "Could not open old backing file '%s': ", | |
3186 | backing_name); | |
e84a0dd5 | 3187 | ret = -1; |
c2abccec | 3188 | goto out; |
3e85c6fd | 3189 | } |
644483d9 | 3190 | |
a616673d | 3191 | if (out_baseimg[0]) { |
335e9937 | 3192 | options = qdict_new(); |
644483d9 | 3193 | if (out_basefmt) { |
46f5ac20 | 3194 | qdict_put_str(options, "driver", out_basefmt); |
335e9937 FZ |
3195 | } |
3196 | if (force_share) { | |
3197 | qdict_put_bool(options, BDRV_OPT_FORCE_SHARE, true); | |
644483d9 HR |
3198 | } |
3199 | ||
efaa7c4e | 3200 | blk_new_backing = blk_new_open(out_baseimg, NULL, |
644483d9 HR |
3201 | options, src_flags, &local_err); |
3202 | if (!blk_new_backing) { | |
c29b77f9 MA |
3203 | error_reportf_err(local_err, |
3204 | "Could not open new backing file '%s': ", | |
3205 | out_baseimg); | |
e84a0dd5 | 3206 | ret = -1; |
a616673d AB |
3207 | goto out; |
3208 | } | |
3e85c6fd KW |
3209 | } |
3210 | } | |
3211 | ||
3212 | /* | |
3213 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
3214 | * accesses go to the backing file. We must therefore compare this cluster | |
3215 | * in the old and new backing file, and if they differ we need to copy it | |
3216 | * from the old backing file into the COW file. | |
3217 | * | |
3218 | * If qemu-img crashes during this step, no harm is done. The content of | |
3219 | * the image is the same as the original one at any time. | |
3220 | */ | |
3221 | if (!unsafe) { | |
41536287 EB |
3222 | int64_t size; |
3223 | int64_t old_backing_size; | |
3224 | int64_t new_backing_size = 0; | |
3225 | uint64_t offset; | |
3226 | int64_t n; | |
1f710495 | 3227 | float local_progress = 0; |
d6771bfa | 3228 | |
f1d3cd79 HR |
3229 | buf_old = blk_blockalign(blk, IO_BUF_SIZE); |
3230 | buf_new = blk_blockalign(blk, IO_BUF_SIZE); | |
3e85c6fd | 3231 | |
41536287 EB |
3232 | size = blk_getlength(blk); |
3233 | if (size < 0) { | |
52bf1e72 | 3234 | error_report("Could not get size of '%s': %s", |
41536287 | 3235 | filename, strerror(-size)); |
52bf1e72 MA |
3236 | ret = -1; |
3237 | goto out; | |
3238 | } | |
41536287 EB |
3239 | old_backing_size = blk_getlength(blk_old_backing); |
3240 | if (old_backing_size < 0) { | |
9a29e18f | 3241 | char backing_name[PATH_MAX]; |
52bf1e72 MA |
3242 | |
3243 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
3244 | error_report("Could not get size of '%s': %s", | |
41536287 | 3245 | backing_name, strerror(-old_backing_size)); |
52bf1e72 MA |
3246 | ret = -1; |
3247 | goto out; | |
3248 | } | |
f1d3cd79 | 3249 | if (blk_new_backing) { |
41536287 EB |
3250 | new_backing_size = blk_getlength(blk_new_backing); |
3251 | if (new_backing_size < 0) { | |
52bf1e72 | 3252 | error_report("Could not get size of '%s': %s", |
41536287 | 3253 | out_baseimg, strerror(-new_backing_size)); |
52bf1e72 MA |
3254 | ret = -1; |
3255 | goto out; | |
3256 | } | |
a616673d | 3257 | } |
3e85c6fd | 3258 | |
41536287 EB |
3259 | if (size != 0) { |
3260 | local_progress = (float)100 / (size / MIN(size, IO_BUF_SIZE)); | |
1f710495 KW |
3261 | } |
3262 | ||
41536287 EB |
3263 | for (offset = 0; offset < size; offset += n) { |
3264 | /* How many bytes can we handle with the next read? */ | |
3265 | n = MIN(IO_BUF_SIZE, size - offset); | |
3e85c6fd KW |
3266 | |
3267 | /* If the cluster is allocated, we don't need to take action */ | |
41536287 | 3268 | ret = bdrv_is_allocated(bs, offset, n, &n); |
d663640c PB |
3269 | if (ret < 0) { |
3270 | error_report("error while reading image metadata: %s", | |
3271 | strerror(-ret)); | |
3272 | goto out; | |
3273 | } | |
cc60e327 | 3274 | if (ret) { |
3e85c6fd KW |
3275 | continue; |
3276 | } | |
3277 | ||
87a1b3e3 KW |
3278 | /* |
3279 | * Read old and new backing file and take into consideration that | |
3280 | * backing files may be smaller than the COW image. | |
3281 | */ | |
41536287 EB |
3282 | if (offset >= old_backing_size) { |
3283 | memset(buf_old, 0, n); | |
87a1b3e3 | 3284 | } else { |
41536287 EB |
3285 | if (offset + n > old_backing_size) { |
3286 | n = old_backing_size - offset; | |
87a1b3e3 KW |
3287 | } |
3288 | ||
41536287 | 3289 | ret = blk_pread(blk_old_backing, offset, buf_old, n); |
87a1b3e3 KW |
3290 | if (ret < 0) { |
3291 | error_report("error while reading from old backing file"); | |
3292 | goto out; | |
3293 | } | |
3e85c6fd | 3294 | } |
87a1b3e3 | 3295 | |
41536287 EB |
3296 | if (offset >= new_backing_size || !blk_new_backing) { |
3297 | memset(buf_new, 0, n); | |
87a1b3e3 | 3298 | } else { |
41536287 EB |
3299 | if (offset + n > new_backing_size) { |
3300 | n = new_backing_size - offset; | |
87a1b3e3 KW |
3301 | } |
3302 | ||
41536287 | 3303 | ret = blk_pread(blk_new_backing, offset, buf_new, n); |
87a1b3e3 KW |
3304 | if (ret < 0) { |
3305 | error_report("error while reading from new backing file"); | |
3306 | goto out; | |
3307 | } | |
3e85c6fd KW |
3308 | } |
3309 | ||
3310 | /* If they differ, we need to write to the COW file */ | |
3311 | uint64_t written = 0; | |
3312 | ||
41536287 | 3313 | while (written < n) { |
dc61cd3b | 3314 | int64_t pnum; |
3e85c6fd | 3315 | |
41536287 EB |
3316 | if (compare_buffers(buf_old + written, buf_new + written, |
3317 | n - written, &pnum)) | |
3e85c6fd | 3318 | { |
41536287 | 3319 | ret = blk_pwrite(blk, offset + written, |
dc61cd3b | 3320 | buf_old + written, pnum, 0); |
3e85c6fd | 3321 | if (ret < 0) { |
15654a6d | 3322 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 3323 | strerror(-ret)); |
c2abccec | 3324 | goto out; |
3e85c6fd KW |
3325 | } |
3326 | } | |
3327 | ||
3328 | written += pnum; | |
3329 | } | |
6b837bc4 | 3330 | qemu_progress_print(local_progress, 100); |
3e85c6fd KW |
3331 | } |
3332 | } | |
3333 | ||
3334 | /* | |
3335 | * Change the backing file. All clusters that are different from the old | |
3336 | * backing file are overwritten in the COW file now, so the visible content | |
3337 | * doesn't change when we switch the backing file. | |
3338 | */ | |
a616673d AB |
3339 | if (out_baseimg && *out_baseimg) { |
3340 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
3341 | } else { | |
3342 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
3343 | } | |
3344 | ||
3e85c6fd | 3345 | if (ret == -ENOSPC) { |
15654a6d JS |
3346 | error_report("Could not change the backing file to '%s': No " |
3347 | "space left in the file header", out_baseimg); | |
3e85c6fd | 3348 | } else if (ret < 0) { |
15654a6d | 3349 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
3350 | out_baseimg, strerror(-ret)); |
3351 | } | |
3352 | ||
6b837bc4 | 3353 | qemu_progress_print(100, 0); |
3e85c6fd KW |
3354 | /* |
3355 | * TODO At this point it is possible to check if any clusters that are | |
3356 | * allocated in the COW file are the same in the backing file. If so, they | |
3357 | * could be dropped from the COW file. Don't do this before switching the | |
3358 | * backing file, in case of a crash this would lead to corruption. | |
3359 | */ | |
c2abccec | 3360 | out: |
6b837bc4 | 3361 | qemu_progress_end(); |
3e85c6fd KW |
3362 | /* Cleanup */ |
3363 | if (!unsafe) { | |
26f54e9a | 3364 | blk_unref(blk_old_backing); |
26f54e9a | 3365 | blk_unref(blk_new_backing); |
3e85c6fd | 3366 | } |
396374ca PB |
3367 | qemu_vfree(buf_old); |
3368 | qemu_vfree(buf_new); | |
3e85c6fd | 3369 | |
26f54e9a | 3370 | blk_unref(blk); |
c2abccec MK |
3371 | if (ret) { |
3372 | return 1; | |
3373 | } | |
3e85c6fd KW |
3374 | return 0; |
3375 | } | |
3376 | ||
ae6b0ed6 SH |
3377 | static int img_resize(int argc, char **argv) |
3378 | { | |
6750e795 | 3379 | Error *err = NULL; |
ae6b0ed6 SH |
3380 | int c, ret, relative; |
3381 | const char *filename, *fmt, *size; | |
dc5f690b | 3382 | int64_t n, total_size, current_size; |
f382d43a | 3383 | bool quiet = false; |
26f54e9a | 3384 | BlockBackend *blk = NULL; |
dc5f690b | 3385 | PreallocMode prealloc = PREALLOC_MODE_OFF; |
20caf0f7 | 3386 | QemuOpts *param; |
3babeb15 | 3387 | |
20caf0f7 DXW |
3388 | static QemuOptsList resize_options = { |
3389 | .name = "resize_options", | |
3390 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
3391 | .desc = { | |
3392 | { | |
3393 | .name = BLOCK_OPT_SIZE, | |
3394 | .type = QEMU_OPT_SIZE, | |
3395 | .help = "Virtual disk size" | |
3396 | }, { | |
3397 | /* end of list */ | |
3398 | } | |
ae6b0ed6 | 3399 | }, |
ae6b0ed6 | 3400 | }; |
eb769f74 | 3401 | bool image_opts = false; |
4ffca890 | 3402 | bool shrink = false; |
ae6b0ed6 | 3403 | |
e80fec7f KW |
3404 | /* Remove size from argv manually so that negative numbers are not treated |
3405 | * as options by getopt. */ | |
3406 | if (argc < 3) { | |
ac1307ab | 3407 | error_exit("Not enough arguments"); |
e80fec7f KW |
3408 | return 1; |
3409 | } | |
3410 | ||
3411 | size = argv[--argc]; | |
3412 | ||
3413 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
3414 | fmt = NULL; |
3415 | for(;;) { | |
3babeb15 DB |
3416 | static const struct option long_options[] = { |
3417 | {"help", no_argument, 0, 'h'}, | |
3418 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3419 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
dc5f690b | 3420 | {"preallocation", required_argument, 0, OPTION_PREALLOCATION}, |
4ffca890 | 3421 | {"shrink", no_argument, 0, OPTION_SHRINK}, |
3babeb15 DB |
3422 | {0, 0, 0, 0} |
3423 | }; | |
c9192973 | 3424 | c = getopt_long(argc, argv, ":f:hq", |
3babeb15 | 3425 | long_options, NULL); |
ae6b0ed6 SH |
3426 | if (c == -1) { |
3427 | break; | |
3428 | } | |
3429 | switch(c) { | |
c9192973 SH |
3430 | case ':': |
3431 | missing_argument(argv[optind - 1]); | |
3432 | break; | |
ef87394c | 3433 | case '?': |
c9192973 SH |
3434 | unrecognized_option(argv[optind - 1]); |
3435 | break; | |
ae6b0ed6 SH |
3436 | case 'h': |
3437 | help(); | |
3438 | break; | |
3439 | case 'f': | |
3440 | fmt = optarg; | |
3441 | break; | |
f382d43a MR |
3442 | case 'q': |
3443 | quiet = true; | |
3444 | break; | |
3babeb15 DB |
3445 | case OPTION_OBJECT: { |
3446 | QemuOpts *opts; | |
3447 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3448 | optarg, true); | |
3449 | if (!opts) { | |
3450 | return 1; | |
3451 | } | |
3452 | } break; | |
eb769f74 DB |
3453 | case OPTION_IMAGE_OPTS: |
3454 | image_opts = true; | |
3455 | break; | |
dc5f690b | 3456 | case OPTION_PREALLOCATION: |
f7abe0ec | 3457 | prealloc = qapi_enum_parse(&PreallocMode_lookup, optarg, |
06c60b6c | 3458 | PREALLOC_MODE__MAX, NULL); |
dc5f690b HR |
3459 | if (prealloc == PREALLOC_MODE__MAX) { |
3460 | error_report("Invalid preallocation mode '%s'", optarg); | |
3461 | return 1; | |
3462 | } | |
3463 | break; | |
4ffca890 PB |
3464 | case OPTION_SHRINK: |
3465 | shrink = true; | |
3466 | break; | |
ae6b0ed6 SH |
3467 | } |
3468 | } | |
fc11eb26 | 3469 | if (optind != argc - 1) { |
ac1307ab | 3470 | error_exit("Expecting one image file name"); |
ae6b0ed6 SH |
3471 | } |
3472 | filename = argv[optind++]; | |
ae6b0ed6 | 3473 | |
3babeb15 DB |
3474 | if (qemu_opts_foreach(&qemu_object_opts, |
3475 | user_creatable_add_opts_foreach, | |
51b9b478 | 3476 | NULL, NULL)) { |
3babeb15 DB |
3477 | return 1; |
3478 | } | |
3479 | ||
ae6b0ed6 SH |
3480 | /* Choose grow, shrink, or absolute resize mode */ |
3481 | switch (size[0]) { | |
3482 | case '+': | |
3483 | relative = 1; | |
3484 | size++; | |
3485 | break; | |
3486 | case '-': | |
3487 | relative = -1; | |
3488 | size++; | |
3489 | break; | |
3490 | default: | |
3491 | relative = 0; | |
3492 | break; | |
3493 | } | |
3494 | ||
3495 | /* Parse size */ | |
87ea75d5 | 3496 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
f43e47db | 3497 | qemu_opt_set(param, BLOCK_OPT_SIZE, size, &err); |
6750e795 MA |
3498 | if (err) { |
3499 | error_report_err(err); | |
2a81998a | 3500 | ret = -1; |
20caf0f7 | 3501 | qemu_opts_del(param); |
2a81998a | 3502 | goto out; |
ae6b0ed6 | 3503 | } |
20caf0f7 DXW |
3504 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
3505 | qemu_opts_del(param); | |
ae6b0ed6 | 3506 | |
efaa7c4e | 3507 | blk = img_open(image_opts, filename, fmt, |
335e9937 FZ |
3508 | BDRV_O_RDWR | BDRV_O_RESIZE, false, quiet, |
3509 | false); | |
7e7d56d9 | 3510 | if (!blk) { |
2a81998a JS |
3511 | ret = -1; |
3512 | goto out; | |
c2abccec | 3513 | } |
ae6b0ed6 | 3514 | |
dc5f690b HR |
3515 | current_size = blk_getlength(blk); |
3516 | if (current_size < 0) { | |
3517 | error_report("Failed to inquire current image length: %s", | |
3518 | strerror(-current_size)); | |
3519 | ret = -1; | |
3520 | goto out; | |
3521 | } | |
3522 | ||
ae6b0ed6 | 3523 | if (relative) { |
dc5f690b | 3524 | total_size = current_size + n * relative; |
ae6b0ed6 SH |
3525 | } else { |
3526 | total_size = n; | |
3527 | } | |
3528 | if (total_size <= 0) { | |
15654a6d | 3529 | error_report("New image size must be positive"); |
c2abccec MK |
3530 | ret = -1; |
3531 | goto out; | |
ae6b0ed6 SH |
3532 | } |
3533 | ||
dc5f690b HR |
3534 | if (total_size <= current_size && prealloc != PREALLOC_MODE_OFF) { |
3535 | error_report("Preallocation can only be used for growing images"); | |
3536 | ret = -1; | |
3537 | goto out; | |
3538 | } | |
3539 | ||
4ffca890 PB |
3540 | if (total_size < current_size && !shrink) { |
3541 | warn_report("Shrinking an image will delete all data beyond the " | |
3542 | "shrunken image's end. Before performing such an " | |
3543 | "operation, make sure there is no important data there."); | |
3544 | ||
3545 | if (g_strcmp0(bdrv_get_format_name(blk_bs(blk)), "raw") != 0) { | |
3546 | error_report( | |
3547 | "Use the --shrink option to perform a shrink operation."); | |
3548 | ret = -1; | |
3549 | goto out; | |
3550 | } else { | |
3551 | warn_report("Using the --shrink option will suppress this message. " | |
3552 | "Note that future versions of qemu-img may refuse to " | |
3553 | "shrink images without this option."); | |
3554 | } | |
3555 | } | |
3556 | ||
dc5f690b | 3557 | ret = blk_truncate(blk, total_size, prealloc, &err); |
ed3d2ec9 | 3558 | if (!ret) { |
f382d43a | 3559 | qprintf(quiet, "Image resized.\n"); |
ed3d2ec9 HR |
3560 | } else { |
3561 | error_report_err(err); | |
ae6b0ed6 | 3562 | } |
c2abccec | 3563 | out: |
26f54e9a | 3564 | blk_unref(blk); |
c2abccec MK |
3565 | if (ret) { |
3566 | return 1; | |
3567 | } | |
ae6b0ed6 SH |
3568 | return 0; |
3569 | } | |
3570 | ||
76a3a34d | 3571 | static void amend_status_cb(BlockDriverState *bs, |
8b13976d HR |
3572 | int64_t offset, int64_t total_work_size, |
3573 | void *opaque) | |
76a3a34d HR |
3574 | { |
3575 | qemu_progress_print(100.f * offset / total_work_size, 0); | |
3576 | } | |
3577 | ||
6f176b48 HR |
3578 | static int img_amend(int argc, char **argv) |
3579 | { | |
dc523cd3 | 3580 | Error *err = NULL; |
6f176b48 HR |
3581 | int c, ret = 0; |
3582 | char *options = NULL; | |
83d0521a CL |
3583 | QemuOptsList *create_opts = NULL; |
3584 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
3585 | const char *fmt = NULL, *filename, *cache; |
3586 | int flags; | |
ce099547 | 3587 | bool writethrough; |
76a3a34d | 3588 | bool quiet = false, progress = false; |
26f54e9a | 3589 | BlockBackend *blk = NULL; |
6f176b48 | 3590 | BlockDriverState *bs = NULL; |
eb769f74 | 3591 | bool image_opts = false; |
6f176b48 | 3592 | |
bd39e6ed | 3593 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 3594 | for (;;) { |
3babeb15 DB |
3595 | static const struct option long_options[] = { |
3596 | {"help", no_argument, 0, 'h'}, | |
3597 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3598 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3599 | {0, 0, 0, 0} |
3600 | }; | |
c9192973 | 3601 | c = getopt_long(argc, argv, ":ho:f:t:pq", |
3babeb15 | 3602 | long_options, NULL); |
6f176b48 HR |
3603 | if (c == -1) { |
3604 | break; | |
3605 | } | |
3606 | ||
3607 | switch (c) { | |
c9192973 SH |
3608 | case ':': |
3609 | missing_argument(argv[optind - 1]); | |
3610 | break; | |
f7077624 | 3611 | case '?': |
c9192973 SH |
3612 | unrecognized_option(argv[optind - 1]); |
3613 | break; | |
3614 | case 'h': | |
f7077624 SH |
3615 | help(); |
3616 | break; | |
3617 | case 'o': | |
3618 | if (!is_valid_option_list(optarg)) { | |
3619 | error_report("Invalid option list: %s", optarg); | |
3620 | ret = -1; | |
3621 | goto out_no_progress; | |
3622 | } | |
3623 | if (!options) { | |
3624 | options = g_strdup(optarg); | |
3625 | } else { | |
3626 | char *old_options = options; | |
3627 | options = g_strdup_printf("%s,%s", options, optarg); | |
3628 | g_free(old_options); | |
3629 | } | |
3630 | break; | |
3631 | case 'f': | |
3632 | fmt = optarg; | |
3633 | break; | |
3634 | case 't': | |
3635 | cache = optarg; | |
3636 | break; | |
3637 | case 'p': | |
3638 | progress = true; | |
3639 | break; | |
3640 | case 'q': | |
3641 | quiet = true; | |
3642 | break; | |
3643 | case OPTION_OBJECT: | |
3644 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3645 | optarg, true); | |
3646 | if (!opts) { | |
3647 | ret = -1; | |
3648 | goto out_no_progress; | |
3649 | } | |
3650 | break; | |
3651 | case OPTION_IMAGE_OPTS: | |
3652 | image_opts = true; | |
3653 | break; | |
6f176b48 HR |
3654 | } |
3655 | } | |
3656 | ||
a283cb6e | 3657 | if (!options) { |
ac1307ab | 3658 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
3659 | } |
3660 | ||
3babeb15 DB |
3661 | if (qemu_opts_foreach(&qemu_object_opts, |
3662 | user_creatable_add_opts_foreach, | |
51b9b478 | 3663 | NULL, NULL)) { |
3babeb15 DB |
3664 | ret = -1; |
3665 | goto out_no_progress; | |
3666 | } | |
3667 | ||
76a3a34d HR |
3668 | if (quiet) { |
3669 | progress = false; | |
3670 | } | |
3671 | qemu_progress_init(progress, 1.0); | |
3672 | ||
a283cb6e KW |
3673 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
3674 | if (fmt && has_help_option(options)) { | |
3675 | /* If a format is explicitly specified (and possibly no filename is | |
3676 | * given), print option help here */ | |
3677 | ret = print_block_option_help(filename, fmt); | |
3678 | goto out; | |
6f176b48 HR |
3679 | } |
3680 | ||
a283cb6e | 3681 | if (optind != argc - 1) { |
b2f27e44 HR |
3682 | error_report("Expecting one image file name"); |
3683 | ret = -1; | |
3684 | goto out; | |
a283cb6e | 3685 | } |
6f176b48 | 3686 | |
ce099547 KW |
3687 | flags = BDRV_O_RDWR; |
3688 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
bd39e6ed HR |
3689 | if (ret < 0) { |
3690 | error_report("Invalid cache option: %s", cache); | |
3691 | goto out; | |
3692 | } | |
3693 | ||
335e9937 FZ |
3694 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
3695 | false); | |
7e7d56d9 | 3696 | if (!blk) { |
6f176b48 HR |
3697 | ret = -1; |
3698 | goto out; | |
3699 | } | |
7e7d56d9 | 3700 | bs = blk_bs(blk); |
6f176b48 HR |
3701 | |
3702 | fmt = bs->drv->format_name; | |
3703 | ||
626f84f3 | 3704 | if (has_help_option(options)) { |
a283cb6e | 3705 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
3706 | ret = print_block_option_help(filename, fmt); |
3707 | goto out; | |
3708 | } | |
3709 | ||
b2439d26 HR |
3710 | if (!bs->drv->create_opts) { |
3711 | error_report("Format driver '%s' does not support any options to amend", | |
3712 | fmt); | |
3713 | ret = -1; | |
3714 | goto out; | |
3715 | } | |
3716 | ||
c282e1fd | 3717 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a | 3718 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
ece9086e PB |
3719 | qemu_opts_do_parse(opts, options, NULL, &err); |
3720 | if (err) { | |
3721 | error_report_err(err); | |
3722 | ret = -1; | |
3723 | goto out; | |
6f176b48 HR |
3724 | } |
3725 | ||
76a3a34d HR |
3726 | /* In case the driver does not call amend_status_cb() */ |
3727 | qemu_progress_print(0.f, 0); | |
8b13976d | 3728 | ret = bdrv_amend_options(bs, opts, &amend_status_cb, NULL); |
76a3a34d | 3729 | qemu_progress_print(100.f, 0); |
6f176b48 HR |
3730 | if (ret < 0) { |
3731 | error_report("Error while amending options: %s", strerror(-ret)); | |
3732 | goto out; | |
3733 | } | |
3734 | ||
3735 | out: | |
76a3a34d HR |
3736 | qemu_progress_end(); |
3737 | ||
e814dffc | 3738 | out_no_progress: |
26f54e9a | 3739 | blk_unref(blk); |
83d0521a CL |
3740 | qemu_opts_del(opts); |
3741 | qemu_opts_free(create_opts); | |
626f84f3 KW |
3742 | g_free(options); |
3743 | ||
6f176b48 HR |
3744 | if (ret) { |
3745 | return 1; | |
3746 | } | |
3747 | return 0; | |
3748 | } | |
3749 | ||
b6133b8c KW |
3750 | typedef struct BenchData { |
3751 | BlockBackend *blk; | |
3752 | uint64_t image_size; | |
b6495fa8 | 3753 | bool write; |
b6133b8c | 3754 | int bufsize; |
83de9be0 | 3755 | int step; |
b6133b8c KW |
3756 | int nrreq; |
3757 | int n; | |
55d539c8 KW |
3758 | int flush_interval; |
3759 | bool drain_on_flush; | |
b6133b8c KW |
3760 | uint8_t *buf; |
3761 | QEMUIOVector *qiov; | |
3762 | ||
3763 | int in_flight; | |
55d539c8 | 3764 | bool in_flush; |
b6133b8c KW |
3765 | uint64_t offset; |
3766 | } BenchData; | |
3767 | ||
55d539c8 KW |
3768 | static void bench_undrained_flush_cb(void *opaque, int ret) |
3769 | { | |
3770 | if (ret < 0) { | |
df3c286c | 3771 | error_report("Failed flush request: %s", strerror(-ret)); |
55d539c8 KW |
3772 | exit(EXIT_FAILURE); |
3773 | } | |
3774 | } | |
3775 | ||
b6133b8c KW |
3776 | static void bench_cb(void *opaque, int ret) |
3777 | { | |
3778 | BenchData *b = opaque; | |
3779 | BlockAIOCB *acb; | |
3780 | ||
3781 | if (ret < 0) { | |
df3c286c | 3782 | error_report("Failed request: %s", strerror(-ret)); |
b6133b8c KW |
3783 | exit(EXIT_FAILURE); |
3784 | } | |
55d539c8 KW |
3785 | |
3786 | if (b->in_flush) { | |
3787 | /* Just finished a flush with drained queue: Start next requests */ | |
3788 | assert(b->in_flight == 0); | |
3789 | b->in_flush = false; | |
3790 | } else if (b->in_flight > 0) { | |
3791 | int remaining = b->n - b->in_flight; | |
3792 | ||
b6133b8c KW |
3793 | b->n--; |
3794 | b->in_flight--; | |
55d539c8 KW |
3795 | |
3796 | /* Time for flush? Drain queue if requested, then flush */ | |
3797 | if (b->flush_interval && remaining % b->flush_interval == 0) { | |
3798 | if (!b->in_flight || !b->drain_on_flush) { | |
3799 | BlockCompletionFunc *cb; | |
3800 | ||
3801 | if (b->drain_on_flush) { | |
3802 | b->in_flush = true; | |
3803 | cb = bench_cb; | |
3804 | } else { | |
3805 | cb = bench_undrained_flush_cb; | |
3806 | } | |
3807 | ||
3808 | acb = blk_aio_flush(b->blk, cb, b); | |
3809 | if (!acb) { | |
3810 | error_report("Failed to issue flush request"); | |
3811 | exit(EXIT_FAILURE); | |
3812 | } | |
3813 | } | |
3814 | if (b->drain_on_flush) { | |
3815 | return; | |
3816 | } | |
3817 | } | |
b6133b8c KW |
3818 | } |
3819 | ||
3820 | while (b->n > b->in_flight && b->in_flight < b->nrreq) { | |
4baaa8c3 PB |
3821 | int64_t offset = b->offset; |
3822 | /* blk_aio_* might look for completed I/Os and kick bench_cb | |
3823 | * again, so make sure this operation is counted by in_flight | |
3824 | * and b->offset is ready for the next submission. | |
3825 | */ | |
3826 | b->in_flight++; | |
3827 | b->offset += b->step; | |
3828 | b->offset %= b->image_size; | |
b6495fa8 | 3829 | if (b->write) { |
4baaa8c3 | 3830 | acb = blk_aio_pwritev(b->blk, offset, b->qiov, 0, bench_cb, b); |
b6495fa8 | 3831 | } else { |
4baaa8c3 | 3832 | acb = blk_aio_preadv(b->blk, offset, b->qiov, 0, bench_cb, b); |
b6495fa8 | 3833 | } |
b6133b8c KW |
3834 | if (!acb) { |
3835 | error_report("Failed to issue request"); | |
3836 | exit(EXIT_FAILURE); | |
3837 | } | |
b6133b8c KW |
3838 | } |
3839 | } | |
3840 | ||
3841 | static int img_bench(int argc, char **argv) | |
3842 | { | |
3843 | int c, ret = 0; | |
3844 | const char *fmt = NULL, *filename; | |
3845 | bool quiet = false; | |
3846 | bool image_opts = false; | |
b6495fa8 | 3847 | bool is_write = false; |
b6133b8c KW |
3848 | int count = 75000; |
3849 | int depth = 64; | |
d3199a31 | 3850 | int64_t offset = 0; |
b6133b8c | 3851 | size_t bufsize = 4096; |
b6495fa8 | 3852 | int pattern = 0; |
83de9be0 | 3853 | size_t step = 0; |
55d539c8 KW |
3854 | int flush_interval = 0; |
3855 | bool drain_on_flush = true; | |
b6133b8c KW |
3856 | int64_t image_size; |
3857 | BlockBackend *blk = NULL; | |
3858 | BenchData data = {}; | |
3859 | int flags = 0; | |
604e8613 | 3860 | bool writethrough = false; |
b6133b8c KW |
3861 | struct timeval t1, t2; |
3862 | int i; | |
335e9937 | 3863 | bool force_share = false; |
79d46583 | 3864 | size_t buf_size; |
b6133b8c KW |
3865 | |
3866 | for (;;) { | |
3867 | static const struct option long_options[] = { | |
3868 | {"help", no_argument, 0, 'h'}, | |
55d539c8 | 3869 | {"flush-interval", required_argument, 0, OPTION_FLUSH_INTERVAL}, |
b6133b8c | 3870 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
b6495fa8 | 3871 | {"pattern", required_argument, 0, OPTION_PATTERN}, |
55d539c8 | 3872 | {"no-drain", no_argument, 0, OPTION_NO_DRAIN}, |
335e9937 | 3873 | {"force-share", no_argument, 0, 'U'}, |
b6133b8c KW |
3874 | {0, 0, 0, 0} |
3875 | }; | |
335e9937 | 3876 | c = getopt_long(argc, argv, ":hc:d:f:no:qs:S:t:wU", long_options, NULL); |
b6133b8c KW |
3877 | if (c == -1) { |
3878 | break; | |
3879 | } | |
3880 | ||
3881 | switch (c) { | |
c9192973 SH |
3882 | case ':': |
3883 | missing_argument(argv[optind - 1]); | |
3884 | break; | |
b6133b8c | 3885 | case '?': |
c9192973 SH |
3886 | unrecognized_option(argv[optind - 1]); |
3887 | break; | |
3888 | case 'h': | |
b6133b8c KW |
3889 | help(); |
3890 | break; | |
3891 | case 'c': | |
3892 | { | |
8b3c6792 PM |
3893 | unsigned long res; |
3894 | ||
3895 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
b6133b8c KW |
3896 | error_report("Invalid request count specified"); |
3897 | return 1; | |
3898 | } | |
8b3c6792 | 3899 | count = res; |
b6133b8c KW |
3900 | break; |
3901 | } | |
3902 | case 'd': | |
3903 | { | |
8b3c6792 PM |
3904 | unsigned long res; |
3905 | ||
3906 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
b6133b8c KW |
3907 | error_report("Invalid queue depth specified"); |
3908 | return 1; | |
3909 | } | |
8b3c6792 | 3910 | depth = res; |
b6133b8c KW |
3911 | break; |
3912 | } | |
3913 | case 'f': | |
3914 | fmt = optarg; | |
3915 | break; | |
3916 | case 'n': | |
3917 | flags |= BDRV_O_NATIVE_AIO; | |
3918 | break; | |
d3199a31 KW |
3919 | case 'o': |
3920 | { | |
606caa0a MA |
3921 | offset = cvtnum(optarg); |
3922 | if (offset < 0) { | |
d3199a31 KW |
3923 | error_report("Invalid offset specified"); |
3924 | return 1; | |
3925 | } | |
3926 | break; | |
3927 | } | |
3928 | break; | |
b6133b8c KW |
3929 | case 'q': |
3930 | quiet = true; | |
3931 | break; | |
3932 | case 's': | |
3933 | { | |
3934 | int64_t sval; | |
b6133b8c | 3935 | |
606caa0a MA |
3936 | sval = cvtnum(optarg); |
3937 | if (sval < 0 || sval > INT_MAX) { | |
b6133b8c KW |
3938 | error_report("Invalid buffer size specified"); |
3939 | return 1; | |
3940 | } | |
3941 | ||
3942 | bufsize = sval; | |
3943 | break; | |
3944 | } | |
83de9be0 KW |
3945 | case 'S': |
3946 | { | |
3947 | int64_t sval; | |
83de9be0 | 3948 | |
606caa0a MA |
3949 | sval = cvtnum(optarg); |
3950 | if (sval < 0 || sval > INT_MAX) { | |
83de9be0 KW |
3951 | error_report("Invalid step size specified"); |
3952 | return 1; | |
3953 | } | |
3954 | ||
3955 | step = sval; | |
3956 | break; | |
3957 | } | |
b6133b8c KW |
3958 | case 't': |
3959 | ret = bdrv_parse_cache_mode(optarg, &flags, &writethrough); | |
3960 | if (ret < 0) { | |
3961 | error_report("Invalid cache mode"); | |
3962 | ret = -1; | |
3963 | goto out; | |
3964 | } | |
3965 | break; | |
b6495fa8 KW |
3966 | case 'w': |
3967 | flags |= BDRV_O_RDWR; | |
3968 | is_write = true; | |
3969 | break; | |
335e9937 FZ |
3970 | case 'U': |
3971 | force_share = true; | |
3972 | break; | |
b6495fa8 KW |
3973 | case OPTION_PATTERN: |
3974 | { | |
8b3c6792 PM |
3975 | unsigned long res; |
3976 | ||
3977 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > 0xff) { | |
b6495fa8 KW |
3978 | error_report("Invalid pattern byte specified"); |
3979 | return 1; | |
3980 | } | |
8b3c6792 | 3981 | pattern = res; |
b6495fa8 KW |
3982 | break; |
3983 | } | |
55d539c8 KW |
3984 | case OPTION_FLUSH_INTERVAL: |
3985 | { | |
8b3c6792 PM |
3986 | unsigned long res; |
3987 | ||
3988 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
55d539c8 KW |
3989 | error_report("Invalid flush interval specified"); |
3990 | return 1; | |
3991 | } | |
8b3c6792 | 3992 | flush_interval = res; |
55d539c8 KW |
3993 | break; |
3994 | } | |
3995 | case OPTION_NO_DRAIN: | |
3996 | drain_on_flush = false; | |
3997 | break; | |
b6133b8c KW |
3998 | case OPTION_IMAGE_OPTS: |
3999 | image_opts = true; | |
4000 | break; | |
4001 | } | |
4002 | } | |
4003 | ||
4004 | if (optind != argc - 1) { | |
4005 | error_exit("Expecting one image file name"); | |
4006 | } | |
4007 | filename = argv[argc - 1]; | |
4008 | ||
55d539c8 KW |
4009 | if (!is_write && flush_interval) { |
4010 | error_report("--flush-interval is only available in write tests"); | |
4011 | ret = -1; | |
4012 | goto out; | |
4013 | } | |
4014 | if (flush_interval && flush_interval < depth) { | |
4015 | error_report("Flush interval can't be smaller than depth"); | |
4016 | ret = -1; | |
4017 | goto out; | |
4018 | } | |
4019 | ||
335e9937 FZ |
4020 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet, |
4021 | force_share); | |
b6133b8c KW |
4022 | if (!blk) { |
4023 | ret = -1; | |
4024 | goto out; | |
4025 | } | |
4026 | ||
4027 | image_size = blk_getlength(blk); | |
4028 | if (image_size < 0) { | |
4029 | ret = image_size; | |
4030 | goto out; | |
4031 | } | |
4032 | ||
4033 | data = (BenchData) { | |
55d539c8 KW |
4034 | .blk = blk, |
4035 | .image_size = image_size, | |
4036 | .bufsize = bufsize, | |
4037 | .step = step ?: bufsize, | |
4038 | .nrreq = depth, | |
4039 | .n = count, | |
4040 | .offset = offset, | |
4041 | .write = is_write, | |
4042 | .flush_interval = flush_interval, | |
4043 | .drain_on_flush = drain_on_flush, | |
b6133b8c | 4044 | }; |
d3199a31 | 4045 | printf("Sending %d %s requests, %d bytes each, %d in parallel " |
83de9be0 | 4046 | "(starting at offset %" PRId64 ", step size %d)\n", |
d3199a31 | 4047 | data.n, data.write ? "write" : "read", data.bufsize, data.nrreq, |
83de9be0 | 4048 | data.offset, data.step); |
55d539c8 KW |
4049 | if (flush_interval) { |
4050 | printf("Sending flush every %d requests\n", flush_interval); | |
4051 | } | |
b6133b8c | 4052 | |
79d46583 FZ |
4053 | buf_size = data.nrreq * data.bufsize; |
4054 | data.buf = blk_blockalign(blk, buf_size); | |
b6495fa8 KW |
4055 | memset(data.buf, pattern, data.nrreq * data.bufsize); |
4056 | ||
79d46583 FZ |
4057 | blk_register_buf(blk, data.buf, buf_size); |
4058 | ||
b6133b8c KW |
4059 | data.qiov = g_new(QEMUIOVector, data.nrreq); |
4060 | for (i = 0; i < data.nrreq; i++) { | |
4061 | qemu_iovec_init(&data.qiov[i], 1); | |
4062 | qemu_iovec_add(&data.qiov[i], | |
4063 | data.buf + i * data.bufsize, data.bufsize); | |
4064 | } | |
4065 | ||
4066 | gettimeofday(&t1, NULL); | |
4067 | bench_cb(&data, 0); | |
4068 | ||
4069 | while (data.n > 0) { | |
4070 | main_loop_wait(false); | |
4071 | } | |
4072 | gettimeofday(&t2, NULL); | |
4073 | ||
4074 | printf("Run completed in %3.3f seconds.\n", | |
4075 | (t2.tv_sec - t1.tv_sec) | |
4076 | + ((double)(t2.tv_usec - t1.tv_usec) / 1000000)); | |
4077 | ||
4078 | out: | |
79d46583 FZ |
4079 | if (data.buf) { |
4080 | blk_unregister_buf(blk, data.buf); | |
4081 | } | |
b6133b8c KW |
4082 | qemu_vfree(data.buf); |
4083 | blk_unref(blk); | |
4084 | ||
4085 | if (ret) { | |
86ce1f6e RS |
4086 | return 1; |
4087 | } | |
4088 | return 0; | |
4089 | } | |
4090 | ||
4091 | #define C_BS 01 | |
4092 | #define C_COUNT 02 | |
4093 | #define C_IF 04 | |
4094 | #define C_OF 010 | |
f7c15533 | 4095 | #define C_SKIP 020 |
86ce1f6e RS |
4096 | |
4097 | struct DdInfo { | |
4098 | unsigned int flags; | |
4099 | int64_t count; | |
4100 | }; | |
4101 | ||
4102 | struct DdIo { | |
4103 | int bsz; /* Block size */ | |
4104 | char *filename; | |
4105 | uint8_t *buf; | |
f7c15533 | 4106 | int64_t offset; |
86ce1f6e RS |
4107 | }; |
4108 | ||
4109 | struct DdOpts { | |
4110 | const char *name; | |
4111 | int (*f)(const char *, struct DdIo *, struct DdIo *, struct DdInfo *); | |
4112 | unsigned int flag; | |
4113 | }; | |
4114 | ||
4115 | static int img_dd_bs(const char *arg, | |
4116 | struct DdIo *in, struct DdIo *out, | |
4117 | struct DdInfo *dd) | |
4118 | { | |
86ce1f6e RS |
4119 | int64_t res; |
4120 | ||
606caa0a | 4121 | res = cvtnum(arg); |
86ce1f6e | 4122 | |
606caa0a | 4123 | if (res <= 0 || res > INT_MAX) { |
86ce1f6e RS |
4124 | error_report("invalid number: '%s'", arg); |
4125 | return 1; | |
4126 | } | |
4127 | in->bsz = out->bsz = res; | |
4128 | ||
4129 | return 0; | |
4130 | } | |
4131 | ||
4132 | static int img_dd_count(const char *arg, | |
4133 | struct DdIo *in, struct DdIo *out, | |
4134 | struct DdInfo *dd) | |
4135 | { | |
606caa0a | 4136 | dd->count = cvtnum(arg); |
86ce1f6e | 4137 | |
606caa0a | 4138 | if (dd->count < 0) { |
86ce1f6e RS |
4139 | error_report("invalid number: '%s'", arg); |
4140 | return 1; | |
4141 | } | |
4142 | ||
4143 | return 0; | |
4144 | } | |
4145 | ||
4146 | static int img_dd_if(const char *arg, | |
4147 | struct DdIo *in, struct DdIo *out, | |
4148 | struct DdInfo *dd) | |
4149 | { | |
4150 | in->filename = g_strdup(arg); | |
4151 | ||
4152 | return 0; | |
4153 | } | |
4154 | ||
4155 | static int img_dd_of(const char *arg, | |
4156 | struct DdIo *in, struct DdIo *out, | |
4157 | struct DdInfo *dd) | |
4158 | { | |
4159 | out->filename = g_strdup(arg); | |
4160 | ||
4161 | return 0; | |
4162 | } | |
4163 | ||
f7c15533 RS |
4164 | static int img_dd_skip(const char *arg, |
4165 | struct DdIo *in, struct DdIo *out, | |
4166 | struct DdInfo *dd) | |
4167 | { | |
606caa0a | 4168 | in->offset = cvtnum(arg); |
f7c15533 | 4169 | |
606caa0a | 4170 | if (in->offset < 0) { |
f7c15533 RS |
4171 | error_report("invalid number: '%s'", arg); |
4172 | return 1; | |
4173 | } | |
4174 | ||
4175 | return 0; | |
4176 | } | |
4177 | ||
86ce1f6e RS |
4178 | static int img_dd(int argc, char **argv) |
4179 | { | |
4180 | int ret = 0; | |
4181 | char *arg = NULL; | |
4182 | char *tmp; | |
4183 | BlockDriver *drv = NULL, *proto_drv = NULL; | |
4184 | BlockBackend *blk1 = NULL, *blk2 = NULL; | |
4185 | QemuOpts *opts = NULL; | |
4186 | QemuOptsList *create_opts = NULL; | |
4187 | Error *local_err = NULL; | |
4188 | bool image_opts = false; | |
4189 | int c, i; | |
4190 | const char *out_fmt = "raw"; | |
4191 | const char *fmt = NULL; | |
4192 | int64_t size = 0; | |
4193 | int64_t block_count = 0, out_pos, in_pos; | |
335e9937 | 4194 | bool force_share = false; |
86ce1f6e RS |
4195 | struct DdInfo dd = { |
4196 | .flags = 0, | |
4197 | .count = 0, | |
4198 | }; | |
4199 | struct DdIo in = { | |
4200 | .bsz = 512, /* Block size is by default 512 bytes */ | |
4201 | .filename = NULL, | |
f7c15533 RS |
4202 | .buf = NULL, |
4203 | .offset = 0 | |
86ce1f6e RS |
4204 | }; |
4205 | struct DdIo out = { | |
4206 | .bsz = 512, | |
4207 | .filename = NULL, | |
f7c15533 RS |
4208 | .buf = NULL, |
4209 | .offset = 0 | |
86ce1f6e RS |
4210 | }; |
4211 | ||
4212 | const struct DdOpts options[] = { | |
4213 | { "bs", img_dd_bs, C_BS }, | |
4214 | { "count", img_dd_count, C_COUNT }, | |
4215 | { "if", img_dd_if, C_IF }, | |
4216 | { "of", img_dd_of, C_OF }, | |
f7c15533 | 4217 | { "skip", img_dd_skip, C_SKIP }, |
86ce1f6e RS |
4218 | { NULL, NULL, 0 } |
4219 | }; | |
4220 | const struct option long_options[] = { | |
4221 | { "help", no_argument, 0, 'h'}, | |
83d4bf94 | 4222 | { "object", required_argument, 0, OPTION_OBJECT}, |
86ce1f6e | 4223 | { "image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
335e9937 | 4224 | { "force-share", no_argument, 0, 'U'}, |
86ce1f6e RS |
4225 | { 0, 0, 0, 0 } |
4226 | }; | |
4227 | ||
335e9937 | 4228 | while ((c = getopt_long(argc, argv, ":hf:O:U", long_options, NULL))) { |
86ce1f6e RS |
4229 | if (c == EOF) { |
4230 | break; | |
4231 | } | |
4232 | switch (c) { | |
4233 | case 'O': | |
4234 | out_fmt = optarg; | |
4235 | break; | |
4236 | case 'f': | |
4237 | fmt = optarg; | |
4238 | break; | |
c9192973 SH |
4239 | case ':': |
4240 | missing_argument(argv[optind - 1]); | |
4241 | break; | |
86ce1f6e | 4242 | case '?': |
c9192973 SH |
4243 | unrecognized_option(argv[optind - 1]); |
4244 | break; | |
86ce1f6e RS |
4245 | case 'h': |
4246 | help(); | |
4247 | break; | |
335e9937 FZ |
4248 | case 'U': |
4249 | force_share = true; | |
4250 | break; | |
2a245709 SH |
4251 | case OPTION_OBJECT: |
4252 | if (!qemu_opts_parse_noisily(&qemu_object_opts, optarg, true)) { | |
83d4bf94 DB |
4253 | ret = -1; |
4254 | goto out; | |
4255 | } | |
2a245709 | 4256 | break; |
86ce1f6e RS |
4257 | case OPTION_IMAGE_OPTS: |
4258 | image_opts = true; | |
4259 | break; | |
4260 | } | |
4261 | } | |
4262 | ||
4263 | for (i = optind; i < argc; i++) { | |
4264 | int j; | |
4265 | arg = g_strdup(argv[i]); | |
4266 | ||
4267 | tmp = strchr(arg, '='); | |
4268 | if (tmp == NULL) { | |
4269 | error_report("unrecognized operand %s", arg); | |
4270 | ret = -1; | |
4271 | goto out; | |
4272 | } | |
4273 | ||
4274 | *tmp++ = '\0'; | |
4275 | ||
4276 | for (j = 0; options[j].name != NULL; j++) { | |
4277 | if (!strcmp(arg, options[j].name)) { | |
4278 | break; | |
4279 | } | |
4280 | } | |
4281 | if (options[j].name == NULL) { | |
4282 | error_report("unrecognized operand %s", arg); | |
4283 | ret = -1; | |
4284 | goto out; | |
4285 | } | |
4286 | ||
4287 | if (options[j].f(tmp, &in, &out, &dd) != 0) { | |
4288 | ret = -1; | |
4289 | goto out; | |
4290 | } | |
4291 | dd.flags |= options[j].flag; | |
4292 | g_free(arg); | |
4293 | arg = NULL; | |
4294 | } | |
4295 | ||
4296 | if (!(dd.flags & C_IF && dd.flags & C_OF)) { | |
4297 | error_report("Must specify both input and output files"); | |
4298 | ret = -1; | |
4299 | goto out; | |
4300 | } | |
83d4bf94 DB |
4301 | |
4302 | if (qemu_opts_foreach(&qemu_object_opts, | |
4303 | user_creatable_add_opts_foreach, | |
4304 | NULL, NULL)) { | |
4305 | ret = -1; | |
4306 | goto out; | |
4307 | } | |
4308 | ||
335e9937 FZ |
4309 | blk1 = img_open(image_opts, in.filename, fmt, 0, false, false, |
4310 | force_share); | |
86ce1f6e RS |
4311 | |
4312 | if (!blk1) { | |
4313 | ret = -1; | |
4314 | goto out; | |
4315 | } | |
4316 | ||
4317 | drv = bdrv_find_format(out_fmt); | |
4318 | if (!drv) { | |
4319 | error_report("Unknown file format"); | |
4320 | ret = -1; | |
4321 | goto out; | |
4322 | } | |
4323 | proto_drv = bdrv_find_protocol(out.filename, true, &local_err); | |
4324 | ||
4325 | if (!proto_drv) { | |
4326 | error_report_err(local_err); | |
4327 | ret = -1; | |
4328 | goto out; | |
4329 | } | |
4330 | if (!drv->create_opts) { | |
4331 | error_report("Format driver '%s' does not support image creation", | |
4332 | drv->format_name); | |
4333 | ret = -1; | |
4334 | goto out; | |
4335 | } | |
4336 | if (!proto_drv->create_opts) { | |
4337 | error_report("Protocol driver '%s' does not support image creation", | |
4338 | proto_drv->format_name); | |
4339 | ret = -1; | |
4340 | goto out; | |
4341 | } | |
4342 | create_opts = qemu_opts_append(create_opts, drv->create_opts); | |
4343 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
4344 | ||
4345 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); | |
4346 | ||
4347 | size = blk_getlength(blk1); | |
4348 | if (size < 0) { | |
4349 | error_report("Failed to get size for '%s'", in.filename); | |
4350 | ret = -1; | |
4351 | goto out; | |
4352 | } | |
4353 | ||
4354 | if (dd.flags & C_COUNT && dd.count <= INT64_MAX / in.bsz && | |
4355 | dd.count * in.bsz < size) { | |
4356 | size = dd.count * in.bsz; | |
4357 | } | |
4358 | ||
f7c15533 RS |
4359 | /* Overflow means the specified offset is beyond input image's size */ |
4360 | if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz || | |
4361 | size < in.bsz * in.offset)) { | |
4362 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, 0, &error_abort); | |
4363 | } else { | |
4364 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, | |
4365 | size - in.bsz * in.offset, &error_abort); | |
4366 | } | |
86ce1f6e RS |
4367 | |
4368 | ret = bdrv_create(drv, out.filename, opts, &local_err); | |
4369 | if (ret < 0) { | |
4370 | error_reportf_err(local_err, | |
4371 | "%s: error while creating output image: ", | |
4372 | out.filename); | |
4373 | ret = -1; | |
4374 | goto out; | |
4375 | } | |
4376 | ||
ea204dda DB |
4377 | /* TODO, we can't honour --image-opts for the target, |
4378 | * since it needs to be given in a format compatible | |
4379 | * with the bdrv_create() call above which does not | |
4380 | * support image-opts style. | |
4381 | */ | |
29cf9336 | 4382 | blk2 = img_open_file(out.filename, NULL, out_fmt, BDRV_O_RDWR, |
ea204dda | 4383 | false, false, false); |
86ce1f6e RS |
4384 | |
4385 | if (!blk2) { | |
4386 | ret = -1; | |
4387 | goto out; | |
4388 | } | |
4389 | ||
f7c15533 RS |
4390 | if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz || |
4391 | size < in.offset * in.bsz)) { | |
4392 | /* We give a warning if the skip option is bigger than the input | |
4393 | * size and create an empty output disk image (i.e. like dd(1)). | |
4394 | */ | |
4395 | error_report("%s: cannot skip to specified offset", in.filename); | |
4396 | in_pos = size; | |
4397 | } else { | |
4398 | in_pos = in.offset * in.bsz; | |
4399 | } | |
4400 | ||
86ce1f6e RS |
4401 | in.buf = g_new(uint8_t, in.bsz); |
4402 | ||
f7c15533 | 4403 | for (out_pos = 0; in_pos < size; block_count++) { |
86ce1f6e RS |
4404 | int in_ret, out_ret; |
4405 | ||
4406 | if (in_pos + in.bsz > size) { | |
4407 | in_ret = blk_pread(blk1, in_pos, in.buf, size - in_pos); | |
4408 | } else { | |
4409 | in_ret = blk_pread(blk1, in_pos, in.buf, in.bsz); | |
4410 | } | |
4411 | if (in_ret < 0) { | |
4412 | error_report("error while reading from input image file: %s", | |
4413 | strerror(-in_ret)); | |
4414 | ret = -1; | |
4415 | goto out; | |
4416 | } | |
4417 | in_pos += in_ret; | |
4418 | ||
4419 | out_ret = blk_pwrite(blk2, out_pos, in.buf, in_ret, 0); | |
4420 | ||
4421 | if (out_ret < 0) { | |
4422 | error_report("error while writing to output image file: %s", | |
4423 | strerror(-out_ret)); | |
4424 | ret = -1; | |
4425 | goto out; | |
4426 | } | |
4427 | out_pos += out_ret; | |
4428 | } | |
4429 | ||
4430 | out: | |
4431 | g_free(arg); | |
4432 | qemu_opts_del(opts); | |
4433 | qemu_opts_free(create_opts); | |
4434 | blk_unref(blk1); | |
4435 | blk_unref(blk2); | |
4436 | g_free(in.filename); | |
4437 | g_free(out.filename); | |
4438 | g_free(in.buf); | |
4439 | g_free(out.buf); | |
4440 | ||
4441 | if (ret) { | |
b6133b8c KW |
4442 | return 1; |
4443 | } | |
4444 | return 0; | |
4445 | } | |
4446 | ||
fd03c2b8 SH |
4447 | static void dump_json_block_measure_info(BlockMeasureInfo *info) |
4448 | { | |
4449 | QString *str; | |
4450 | QObject *obj; | |
4451 | Visitor *v = qobject_output_visitor_new(&obj); | |
4452 | ||
4453 | visit_type_BlockMeasureInfo(v, NULL, &info, &error_abort); | |
4454 | visit_complete(v, &obj); | |
4455 | str = qobject_to_json_pretty(obj); | |
4456 | assert(str != NULL); | |
4457 | printf("%s\n", qstring_get_str(str)); | |
4458 | qobject_decref(obj); | |
4459 | visit_free(v); | |
4460 | QDECREF(str); | |
4461 | } | |
4462 | ||
4463 | static int img_measure(int argc, char **argv) | |
4464 | { | |
4465 | static const struct option long_options[] = { | |
4466 | {"help", no_argument, 0, 'h'}, | |
4467 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, | |
4468 | {"object", required_argument, 0, OPTION_OBJECT}, | |
4469 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
4470 | {"size", required_argument, 0, OPTION_SIZE}, | |
4471 | {"force-share", no_argument, 0, 'U'}, | |
4472 | {0, 0, 0, 0} | |
4473 | }; | |
4474 | OutputFormat output_format = OFORMAT_HUMAN; | |
4475 | BlockBackend *in_blk = NULL; | |
4476 | BlockDriver *drv; | |
4477 | const char *filename = NULL; | |
4478 | const char *fmt = NULL; | |
4479 | const char *out_fmt = "raw"; | |
4480 | char *options = NULL; | |
4481 | char *snapshot_name = NULL; | |
4482 | bool force_share = false; | |
4483 | QemuOpts *opts = NULL; | |
4484 | QemuOpts *object_opts = NULL; | |
4485 | QemuOpts *sn_opts = NULL; | |
4486 | QemuOptsList *create_opts = NULL; | |
4487 | bool image_opts = false; | |
4488 | uint64_t img_size = UINT64_MAX; | |
4489 | BlockMeasureInfo *info = NULL; | |
4490 | Error *local_err = NULL; | |
4491 | int ret = 1; | |
4492 | int c; | |
4493 | ||
4494 | while ((c = getopt_long(argc, argv, "hf:O:o:l:U", | |
4495 | long_options, NULL)) != -1) { | |
4496 | switch (c) { | |
4497 | case '?': | |
4498 | case 'h': | |
4499 | help(); | |
4500 | break; | |
4501 | case 'f': | |
4502 | fmt = optarg; | |
4503 | break; | |
4504 | case 'O': | |
4505 | out_fmt = optarg; | |
4506 | break; | |
4507 | case 'o': | |
4508 | if (!is_valid_option_list(optarg)) { | |
4509 | error_report("Invalid option list: %s", optarg); | |
4510 | goto out; | |
4511 | } | |
4512 | if (!options) { | |
4513 | options = g_strdup(optarg); | |
4514 | } else { | |
4515 | char *old_options = options; | |
4516 | options = g_strdup_printf("%s,%s", options, optarg); | |
4517 | g_free(old_options); | |
4518 | } | |
4519 | break; | |
4520 | case 'l': | |
4521 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
4522 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, | |
4523 | optarg, false); | |
4524 | if (!sn_opts) { | |
4525 | error_report("Failed in parsing snapshot param '%s'", | |
4526 | optarg); | |
4527 | goto out; | |
4528 | } | |
4529 | } else { | |
4530 | snapshot_name = optarg; | |
4531 | } | |
4532 | break; | |
4533 | case 'U': | |
4534 | force_share = true; | |
4535 | break; | |
4536 | case OPTION_OBJECT: | |
4537 | object_opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
4538 | optarg, true); | |
4539 | if (!object_opts) { | |
4540 | goto out; | |
4541 | } | |
4542 | break; | |
4543 | case OPTION_IMAGE_OPTS: | |
4544 | image_opts = true; | |
4545 | break; | |
4546 | case OPTION_OUTPUT: | |
4547 | if (!strcmp(optarg, "json")) { | |
4548 | output_format = OFORMAT_JSON; | |
4549 | } else if (!strcmp(optarg, "human")) { | |
4550 | output_format = OFORMAT_HUMAN; | |
4551 | } else { | |
4552 | error_report("--output must be used with human or json " | |
4553 | "as argument."); | |
4554 | goto out; | |
4555 | } | |
4556 | break; | |
4557 | case OPTION_SIZE: | |
4558 | { | |
4559 | int64_t sval; | |
4560 | ||
4561 | sval = cvtnum(optarg); | |
4562 | if (sval < 0) { | |
4563 | if (sval == -ERANGE) { | |
4564 | error_report("Image size must be less than 8 EiB!"); | |
4565 | } else { | |
4566 | error_report("Invalid image size specified! You may use " | |
4567 | "k, M, G, T, P or E suffixes for "); | |
4568 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
4569 | "petabytes and exabytes."); | |
4570 | } | |
4571 | goto out; | |
4572 | } | |
4573 | img_size = (uint64_t)sval; | |
4574 | } | |
4575 | break; | |
4576 | } | |
4577 | } | |
4578 | ||
4579 | if (qemu_opts_foreach(&qemu_object_opts, | |
4580 | user_creatable_add_opts_foreach, | |
4581 | NULL, NULL)) { | |
4582 | goto out; | |
4583 | } | |
4584 | ||
4585 | if (argc - optind > 1) { | |
4586 | error_report("At most one filename argument is allowed."); | |
4587 | goto out; | |
4588 | } else if (argc - optind == 1) { | |
4589 | filename = argv[optind]; | |
4590 | } | |
4591 | ||
4592 | if (!filename && | |
4593 | (object_opts || image_opts || fmt || snapshot_name || sn_opts)) { | |
4594 | error_report("--object, --image-opts, -f, and -l " | |
4595 | "require a filename argument."); | |
4596 | goto out; | |
4597 | } | |
4598 | if (filename && img_size != UINT64_MAX) { | |
4599 | error_report("--size N cannot be used together with a filename."); | |
4600 | goto out; | |
4601 | } | |
4602 | if (!filename && img_size == UINT64_MAX) { | |
4603 | error_report("Either --size N or one filename must be specified."); | |
4604 | goto out; | |
4605 | } | |
4606 | ||
4607 | if (filename) { | |
4608 | in_blk = img_open(image_opts, filename, fmt, 0, | |
4609 | false, false, force_share); | |
4610 | if (!in_blk) { | |
4611 | goto out; | |
4612 | } | |
4613 | ||
4614 | if (sn_opts) { | |
4615 | bdrv_snapshot_load_tmp(blk_bs(in_blk), | |
4616 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
4617 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
4618 | &local_err); | |
4619 | } else if (snapshot_name != NULL) { | |
4620 | bdrv_snapshot_load_tmp_by_id_or_name(blk_bs(in_blk), | |
4621 | snapshot_name, &local_err); | |
4622 | } | |
4623 | if (local_err) { | |
4624 | error_reportf_err(local_err, "Failed to load snapshot: "); | |
4625 | goto out; | |
4626 | } | |
4627 | } | |
4628 | ||
4629 | drv = bdrv_find_format(out_fmt); | |
4630 | if (!drv) { | |
4631 | error_report("Unknown file format '%s'", out_fmt); | |
4632 | goto out; | |
4633 | } | |
4634 | if (!drv->create_opts) { | |
4635 | error_report("Format driver '%s' does not support image creation", | |
4636 | drv->format_name); | |
4637 | goto out; | |
4638 | } | |
4639 | ||
4640 | create_opts = qemu_opts_append(create_opts, drv->create_opts); | |
4641 | create_opts = qemu_opts_append(create_opts, bdrv_file.create_opts); | |
4642 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); | |
4643 | if (options) { | |
4644 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
4645 | if (local_err) { | |
4646 | error_report_err(local_err); | |
4647 | error_report("Invalid options for file format '%s'", out_fmt); | |
4648 | goto out; | |
4649 | } | |
4650 | } | |
4651 | if (img_size != UINT64_MAX) { | |
4652 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, img_size, &error_abort); | |
4653 | } | |
4654 | ||
4655 | info = bdrv_measure(drv, opts, in_blk ? blk_bs(in_blk) : NULL, &local_err); | |
4656 | if (local_err) { | |
4657 | error_report_err(local_err); | |
4658 | goto out; | |
4659 | } | |
4660 | ||
4661 | if (output_format == OFORMAT_HUMAN) { | |
4662 | printf("required size: %" PRIu64 "\n", info->required); | |
4663 | printf("fully allocated size: %" PRIu64 "\n", info->fully_allocated); | |
4664 | } else { | |
4665 | dump_json_block_measure_info(info); | |
4666 | } | |
4667 | ||
4668 | ret = 0; | |
4669 | ||
4670 | out: | |
4671 | qapi_free_BlockMeasureInfo(info); | |
4672 | qemu_opts_del(object_opts); | |
4673 | qemu_opts_del(opts); | |
4674 | qemu_opts_del(sn_opts); | |
4675 | qemu_opts_free(create_opts); | |
4676 | g_free(options); | |
4677 | blk_unref(in_blk); | |
4678 | return ret; | |
4679 | } | |
b6133b8c | 4680 | |
c227f099 | 4681 | static const img_cmd_t img_cmds[] = { |
153859be SB |
4682 | #define DEF(option, callback, arg_string) \ |
4683 | { option, callback }, | |
4684 | #include "qemu-img-cmds.h" | |
4685 | #undef DEF | |
4686 | #undef GEN_DOCS | |
4687 | { NULL, NULL, }, | |
4688 | }; | |
4689 | ||
ea2384d3 FB |
4690 | int main(int argc, char **argv) |
4691 | { | |
c227f099 | 4692 | const img_cmd_t *cmd; |
153859be | 4693 | const char *cmdname; |
2f78e491 | 4694 | Error *local_error = NULL; |
06a1e0c1 | 4695 | char *trace_file = NULL; |
7db1689c | 4696 | int c; |
7db1689c JC |
4697 | static const struct option long_options[] = { |
4698 | {"help", no_argument, 0, 'h'}, | |
10985131 | 4699 | {"version", no_argument, 0, 'V'}, |
06a1e0c1 | 4700 | {"trace", required_argument, NULL, 'T'}, |
7db1689c JC |
4701 | {0, 0, 0, 0} |
4702 | }; | |
ea2384d3 | 4703 | |
526eda14 MK |
4704 | #ifdef CONFIG_POSIX |
4705 | signal(SIGPIPE, SIG_IGN); | |
4706 | #endif | |
4707 | ||
fe4db84d | 4708 | module_call_init(MODULE_INIT_TRACE); |
53f76e58 | 4709 | error_set_progname(argv[0]); |
10f5bff6 | 4710 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 4711 | |
2f78e491 | 4712 | if (qemu_init_main_loop(&local_error)) { |
565f65d2 | 4713 | error_report_err(local_error); |
2f78e491 CN |
4714 | exit(EXIT_FAILURE); |
4715 | } | |
4716 | ||
e8f2d272 | 4717 | qcrypto_init(&error_fatal); |
c2297088 | 4718 | |
064097d9 | 4719 | module_call_init(MODULE_INIT_QOM); |
ea2384d3 | 4720 | bdrv_init(); |
ac1307ab FZ |
4721 | if (argc < 2) { |
4722 | error_exit("Not enough arguments"); | |
4723 | } | |
153859be | 4724 | |
3babeb15 | 4725 | qemu_add_opts(&qemu_object_opts); |
eb769f74 | 4726 | qemu_add_opts(&qemu_source_opts); |
06a1e0c1 | 4727 | qemu_add_opts(&qemu_trace_opts); |
3babeb15 | 4728 | |
c9192973 | 4729 | while ((c = getopt_long(argc, argv, "+:hVT:", long_options, NULL)) != -1) { |
10985131 | 4730 | switch (c) { |
c9192973 SH |
4731 | case ':': |
4732 | missing_argument(argv[optind - 1]); | |
4733 | return 0; | |
4581c16f | 4734 | case '?': |
c9192973 SH |
4735 | unrecognized_option(argv[optind - 1]); |
4736 | return 0; | |
4737 | case 'h': | |
10985131 DL |
4738 | help(); |
4739 | return 0; | |
4740 | case 'V': | |
4741 | printf(QEMU_IMG_VERSION); | |
4742 | return 0; | |
06a1e0c1 DL |
4743 | case 'T': |
4744 | g_free(trace_file); | |
4745 | trace_file = trace_opt_parse(optarg); | |
4746 | break; | |
153859be | 4747 | } |
ea2384d3 | 4748 | } |
153859be | 4749 | |
10985131 | 4750 | cmdname = argv[optind]; |
7db1689c | 4751 | |
10985131 DL |
4752 | /* reset getopt_long scanning */ |
4753 | argc -= optind; | |
4754 | if (argc < 1) { | |
5f6979cb JC |
4755 | return 0; |
4756 | } | |
10985131 | 4757 | argv += optind; |
cfef6a45 | 4758 | optind = 0; |
10985131 | 4759 | |
06a1e0c1 DL |
4760 | if (!trace_init_backends()) { |
4761 | exit(1); | |
4762 | } | |
4763 | trace_init_file(trace_file); | |
4764 | qemu_set_log(LOG_TRACE); | |
4765 | ||
10985131 DL |
4766 | /* find the command */ |
4767 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { | |
4768 | if (!strcmp(cmdname, cmd->name)) { | |
4769 | return cmd->handler(argc, argv); | |
4770 | } | |
4771 | } | |
7db1689c | 4772 | |
153859be | 4773 | /* not found */ |
ac1307ab | 4774 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 4775 | } |