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Commit | Line | Data |
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ea2384d3 | 1 | /* |
fb43f4dd | 2 | * QEMU disk image utility |
5fafdf24 | 3 | * |
68d0f70e | 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
5fafdf24 | 5 | * |
ea2384d3 FB |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
80c71a24 | 24 | #include "qemu/osdep.h" |
67a1de0d | 25 | #include "qemu-version.h" |
da34e65c | 26 | #include "qapi/error.h" |
c054b3fd | 27 | #include "qapi-visit.h" |
b3db211f | 28 | #include "qapi/qobject-output-visitor.h" |
cc7a8ea7 | 29 | #include "qapi/qmp/qerror.h" |
7b1b5d19 | 30 | #include "qapi/qmp/qjson.h" |
f348b6d1 | 31 | #include "qemu/cutils.h" |
3babeb15 | 32 | #include "qemu/config-file.h" |
1de7afc9 PB |
33 | #include "qemu/option.h" |
34 | #include "qemu/error-report.h" | |
06a1e0c1 | 35 | #include "qemu/log.h" |
3babeb15 | 36 | #include "qom/object_interfaces.h" |
9c17d615 | 37 | #include "sysemu/sysemu.h" |
26f54e9a | 38 | #include "sysemu/block-backend.h" |
737e150e | 39 | #include "block/block_int.h" |
d4a3238a | 40 | #include "block/blockjob.h" |
f364ec65 | 41 | #include "block/qapi.h" |
c2297088 | 42 | #include "crypto/init.h" |
06a1e0c1 | 43 | #include "trace/control.h" |
c054b3fd | 44 | #include <getopt.h> |
e8445331 | 45 | |
61979a6a | 46 | #define QEMU_IMG_VERSION "qemu-img version " QEMU_VERSION QEMU_PKGVERSION \ |
0781dd6e | 47 | "\n" QEMU_COPYRIGHT "\n" |
5f6979cb | 48 | |
c227f099 | 49 | typedef struct img_cmd_t { |
153859be SB |
50 | const char *name; |
51 | int (*handler)(int argc, char **argv); | |
c227f099 | 52 | } img_cmd_t; |
153859be | 53 | |
8599ea4c FS |
54 | enum { |
55 | OPTION_OUTPUT = 256, | |
56 | OPTION_BACKING_CHAIN = 257, | |
3babeb15 | 57 | OPTION_OBJECT = 258, |
eb769f74 | 58 | OPTION_IMAGE_OPTS = 259, |
b6495fa8 | 59 | OPTION_PATTERN = 260, |
55d539c8 KW |
60 | OPTION_FLUSH_INTERVAL = 261, |
61 | OPTION_NO_DRAIN = 262, | |
8599ea4c FS |
62 | }; |
63 | ||
64 | typedef enum OutputFormat { | |
65 | OFORMAT_JSON, | |
66 | OFORMAT_HUMAN, | |
67 | } OutputFormat; | |
68 | ||
e6996143 | 69 | /* Default to cache=writeback as data integrity is not important for qemu-img */ |
661a0f71 | 70 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 71 | |
00c6d403 | 72 | static void format_print(void *opaque, const char *name) |
ea2384d3 | 73 | { |
00c6d403 | 74 | printf(" %s", name); |
ea2384d3 FB |
75 | } |
76 | ||
ac1307ab FZ |
77 | static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...) |
78 | { | |
79 | va_list ap; | |
80 | ||
81 | error_printf("qemu-img: "); | |
82 | ||
83 | va_start(ap, fmt); | |
84 | error_vprintf(fmt, ap); | |
85 | va_end(ap); | |
86 | ||
87 | error_printf("\nTry 'qemu-img --help' for more information\n"); | |
88 | exit(EXIT_FAILURE); | |
89 | } | |
90 | ||
c9192973 SH |
91 | static void QEMU_NORETURN missing_argument(const char *option) |
92 | { | |
93 | error_exit("missing argument for option '%s'", option); | |
94 | } | |
95 | ||
96 | static void QEMU_NORETURN unrecognized_option(const char *option) | |
97 | { | |
98 | error_exit("unrecognized option '%s'", option); | |
99 | } | |
100 | ||
d2c639d6 | 101 | /* Please keep in synch with qemu-img.texi */ |
ac1307ab | 102 | static void QEMU_NORETURN help(void) |
ea2384d3 | 103 | { |
e00291c0 | 104 | const char *help_msg = |
5f6979cb | 105 | QEMU_IMG_VERSION |
10985131 | 106 | "usage: qemu-img [standard options] command [command options]\n" |
3f020d70 | 107 | "QEMU disk image utility\n" |
108 | "\n" | |
10985131 DL |
109 | " '-h', '--help' display this help and exit\n" |
110 | " '-V', '--version' output version information and exit\n" | |
06a1e0c1 DL |
111 | " '-T', '--trace' [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
112 | " specify tracing options\n" | |
10985131 | 113 | "\n" |
3f020d70 | 114 | "Command syntax:\n" |
153859be SB |
115 | #define DEF(option, callback, arg_string) \ |
116 | " " arg_string "\n" | |
117 | #include "qemu-img-cmds.h" | |
118 | #undef DEF | |
119 | #undef GEN_DOCS | |
3f020d70 | 120 | "\n" |
121 | "Command parameters:\n" | |
122 | " 'filename' is a disk image filename\n" | |
3babeb15 DB |
123 | " 'objectdef' is a QEMU user creatable object definition. See the qemu(1)\n" |
124 | " manual page for a description of the object properties. The most common\n" | |
125 | " object type is a 'secret', which is used to supply passwords and/or\n" | |
126 | " encryption keys.\n" | |
3f020d70 | 127 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" |
661a0f71 | 128 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
129 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
130 | " 'directsync' and 'unsafe' (default for convert)\n" | |
bb87fdf8 SH |
131 | " 'src_cache' is the cache mode used to read input disk images, the valid\n" |
132 | " options are the same as for the 'cache' option\n" | |
3f020d70 | 133 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
134 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
135 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
136 | " supported. 'b' is ignored.\n" | |
3f020d70 | 137 | " 'output_filename' is the destination disk image filename\n" |
138 | " 'output_fmt' is the destination format\n" | |
139 | " 'options' is a comma separated list of format specific options in a\n" | |
140 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
141 | " used format\n" | |
ef80654d WX |
142 | " 'snapshot_param' is param used for internal snapshot, format\n" |
143 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
144 | " '[ID_OR_NAME]'\n" | |
145 | " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n" | |
146 | " instead\n" | |
3f020d70 | 147 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
148 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
149 | " match exactly. The image doesn't need a working backing file before\n" | |
150 | " rebasing in this case (useful for renaming the backing file)\n" | |
151 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 152 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 153 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
11b6699a PL |
154 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
155 | " contain only zeros for qemu-img to create a sparse image during\n" | |
156 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
157 | " unallocated or zero sectors, and the destination image will always be\n" | |
158 | " fully allocated\n" | |
c054b3fd | 159 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
160 | " '-n' skips the target volume creation (useful if the volume is created\n" |
161 | " prior to running qemu-img)\n" | |
3f020d70 | 162 | "\n" |
4534ff54 KW |
163 | "Parameters to check subcommand:\n" |
164 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
165 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
166 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 167 | " hiding corruption that has already occurred.\n" |
4534ff54 | 168 | "\n" |
2d9187bc PL |
169 | "Parameters to convert subcommand:\n" |
170 | " '-m' specifies how many coroutines work in parallel during the convert\n" | |
171 | " process (defaults to 8)\n" | |
172 | " '-W' allow to write to the target out of order rather than sequential\n" | |
173 | "\n" | |
3f020d70 | 174 | "Parameters to snapshot subcommand:\n" |
175 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
176 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
177 | " '-c' creates a snapshot\n" | |
178 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
179 | " '-l' lists all snapshots in the given image\n" |
180 | "\n" | |
181 | "Parameters to compare subcommand:\n" | |
182 | " '-f' first image format\n" | |
183 | " '-F' second image format\n" | |
86ce1f6e RS |
184 | " '-s' run in Strict mode - fail on different image size or sector allocation\n" |
185 | "\n" | |
186 | "Parameters to dd subcommand:\n" | |
187 | " 'bs=BYTES' read and write up to BYTES bytes at a time " | |
188 | "(default: 512)\n" | |
189 | " 'count=N' copy only N input blocks\n" | |
190 | " 'if=FILE' read from FILE\n" | |
f7c15533 RS |
191 | " 'of=FILE' write to FILE\n" |
192 | " 'skip=N' skip N bs-sized blocks at the start of input\n"; | |
e00291c0 PB |
193 | |
194 | printf("%s\nSupported formats:", help_msg); | |
00c6d403 | 195 | bdrv_iterate_format(format_print, NULL); |
ea2384d3 | 196 | printf("\n"); |
ac1307ab | 197 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
198 | } |
199 | ||
3babeb15 DB |
200 | static QemuOptsList qemu_object_opts = { |
201 | .name = "object", | |
202 | .implied_opt_name = "qom-type", | |
203 | .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), | |
204 | .desc = { | |
205 | { } | |
206 | }, | |
207 | }; | |
208 | ||
eb769f74 DB |
209 | static QemuOptsList qemu_source_opts = { |
210 | .name = "source", | |
211 | .implied_opt_name = "file", | |
212 | .head = QTAILQ_HEAD_INITIALIZER(qemu_source_opts.head), | |
213 | .desc = { | |
214 | { } | |
215 | }, | |
216 | }; | |
217 | ||
7c30f657 | 218 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
219 | { |
220 | int ret = 0; | |
221 | if (!quiet) { | |
222 | va_list args; | |
223 | va_start(args, fmt); | |
224 | ret = vprintf(fmt, args); | |
225 | va_end(args); | |
226 | } | |
227 | return ret; | |
228 | } | |
229 | ||
ea2384d3 | 230 | |
4ac8aacd JS |
231 | static int print_block_option_help(const char *filename, const char *fmt) |
232 | { | |
233 | BlockDriver *drv, *proto_drv; | |
83d0521a | 234 | QemuOptsList *create_opts = NULL; |
b65a5e12 | 235 | Error *local_err = NULL; |
4ac8aacd JS |
236 | |
237 | /* Find driver and parse its options */ | |
238 | drv = bdrv_find_format(fmt); | |
239 | if (!drv) { | |
15654a6d | 240 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
241 | return 1; |
242 | } | |
243 | ||
c282e1fd | 244 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
a283cb6e | 245 | if (filename) { |
b65a5e12 | 246 | proto_drv = bdrv_find_protocol(filename, true, &local_err); |
a283cb6e | 247 | if (!proto_drv) { |
2867ce4a | 248 | error_report_err(local_err); |
83d0521a | 249 | qemu_opts_free(create_opts); |
a283cb6e KW |
250 | return 1; |
251 | } | |
c282e1fd | 252 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); |
a283cb6e KW |
253 | } |
254 | ||
83d0521a CL |
255 | qemu_opts_print_help(create_opts); |
256 | qemu_opts_free(create_opts); | |
4ac8aacd JS |
257 | return 0; |
258 | } | |
259 | ||
eb769f74 DB |
260 | |
261 | static int img_open_password(BlockBackend *blk, const char *filename, | |
abb06c5a | 262 | int flags, bool quiet) |
75c23805 FB |
263 | { |
264 | BlockDriverState *bs; | |
75c23805 | 265 | char password[256]; |
eb769f74 DB |
266 | |
267 | bs = blk_bs(blk); | |
4ef130fc DB |
268 | if (bdrv_is_encrypted(bs) && bdrv_key_required(bs) && |
269 | !(flags & BDRV_O_NO_IO)) { | |
eb769f74 DB |
270 | qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); |
271 | if (qemu_read_password(password, sizeof(password)) < 0) { | |
272 | error_report("No password given"); | |
273 | return -1; | |
274 | } | |
275 | if (bdrv_set_key(bs, password) < 0) { | |
276 | error_report("invalid password"); | |
277 | return -1; | |
278 | } | |
279 | } | |
280 | return 0; | |
281 | } | |
282 | ||
283 | ||
efaa7c4e | 284 | static BlockBackend *img_open_opts(const char *optstr, |
ce099547 | 285 | QemuOpts *opts, int flags, bool writethrough, |
abb06c5a | 286 | bool quiet) |
eb769f74 DB |
287 | { |
288 | QDict *options; | |
289 | Error *local_err = NULL; | |
290 | BlockBackend *blk; | |
291 | options = qemu_opts_to_qdict(opts, NULL); | |
efaa7c4e | 292 | blk = blk_new_open(NULL, NULL, options, flags, &local_err); |
eb769f74 | 293 | if (!blk) { |
143605a2 | 294 | error_reportf_err(local_err, "Could not open '%s': ", optstr); |
eb769f74 DB |
295 | return NULL; |
296 | } | |
ce099547 | 297 | blk_set_enable_write_cache(blk, !writethrough); |
eb769f74 | 298 | |
abb06c5a | 299 | if (img_open_password(blk, optstr, flags, quiet) < 0) { |
eb769f74 DB |
300 | blk_unref(blk); |
301 | return NULL; | |
302 | } | |
303 | return blk; | |
304 | } | |
305 | ||
efaa7c4e | 306 | static BlockBackend *img_open_file(const char *filename, |
eb769f74 | 307 | const char *fmt, int flags, |
ce099547 | 308 | bool writethrough, bool quiet) |
eb769f74 DB |
309 | { |
310 | BlockBackend *blk; | |
34b5d2c6 | 311 | Error *local_err = NULL; |
5bd31326 | 312 | QDict *options = NULL; |
ad717139 | 313 | |
75c23805 | 314 | if (fmt) { |
5bd31326 HR |
315 | options = qdict_new(); |
316 | qdict_put(options, "driver", qstring_from_str(fmt)); | |
75c23805 | 317 | } |
b9eaf9ec | 318 | |
efaa7c4e | 319 | blk = blk_new_open(filename, NULL, options, flags, &local_err); |
5bd31326 | 320 | if (!blk) { |
c29b77f9 | 321 | error_reportf_err(local_err, "Could not open '%s': ", filename); |
eb769f74 | 322 | return NULL; |
75c23805 | 323 | } |
ce099547 | 324 | blk_set_enable_write_cache(blk, !writethrough); |
b9eaf9ec | 325 | |
abb06c5a | 326 | if (img_open_password(blk, filename, flags, quiet) < 0) { |
eb769f74 DB |
327 | blk_unref(blk); |
328 | return NULL; | |
329 | } | |
330 | return blk; | |
331 | } | |
332 | ||
333 | ||
efaa7c4e | 334 | static BlockBackend *img_open(bool image_opts, |
eb769f74 | 335 | const char *filename, |
ce099547 | 336 | const char *fmt, int flags, bool writethrough, |
abb06c5a | 337 | bool quiet) |
eb769f74 DB |
338 | { |
339 | BlockBackend *blk; | |
340 | if (image_opts) { | |
341 | QemuOpts *opts; | |
342 | if (fmt) { | |
343 | error_report("--image-opts and --format are mutually exclusive"); | |
344 | return NULL; | |
345 | } | |
346 | opts = qemu_opts_parse_noisily(qemu_find_opts("source"), | |
347 | filename, true); | |
348 | if (!opts) { | |
349 | return NULL; | |
350 | } | |
ce099547 | 351 | blk = img_open_opts(filename, opts, flags, writethrough, quiet); |
eb769f74 | 352 | } else { |
ce099547 | 353 | blk = img_open_file(filename, fmt, flags, writethrough, quiet); |
75c23805 | 354 | } |
7e7d56d9 | 355 | return blk; |
75c23805 FB |
356 | } |
357 | ||
eb769f74 | 358 | |
83d0521a | 359 | static int add_old_style_options(const char *fmt, QemuOpts *opts, |
eec77d9e JS |
360 | const char *base_filename, |
361 | const char *base_fmt) | |
efa84d43 | 362 | { |
6750e795 MA |
363 | Error *err = NULL; |
364 | ||
efa84d43 | 365 | if (base_filename) { |
f43e47db | 366 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &err); |
6750e795 | 367 | if (err) { |
15654a6d JS |
368 | error_report("Backing file not supported for file format '%s'", |
369 | fmt); | |
6750e795 | 370 | error_free(err); |
c2abccec | 371 | return -1; |
efa84d43 KW |
372 | } |
373 | } | |
374 | if (base_fmt) { | |
f43e47db | 375 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &err); |
6750e795 | 376 | if (err) { |
15654a6d JS |
377 | error_report("Backing file format not supported for file " |
378 | "format '%s'", fmt); | |
6750e795 | 379 | error_free(err); |
c2abccec | 380 | return -1; |
efa84d43 KW |
381 | } |
382 | } | |
c2abccec | 383 | return 0; |
efa84d43 KW |
384 | } |
385 | ||
606caa0a MA |
386 | static int64_t cvtnum(const char *s) |
387 | { | |
f17fd4fd | 388 | int err; |
f46bfdbf | 389 | uint64_t value; |
606caa0a | 390 | |
f17fd4fd MA |
391 | err = qemu_strtosz(s, NULL, &value); |
392 | if (err < 0) { | |
393 | return err; | |
394 | } | |
f46bfdbf MA |
395 | if (value > INT64_MAX) { |
396 | return -ERANGE; | |
397 | } | |
f17fd4fd | 398 | return value; |
606caa0a MA |
399 | } |
400 | ||
ea2384d3 FB |
401 | static int img_create(int argc, char **argv) |
402 | { | |
a9300911 | 403 | int c; |
1da7cfbd | 404 | uint64_t img_size = -1; |
ea2384d3 | 405 | const char *fmt = "raw"; |
9230eaf6 | 406 | const char *base_fmt = NULL; |
ea2384d3 FB |
407 | const char *filename; |
408 | const char *base_filename = NULL; | |
9ea2ea71 | 409 | char *options = NULL; |
9b37525a | 410 | Error *local_err = NULL; |
f382d43a | 411 | bool quiet = false; |
3b46e624 | 412 | |
ea2384d3 | 413 | for(;;) { |
3babeb15 DB |
414 | static const struct option long_options[] = { |
415 | {"help", no_argument, 0, 'h'}, | |
416 | {"object", required_argument, 0, OPTION_OBJECT}, | |
417 | {0, 0, 0, 0} | |
418 | }; | |
c9192973 | 419 | c = getopt_long(argc, argv, ":F:b:f:he6o:q", |
3babeb15 | 420 | long_options, NULL); |
b8fb60da | 421 | if (c == -1) { |
ea2384d3 | 422 | break; |
b8fb60da | 423 | } |
ea2384d3 | 424 | switch(c) { |
c9192973 SH |
425 | case ':': |
426 | missing_argument(argv[optind - 1]); | |
427 | break; | |
ef87394c | 428 | case '?': |
c9192973 SH |
429 | unrecognized_option(argv[optind - 1]); |
430 | break; | |
ea2384d3 FB |
431 | case 'h': |
432 | help(); | |
433 | break; | |
9230eaf6 AL |
434 | case 'F': |
435 | base_fmt = optarg; | |
436 | break; | |
ea2384d3 FB |
437 | case 'b': |
438 | base_filename = optarg; | |
439 | break; | |
440 | case 'f': | |
441 | fmt = optarg; | |
442 | break; | |
443 | case 'e': | |
9d42e15d | 444 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 445 | "encryption\' instead!"); |
77386bf6 | 446 | goto fail; |
d8871c5a | 447 | case '6': |
9d42e15d | 448 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 449 | "compat6\' instead!"); |
77386bf6 | 450 | goto fail; |
9ea2ea71 | 451 | case 'o': |
77386bf6 KW |
452 | if (!is_valid_option_list(optarg)) { |
453 | error_report("Invalid option list: %s", optarg); | |
454 | goto fail; | |
455 | } | |
456 | if (!options) { | |
457 | options = g_strdup(optarg); | |
458 | } else { | |
459 | char *old_options = options; | |
460 | options = g_strdup_printf("%s,%s", options, optarg); | |
461 | g_free(old_options); | |
462 | } | |
9ea2ea71 | 463 | break; |
f382d43a MR |
464 | case 'q': |
465 | quiet = true; | |
466 | break; | |
3babeb15 DB |
467 | case OPTION_OBJECT: { |
468 | QemuOpts *opts; | |
469 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
470 | optarg, true); | |
471 | if (!opts) { | |
472 | goto fail; | |
473 | } | |
474 | } break; | |
ea2384d3 FB |
475 | } |
476 | } | |
9230eaf6 | 477 | |
b50cbabc | 478 | /* Get the filename */ |
a283cb6e KW |
479 | filename = (optind < argc) ? argv[optind] : NULL; |
480 | if (options && has_help_option(options)) { | |
481 | g_free(options); | |
482 | return print_block_option_help(filename, fmt); | |
483 | } | |
484 | ||
b8fb60da | 485 | if (optind >= argc) { |
ac1307ab | 486 | error_exit("Expecting image file name"); |
b8fb60da | 487 | } |
a283cb6e | 488 | optind++; |
b50cbabc | 489 | |
3babeb15 DB |
490 | if (qemu_opts_foreach(&qemu_object_opts, |
491 | user_creatable_add_opts_foreach, | |
51b9b478 | 492 | NULL, NULL)) { |
3babeb15 DB |
493 | goto fail; |
494 | } | |
495 | ||
1da7cfbd JS |
496 | /* Get image size, if specified */ |
497 | if (optind < argc) { | |
70b4f4bb | 498 | int64_t sval; |
606caa0a MA |
499 | |
500 | sval = cvtnum(argv[optind++]); | |
501 | if (sval < 0) { | |
79443397 LG |
502 | if (sval == -ERANGE) { |
503 | error_report("Image size must be less than 8 EiB!"); | |
504 | } else { | |
505 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
506 | "G, T, P or E suffixes for "); |
507 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
508 | "petabytes and exabytes."); | |
79443397 | 509 | } |
77386bf6 | 510 | goto fail; |
1da7cfbd JS |
511 | } |
512 | img_size = (uint64_t)sval; | |
513 | } | |
fc11eb26 | 514 | if (optind != argc) { |
ac1307ab | 515 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 516 | } |
1da7cfbd | 517 | |
9b37525a | 518 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
9217283d | 519 | options, img_size, 0, quiet, &local_err); |
84d18f06 | 520 | if (local_err) { |
c29b77f9 | 521 | error_reportf_err(local_err, "%s: ", filename); |
77386bf6 | 522 | goto fail; |
c2abccec | 523 | } |
a9300911 | 524 | |
77386bf6 | 525 | g_free(options); |
ea2384d3 | 526 | return 0; |
77386bf6 KW |
527 | |
528 | fail: | |
529 | g_free(options); | |
530 | return 1; | |
ea2384d3 FB |
531 | } |
532 | ||
f382d43a | 533 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 534 | { |
8599ea4c | 535 | QString *str; |
8599ea4c | 536 | QObject *obj; |
7d5e199a | 537 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
538 | |
539 | visit_type_ImageCheck(v, NULL, &check, &error_abort); | |
540 | visit_complete(v, &obj); | |
8599ea4c FS |
541 | str = qobject_to_json_pretty(obj); |
542 | assert(str != NULL); | |
f382d43a | 543 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c | 544 | qobject_decref(obj); |
3b098d56 | 545 | visit_free(v); |
8599ea4c FS |
546 | QDECREF(str); |
547 | } | |
548 | ||
f382d43a | 549 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
550 | { |
551 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 552 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
553 | } else { |
554 | if (check->corruptions) { | |
f382d43a MR |
555 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
556 | "Data may be corrupted, or further writes to the image " | |
557 | "may corrupt it.\n", | |
558 | check->corruptions); | |
8599ea4c FS |
559 | } |
560 | ||
561 | if (check->leaks) { | |
f382d43a MR |
562 | qprintf(quiet, |
563 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
564 | "This means waste of disk space, but no harm to data.\n", | |
565 | check->leaks); | |
8599ea4c FS |
566 | } |
567 | ||
568 | if (check->check_errors) { | |
f382d43a MR |
569 | qprintf(quiet, |
570 | "\n%" PRId64 | |
571 | " internal errors have occurred during the check.\n", | |
572 | check->check_errors); | |
8599ea4c FS |
573 | } |
574 | } | |
575 | ||
576 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
577 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
578 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
579 | check->allocated_clusters, check->total_clusters, | |
580 | check->allocated_clusters * 100.0 / check->total_clusters, | |
581 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
582 | check->compressed_clusters * 100.0 / | |
583 | check->allocated_clusters); | |
8599ea4c FS |
584 | } |
585 | ||
586 | if (check->image_end_offset) { | |
f382d43a MR |
587 | qprintf(quiet, |
588 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
589 | } |
590 | } | |
591 | ||
592 | static int collect_image_check(BlockDriverState *bs, | |
593 | ImageCheck *check, | |
594 | const char *filename, | |
595 | const char *fmt, | |
596 | int fix) | |
597 | { | |
598 | int ret; | |
599 | BdrvCheckResult result; | |
600 | ||
601 | ret = bdrv_check(bs, &result, fix); | |
602 | if (ret < 0) { | |
603 | return ret; | |
604 | } | |
605 | ||
606 | check->filename = g_strdup(filename); | |
607 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
608 | check->check_errors = result.check_errors; | |
609 | check->corruptions = result.corruptions; | |
610 | check->has_corruptions = result.corruptions != 0; | |
611 | check->leaks = result.leaks; | |
612 | check->has_leaks = result.leaks != 0; | |
613 | check->corruptions_fixed = result.corruptions_fixed; | |
614 | check->has_corruptions_fixed = result.corruptions != 0; | |
615 | check->leaks_fixed = result.leaks_fixed; | |
616 | check->has_leaks_fixed = result.leaks != 0; | |
617 | check->image_end_offset = result.image_end_offset; | |
618 | check->has_image_end_offset = result.image_end_offset != 0; | |
619 | check->total_clusters = result.bfi.total_clusters; | |
620 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
621 | check->allocated_clusters = result.bfi.allocated_clusters; | |
622 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
623 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
624 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
625 | check->compressed_clusters = result.bfi.compressed_clusters; |
626 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
627 | |
628 | return 0; | |
629 | } | |
630 | ||
e076f338 KW |
631 | /* |
632 | * Checks an image for consistency. Exit codes: | |
633 | * | |
d6635c4d HR |
634 | * 0 - Check completed, image is good |
635 | * 1 - Check not completed because of internal errors | |
636 | * 2 - Check completed, image is corrupted | |
637 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
638 | * 63 - Checks are not supported by the image format | |
e076f338 | 639 | */ |
1585969c AL |
640 | static int img_check(int argc, char **argv) |
641 | { | |
642 | int c, ret; | |
8599ea4c | 643 | OutputFormat output_format = OFORMAT_HUMAN; |
40055951 | 644 | const char *filename, *fmt, *output, *cache; |
26f54e9a | 645 | BlockBackend *blk; |
1585969c | 646 | BlockDriverState *bs; |
4534ff54 | 647 | int fix = 0; |
ce099547 KW |
648 | int flags = BDRV_O_CHECK; |
649 | bool writethrough; | |
7e7d56d9 | 650 | ImageCheck *check; |
f382d43a | 651 | bool quiet = false; |
eb769f74 | 652 | bool image_opts = false; |
1585969c AL |
653 | |
654 | fmt = NULL; | |
8599ea4c | 655 | output = NULL; |
40055951 | 656 | cache = BDRV_DEFAULT_CACHE; |
ce099547 | 657 | |
1585969c | 658 | for(;;) { |
8599ea4c FS |
659 | int option_index = 0; |
660 | static const struct option long_options[] = { | |
661 | {"help", no_argument, 0, 'h'}, | |
662 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 663 | {"repair", required_argument, 0, 'r'}, |
8599ea4c | 664 | {"output", required_argument, 0, OPTION_OUTPUT}, |
3babeb15 | 665 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 666 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
8599ea4c FS |
667 | {0, 0, 0, 0} |
668 | }; | |
c9192973 | 669 | c = getopt_long(argc, argv, ":hf:r:T:q", |
8599ea4c | 670 | long_options, &option_index); |
b8fb60da | 671 | if (c == -1) { |
1585969c | 672 | break; |
b8fb60da | 673 | } |
1585969c | 674 | switch(c) { |
c9192973 SH |
675 | case ':': |
676 | missing_argument(argv[optind - 1]); | |
677 | break; | |
ef87394c | 678 | case '?': |
c9192973 SH |
679 | unrecognized_option(argv[optind - 1]); |
680 | break; | |
1585969c AL |
681 | case 'h': |
682 | help(); | |
683 | break; | |
684 | case 'f': | |
685 | fmt = optarg; | |
686 | break; | |
4534ff54 KW |
687 | case 'r': |
688 | flags |= BDRV_O_RDWR; | |
689 | ||
690 | if (!strcmp(optarg, "leaks")) { | |
691 | fix = BDRV_FIX_LEAKS; | |
692 | } else if (!strcmp(optarg, "all")) { | |
693 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
694 | } else { | |
ac1307ab FZ |
695 | error_exit("Unknown option value for -r " |
696 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
697 | } |
698 | break; | |
8599ea4c FS |
699 | case OPTION_OUTPUT: |
700 | output = optarg; | |
701 | break; | |
40055951 HR |
702 | case 'T': |
703 | cache = optarg; | |
704 | break; | |
f382d43a MR |
705 | case 'q': |
706 | quiet = true; | |
707 | break; | |
3babeb15 DB |
708 | case OPTION_OBJECT: { |
709 | QemuOpts *opts; | |
710 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
711 | optarg, true); | |
712 | if (!opts) { | |
713 | return 1; | |
714 | } | |
715 | } break; | |
eb769f74 DB |
716 | case OPTION_IMAGE_OPTS: |
717 | image_opts = true; | |
718 | break; | |
1585969c AL |
719 | } |
720 | } | |
fc11eb26 | 721 | if (optind != argc - 1) { |
ac1307ab | 722 | error_exit("Expecting one image file name"); |
b8fb60da | 723 | } |
1585969c AL |
724 | filename = argv[optind++]; |
725 | ||
8599ea4c FS |
726 | if (output && !strcmp(output, "json")) { |
727 | output_format = OFORMAT_JSON; | |
728 | } else if (output && !strcmp(output, "human")) { | |
729 | output_format = OFORMAT_HUMAN; | |
730 | } else if (output) { | |
731 | error_report("--output must be used with human or json as argument."); | |
732 | return 1; | |
733 | } | |
734 | ||
3babeb15 DB |
735 | if (qemu_opts_foreach(&qemu_object_opts, |
736 | user_creatable_add_opts_foreach, | |
51b9b478 | 737 | NULL, NULL)) { |
3babeb15 DB |
738 | return 1; |
739 | } | |
740 | ||
ce099547 | 741 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
40055951 HR |
742 | if (ret < 0) { |
743 | error_report("Invalid source cache option: %s", cache); | |
744 | return 1; | |
745 | } | |
746 | ||
ce099547 | 747 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 MA |
748 | if (!blk) { |
749 | return 1; | |
c2abccec | 750 | } |
7e7d56d9 | 751 | bs = blk_bs(blk); |
8599ea4c FS |
752 | |
753 | check = g_new0(ImageCheck, 1); | |
754 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
755 | |
756 | if (ret == -ENOTSUP) { | |
55d492d7 | 757 | error_report("This image format does not support checks"); |
fefddf95 | 758 | ret = 63; |
8599ea4c | 759 | goto fail; |
e076f338 KW |
760 | } |
761 | ||
8599ea4c FS |
762 | if (check->corruptions_fixed || check->leaks_fixed) { |
763 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 764 | |
8599ea4c FS |
765 | leaks_fixed = check->leaks_fixed; |
766 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 767 | |
8599ea4c | 768 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
769 | qprintf(quiet, |
770 | "The following inconsistencies were found and repaired:\n\n" | |
771 | " %" PRId64 " leaked clusters\n" | |
772 | " %" PRId64 " corruptions\n\n" | |
773 | "Double checking the fixed image now...\n", | |
774 | check->leaks_fixed, | |
775 | check->corruptions_fixed); | |
e076f338 KW |
776 | } |
777 | ||
8599ea4c | 778 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 779 | |
8599ea4c FS |
780 | check->leaks_fixed = leaks_fixed; |
781 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
782 | } |
783 | ||
832390a5 HR |
784 | if (!ret) { |
785 | switch (output_format) { | |
786 | case OFORMAT_HUMAN: | |
787 | dump_human_image_check(check, quiet); | |
788 | break; | |
789 | case OFORMAT_JSON: | |
790 | dump_json_image_check(check, quiet); | |
791 | break; | |
792 | } | |
c6bb9ad1 FS |
793 | } |
794 | ||
8599ea4c | 795 | if (ret || check->check_errors) { |
832390a5 HR |
796 | if (ret) { |
797 | error_report("Check failed: %s", strerror(-ret)); | |
798 | } else { | |
799 | error_report("Check failed"); | |
800 | } | |
8599ea4c FS |
801 | ret = 1; |
802 | goto fail; | |
c2abccec | 803 | } |
e076f338 | 804 | |
8599ea4c FS |
805 | if (check->corruptions) { |
806 | ret = 2; | |
807 | } else if (check->leaks) { | |
808 | ret = 3; | |
e076f338 | 809 | } else { |
8599ea4c | 810 | ret = 0; |
e076f338 | 811 | } |
8599ea4c FS |
812 | |
813 | fail: | |
814 | qapi_free_ImageCheck(check); | |
26f54e9a | 815 | blk_unref(blk); |
8599ea4c | 816 | return ret; |
1585969c AL |
817 | } |
818 | ||
d4a3238a HR |
819 | typedef struct CommonBlockJobCBInfo { |
820 | BlockDriverState *bs; | |
821 | Error **errp; | |
822 | } CommonBlockJobCBInfo; | |
823 | ||
824 | static void common_block_job_cb(void *opaque, int ret) | |
825 | { | |
826 | CommonBlockJobCBInfo *cbi = opaque; | |
827 | ||
828 | if (ret < 0) { | |
829 | error_setg_errno(cbi->errp, -ret, "Block job failed"); | |
830 | } | |
d4a3238a HR |
831 | } |
832 | ||
833 | static void run_block_job(BlockJob *job, Error **errp) | |
834 | { | |
b75536c9 | 835 | AioContext *aio_context = blk_get_aio_context(job->blk); |
d4a3238a | 836 | |
4ef85a9c KW |
837 | /* FIXME In error cases, the job simply goes away and we access a dangling |
838 | * pointer below. */ | |
9e944cb4 | 839 | aio_context_acquire(aio_context); |
d4a3238a HR |
840 | do { |
841 | aio_poll(aio_context, true); | |
62547b8a JS |
842 | qemu_progress_print(job->len ? |
843 | ((float)job->offset / job->len * 100.f) : 0.0f, 0); | |
d4a3238a HR |
844 | } while (!job->ready); |
845 | ||
846 | block_job_complete_sync(job, errp); | |
9e944cb4 | 847 | aio_context_release(aio_context); |
687fa1d8 HR |
848 | |
849 | /* A block job may finish instantaneously without publishing any progress, | |
850 | * so just signal completion here */ | |
851 | qemu_progress_print(100.f, 0); | |
d4a3238a HR |
852 | } |
853 | ||
ea2384d3 FB |
854 | static int img_commit(int argc, char **argv) |
855 | { | |
661a0f71 | 856 | int c, ret, flags; |
1b22bffd | 857 | const char *filename, *fmt, *cache, *base; |
26f54e9a | 858 | BlockBackend *blk; |
d4a3238a | 859 | BlockDriverState *bs, *base_bs; |
4ef85a9c | 860 | BlockJob *job; |
687fa1d8 | 861 | bool progress = false, quiet = false, drop = false; |
ce099547 | 862 | bool writethrough; |
d4a3238a HR |
863 | Error *local_err = NULL; |
864 | CommonBlockJobCBInfo cbi; | |
eb769f74 | 865 | bool image_opts = false; |
9e944cb4 | 866 | AioContext *aio_context; |
ea2384d3 FB |
867 | |
868 | fmt = NULL; | |
661a0f71 | 869 | cache = BDRV_DEFAULT_CACHE; |
1b22bffd | 870 | base = NULL; |
ea2384d3 | 871 | for(;;) { |
3babeb15 DB |
872 | static const struct option long_options[] = { |
873 | {"help", no_argument, 0, 'h'}, | |
874 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 875 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
876 | {0, 0, 0, 0} |
877 | }; | |
c9192973 | 878 | c = getopt_long(argc, argv, ":f:ht:b:dpq", |
3babeb15 | 879 | long_options, NULL); |
b8fb60da | 880 | if (c == -1) { |
ea2384d3 | 881 | break; |
b8fb60da | 882 | } |
ea2384d3 | 883 | switch(c) { |
c9192973 SH |
884 | case ':': |
885 | missing_argument(argv[optind - 1]); | |
886 | break; | |
ef87394c | 887 | case '?': |
c9192973 SH |
888 | unrecognized_option(argv[optind - 1]); |
889 | break; | |
ea2384d3 FB |
890 | case 'h': |
891 | help(); | |
892 | break; | |
893 | case 'f': | |
894 | fmt = optarg; | |
895 | break; | |
661a0f71 FS |
896 | case 't': |
897 | cache = optarg; | |
898 | break; | |
1b22bffd HR |
899 | case 'b': |
900 | base = optarg; | |
901 | /* -b implies -d */ | |
902 | drop = true; | |
903 | break; | |
9a86fe48 HR |
904 | case 'd': |
905 | drop = true; | |
906 | break; | |
687fa1d8 HR |
907 | case 'p': |
908 | progress = true; | |
909 | break; | |
f382d43a MR |
910 | case 'q': |
911 | quiet = true; | |
912 | break; | |
3babeb15 DB |
913 | case OPTION_OBJECT: { |
914 | QemuOpts *opts; | |
915 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
916 | optarg, true); | |
917 | if (!opts) { | |
918 | return 1; | |
919 | } | |
920 | } break; | |
eb769f74 DB |
921 | case OPTION_IMAGE_OPTS: |
922 | image_opts = true; | |
923 | break; | |
ea2384d3 FB |
924 | } |
925 | } | |
687fa1d8 HR |
926 | |
927 | /* Progress is not shown in Quiet mode */ | |
928 | if (quiet) { | |
929 | progress = false; | |
930 | } | |
931 | ||
fc11eb26 | 932 | if (optind != argc - 1) { |
ac1307ab | 933 | error_exit("Expecting one image file name"); |
b8fb60da | 934 | } |
ea2384d3 FB |
935 | filename = argv[optind++]; |
936 | ||
3babeb15 DB |
937 | if (qemu_opts_foreach(&qemu_object_opts, |
938 | user_creatable_add_opts_foreach, | |
51b9b478 | 939 | NULL, NULL)) { |
3babeb15 DB |
940 | return 1; |
941 | } | |
942 | ||
9a86fe48 | 943 | flags = BDRV_O_RDWR | BDRV_O_UNMAP; |
ce099547 | 944 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
945 | if (ret < 0) { |
946 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 947 | return 1; |
661a0f71 FS |
948 | } |
949 | ||
ce099547 | 950 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 MA |
951 | if (!blk) { |
952 | return 1; | |
c2abccec | 953 | } |
7e7d56d9 MA |
954 | bs = blk_bs(blk); |
955 | ||
687fa1d8 HR |
956 | qemu_progress_init(progress, 1.f); |
957 | qemu_progress_print(0.f, 100); | |
958 | ||
1b22bffd HR |
959 | if (base) { |
960 | base_bs = bdrv_find_backing_image(bs, base); | |
961 | if (!base_bs) { | |
6b33f3ae HR |
962 | error_setg(&local_err, |
963 | "Did not find '%s' in the backing chain of '%s'", | |
964 | base, filename); | |
1b22bffd HR |
965 | goto done; |
966 | } | |
967 | } else { | |
968 | /* This is different from QMP, which by default uses the deepest file in | |
969 | * the backing chain (i.e., the very base); however, the traditional | |
970 | * behavior of qemu-img commit is using the immediate backing file. */ | |
760e0063 | 971 | base_bs = backing_bs(bs); |
1b22bffd HR |
972 | if (!base_bs) { |
973 | error_setg(&local_err, "Image does not have a backing file"); | |
974 | goto done; | |
975 | } | |
d4a3238a HR |
976 | } |
977 | ||
978 | cbi = (CommonBlockJobCBInfo){ | |
979 | .errp = &local_err, | |
980 | .bs = bs, | |
981 | }; | |
982 | ||
9e944cb4 PB |
983 | aio_context = bdrv_get_aio_context(bs); |
984 | aio_context_acquire(aio_context); | |
47970dfb | 985 | commit_active_start("commit", bs, base_bs, BLOCK_JOB_DEFAULT, 0, |
0db832f4 | 986 | BLOCKDEV_ON_ERROR_REPORT, NULL, common_block_job_cb, |
78bbd910 | 987 | &cbi, false, &local_err); |
9e944cb4 | 988 | aio_context_release(aio_context); |
d4a3238a HR |
989 | if (local_err) { |
990 | goto done; | |
ea2384d3 FB |
991 | } |
992 | ||
3f09bfbc KW |
993 | /* When the block job completes, the BlockBackend reference will point to |
994 | * the old backing file. In order to avoid that the top image is already | |
995 | * deleted, so we can still empty it afterwards, increment the reference | |
996 | * counter here preemptively. */ | |
9a86fe48 | 997 | if (!drop) { |
3f09bfbc | 998 | bdrv_ref(bs); |
9a86fe48 HR |
999 | } |
1000 | ||
4ef85a9c KW |
1001 | job = block_job_get("commit"); |
1002 | run_block_job(job, &local_err); | |
9a86fe48 HR |
1003 | if (local_err) { |
1004 | goto unref_backing; | |
1005 | } | |
1006 | ||
3f09bfbc KW |
1007 | if (!drop && bs->drv->bdrv_make_empty) { |
1008 | ret = bs->drv->bdrv_make_empty(bs); | |
9a86fe48 HR |
1009 | if (ret) { |
1010 | error_setg_errno(&local_err, -ret, "Could not empty %s", | |
1011 | filename); | |
1012 | goto unref_backing; | |
1013 | } | |
1014 | } | |
1015 | ||
1016 | unref_backing: | |
1017 | if (!drop) { | |
3f09bfbc | 1018 | bdrv_unref(bs); |
9a86fe48 | 1019 | } |
d4a3238a HR |
1020 | |
1021 | done: | |
687fa1d8 HR |
1022 | qemu_progress_end(); |
1023 | ||
26f54e9a | 1024 | blk_unref(blk); |
d4a3238a HR |
1025 | |
1026 | if (local_err) { | |
6936f299 | 1027 | error_report_err(local_err); |
c2abccec MK |
1028 | return 1; |
1029 | } | |
d4a3238a HR |
1030 | |
1031 | qprintf(quiet, "Image committed.\n"); | |
ea2384d3 FB |
1032 | return 0; |
1033 | } | |
1034 | ||
f58c7b35 TS |
1035 | /* |
1036 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
1037 | * a non-NUL byte. | |
1038 | * | |
1039 | * 'pnum' is set to the number of sectors (including and immediately following | |
1040 | * the first one) that are known to be in the same allocated/unallocated state. | |
1041 | */ | |
ea2384d3 FB |
1042 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
1043 | { | |
1a6d39fd SH |
1044 | bool is_zero; |
1045 | int i; | |
ea2384d3 FB |
1046 | |
1047 | if (n <= 0) { | |
1048 | *pnum = 0; | |
1049 | return 0; | |
1050 | } | |
1a6d39fd | 1051 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
1052 | for(i = 1; i < n; i++) { |
1053 | buf += 512; | |
1a6d39fd | 1054 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 1055 | break; |
1a6d39fd | 1056 | } |
ea2384d3 FB |
1057 | } |
1058 | *pnum = i; | |
1a6d39fd | 1059 | return !is_zero; |
ea2384d3 FB |
1060 | } |
1061 | ||
a22f123c KW |
1062 | /* |
1063 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
1064 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
1065 | * breaking up write requests for only small sparse areas. | |
1066 | */ | |
1067 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
1068 | int min) | |
1069 | { | |
1070 | int ret; | |
1071 | int num_checked, num_used; | |
1072 | ||
1073 | if (n < min) { | |
1074 | min = n; | |
1075 | } | |
1076 | ||
1077 | ret = is_allocated_sectors(buf, n, pnum); | |
1078 | if (!ret) { | |
1079 | return ret; | |
1080 | } | |
1081 | ||
1082 | num_used = *pnum; | |
1083 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1084 | n -= *pnum; | |
1085 | num_checked = num_used; | |
1086 | ||
1087 | while (n > 0) { | |
1088 | ret = is_allocated_sectors(buf, n, pnum); | |
1089 | ||
1090 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1091 | n -= *pnum; | |
1092 | num_checked += *pnum; | |
1093 | if (ret) { | |
1094 | num_used = num_checked; | |
1095 | } else if (*pnum >= min) { | |
1096 | break; | |
1097 | } | |
1098 | } | |
1099 | ||
1100 | *pnum = num_used; | |
1101 | return 1; | |
1102 | } | |
1103 | ||
3e85c6fd KW |
1104 | /* |
1105 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
1106 | * buffers matches, non-zero otherwise. | |
1107 | * | |
1108 | * pnum is set to the number of sectors (including and immediately following | |
1109 | * the first one) that are known to have the same comparison result | |
1110 | */ | |
1111 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
1112 | int *pnum) | |
1113 | { | |
8c1ac475 RK |
1114 | bool res; |
1115 | int i; | |
3e85c6fd KW |
1116 | |
1117 | if (n <= 0) { | |
1118 | *pnum = 0; | |
1119 | return 0; | |
1120 | } | |
1121 | ||
1122 | res = !!memcmp(buf1, buf2, 512); | |
1123 | for(i = 1; i < n; i++) { | |
1124 | buf1 += 512; | |
1125 | buf2 += 512; | |
1126 | ||
1127 | if (!!memcmp(buf1, buf2, 512) != res) { | |
1128 | break; | |
1129 | } | |
1130 | } | |
1131 | ||
1132 | *pnum = i; | |
1133 | return res; | |
1134 | } | |
1135 | ||
80ee15a6 | 1136 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 1137 | |
d14ed18c MR |
1138 | static int64_t sectors_to_bytes(int64_t sectors) |
1139 | { | |
1140 | return sectors << BDRV_SECTOR_BITS; | |
1141 | } | |
1142 | ||
1143 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
1144 | { | |
1145 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
1146 | } | |
1147 | ||
1148 | /* | |
1149 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
1150 | * | |
1151 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
1152 | * data and negative value on error. | |
1153 | * | |
f1d3cd79 | 1154 | * @param blk: BlockBackend for the image |
d14ed18c MR |
1155 | * @param sect_num: Number of first sector to check |
1156 | * @param sect_count: Number of sectors to check | |
1157 | * @param filename: Name of disk file we are checking (logging purpose) | |
1158 | * @param buffer: Allocated buffer for storing read data | |
1159 | * @param quiet: Flag for quiet mode | |
1160 | */ | |
f1d3cd79 | 1161 | static int check_empty_sectors(BlockBackend *blk, int64_t sect_num, |
d14ed18c MR |
1162 | int sect_count, const char *filename, |
1163 | uint8_t *buffer, bool quiet) | |
1164 | { | |
1165 | int pnum, ret = 0; | |
9166920a EB |
1166 | ret = blk_pread(blk, sect_num << BDRV_SECTOR_BITS, buffer, |
1167 | sect_count << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1168 | if (ret < 0) { |
1169 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
1170 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
1171 | return ret; | |
1172 | } | |
1173 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
1174 | if (ret || pnum != sect_count) { | |
1175 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
1176 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
1177 | return 1; | |
1178 | } | |
1179 | ||
1180 | return 0; | |
1181 | } | |
1182 | ||
1183 | /* | |
1184 | * Compares two images. Exit codes: | |
1185 | * | |
1186 | * 0 - Images are identical | |
1187 | * 1 - Images differ | |
1188 | * >1 - Error occurred | |
1189 | */ | |
1190 | static int img_compare(int argc, char **argv) | |
1191 | { | |
40055951 | 1192 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 1193 | BlockBackend *blk1, *blk2; |
d14ed18c MR |
1194 | BlockDriverState *bs1, *bs2; |
1195 | int64_t total_sectors1, total_sectors2; | |
1196 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
1197 | int pnum1, pnum2; | |
1198 | int allocated1, allocated2; | |
1199 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
1200 | bool progress = false, quiet = false, strict = false; | |
40055951 | 1201 | int flags; |
ce099547 | 1202 | bool writethrough; |
d14ed18c MR |
1203 | int64_t total_sectors; |
1204 | int64_t sector_num = 0; | |
1205 | int64_t nb_sectors; | |
1206 | int c, pnum; | |
d14ed18c | 1207 | uint64_t progress_base; |
eb769f74 | 1208 | bool image_opts = false; |
d14ed18c | 1209 | |
40055951 | 1210 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 1211 | for (;;) { |
3babeb15 DB |
1212 | static const struct option long_options[] = { |
1213 | {"help", no_argument, 0, 'h'}, | |
1214 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1215 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
1216 | {0, 0, 0, 0} |
1217 | }; | |
c9192973 | 1218 | c = getopt_long(argc, argv, ":hf:F:T:pqs", |
3babeb15 | 1219 | long_options, NULL); |
d14ed18c MR |
1220 | if (c == -1) { |
1221 | break; | |
1222 | } | |
1223 | switch (c) { | |
c9192973 SH |
1224 | case ':': |
1225 | missing_argument(argv[optind - 1]); | |
1226 | break; | |
d14ed18c | 1227 | case '?': |
c9192973 SH |
1228 | unrecognized_option(argv[optind - 1]); |
1229 | break; | |
d14ed18c MR |
1230 | case 'h': |
1231 | help(); | |
1232 | break; | |
1233 | case 'f': | |
1234 | fmt1 = optarg; | |
1235 | break; | |
1236 | case 'F': | |
1237 | fmt2 = optarg; | |
1238 | break; | |
40055951 HR |
1239 | case 'T': |
1240 | cache = optarg; | |
1241 | break; | |
d14ed18c MR |
1242 | case 'p': |
1243 | progress = true; | |
1244 | break; | |
1245 | case 'q': | |
1246 | quiet = true; | |
1247 | break; | |
1248 | case 's': | |
1249 | strict = true; | |
1250 | break; | |
3babeb15 DB |
1251 | case OPTION_OBJECT: { |
1252 | QemuOpts *opts; | |
1253 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1254 | optarg, true); | |
1255 | if (!opts) { | |
1256 | ret = 2; | |
1257 | goto out4; | |
1258 | } | |
1259 | } break; | |
eb769f74 DB |
1260 | case OPTION_IMAGE_OPTS: |
1261 | image_opts = true; | |
1262 | break; | |
d14ed18c MR |
1263 | } |
1264 | } | |
1265 | ||
1266 | /* Progress is not shown in Quiet mode */ | |
1267 | if (quiet) { | |
1268 | progress = false; | |
1269 | } | |
1270 | ||
1271 | ||
fc11eb26 | 1272 | if (optind != argc - 2) { |
ac1307ab | 1273 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1274 | } |
1275 | filename1 = argv[optind++]; | |
1276 | filename2 = argv[optind++]; | |
1277 | ||
3babeb15 DB |
1278 | if (qemu_opts_foreach(&qemu_object_opts, |
1279 | user_creatable_add_opts_foreach, | |
51b9b478 | 1280 | NULL, NULL)) { |
3babeb15 DB |
1281 | ret = 2; |
1282 | goto out4; | |
1283 | } | |
1284 | ||
cbda016d SH |
1285 | /* Initialize before goto out */ |
1286 | qemu_progress_init(progress, 2.0); | |
1287 | ||
ce099547 KW |
1288 | flags = 0; |
1289 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
40055951 HR |
1290 | if (ret < 0) { |
1291 | error_report("Invalid source cache option: %s", cache); | |
1292 | ret = 2; | |
1293 | goto out3; | |
1294 | } | |
1295 | ||
ce099547 | 1296 | blk1 = img_open(image_opts, filename1, fmt1, flags, writethrough, quiet); |
7e7d56d9 | 1297 | if (!blk1) { |
d14ed18c | 1298 | ret = 2; |
7e7d56d9 | 1299 | goto out3; |
d14ed18c MR |
1300 | } |
1301 | ||
ce099547 | 1302 | blk2 = img_open(image_opts, filename2, fmt2, flags, writethrough, quiet); |
7e7d56d9 | 1303 | if (!blk2) { |
d14ed18c | 1304 | ret = 2; |
7e7d56d9 | 1305 | goto out2; |
d14ed18c | 1306 | } |
eb769f74 | 1307 | bs1 = blk_bs(blk1); |
7e7d56d9 | 1308 | bs2 = blk_bs(blk2); |
d14ed18c | 1309 | |
f1d3cd79 HR |
1310 | buf1 = blk_blockalign(blk1, IO_BUF_SIZE); |
1311 | buf2 = blk_blockalign(blk2, IO_BUF_SIZE); | |
1312 | total_sectors1 = blk_nb_sectors(blk1); | |
52bf1e72 MA |
1313 | if (total_sectors1 < 0) { |
1314 | error_report("Can't get size of %s: %s", | |
1315 | filename1, strerror(-total_sectors1)); | |
1316 | ret = 4; | |
1317 | goto out; | |
1318 | } | |
f1d3cd79 | 1319 | total_sectors2 = blk_nb_sectors(blk2); |
52bf1e72 MA |
1320 | if (total_sectors2 < 0) { |
1321 | error_report("Can't get size of %s: %s", | |
1322 | filename2, strerror(-total_sectors2)); | |
1323 | ret = 4; | |
1324 | goto out; | |
1325 | } | |
d14ed18c MR |
1326 | total_sectors = MIN(total_sectors1, total_sectors2); |
1327 | progress_base = MAX(total_sectors1, total_sectors2); | |
1328 | ||
1329 | qemu_progress_print(0, 100); | |
1330 | ||
1331 | if (strict && total_sectors1 != total_sectors2) { | |
1332 | ret = 1; | |
1333 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1334 | goto out; | |
1335 | } | |
1336 | ||
1337 | for (;;) { | |
25ad8e6e | 1338 | int64_t status1, status2; |
67a0fd2a FZ |
1339 | BlockDriverState *file; |
1340 | ||
d14ed18c MR |
1341 | nb_sectors = sectors_to_process(total_sectors, sector_num); |
1342 | if (nb_sectors <= 0) { | |
1343 | break; | |
1344 | } | |
25ad8e6e FZ |
1345 | status1 = bdrv_get_block_status_above(bs1, NULL, sector_num, |
1346 | total_sectors1 - sector_num, | |
67a0fd2a | 1347 | &pnum1, &file); |
25ad8e6e | 1348 | if (status1 < 0) { |
d14ed18c MR |
1349 | ret = 3; |
1350 | error_report("Sector allocation test failed for %s", filename1); | |
1351 | goto out; | |
1352 | } | |
25ad8e6e | 1353 | allocated1 = status1 & BDRV_BLOCK_ALLOCATED; |
d14ed18c | 1354 | |
25ad8e6e FZ |
1355 | status2 = bdrv_get_block_status_above(bs2, NULL, sector_num, |
1356 | total_sectors2 - sector_num, | |
67a0fd2a | 1357 | &pnum2, &file); |
25ad8e6e | 1358 | if (status2 < 0) { |
d14ed18c MR |
1359 | ret = 3; |
1360 | error_report("Sector allocation test failed for %s", filename2); | |
1361 | goto out; | |
1362 | } | |
25ad8e6e FZ |
1363 | allocated2 = status2 & BDRV_BLOCK_ALLOCATED; |
1364 | if (pnum1) { | |
1365 | nb_sectors = MIN(nb_sectors, pnum1); | |
1366 | } | |
1367 | if (pnum2) { | |
1368 | nb_sectors = MIN(nb_sectors, pnum2); | |
1369 | } | |
d14ed18c | 1370 | |
25ad8e6e FZ |
1371 | if (strict) { |
1372 | if ((status1 & ~BDRV_BLOCK_OFFSET_MASK) != | |
1373 | (status2 & ~BDRV_BLOCK_OFFSET_MASK)) { | |
1374 | ret = 1; | |
1375 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1376 | " block status mismatch!\n", | |
1377 | sectors_to_bytes(sector_num)); | |
1378 | goto out; | |
1379 | } | |
1380 | } | |
1381 | if ((status1 & BDRV_BLOCK_ZERO) && (status2 & BDRV_BLOCK_ZERO)) { | |
1382 | nb_sectors = MIN(pnum1, pnum2); | |
1383 | } else if (allocated1 == allocated2) { | |
d14ed18c | 1384 | if (allocated1) { |
9166920a EB |
1385 | ret = blk_pread(blk1, sector_num << BDRV_SECTOR_BITS, buf1, |
1386 | nb_sectors << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1387 | if (ret < 0) { |
1388 | error_report("Error while reading offset %" PRId64 " of %s:" | |
1389 | " %s", sectors_to_bytes(sector_num), filename1, | |
1390 | strerror(-ret)); | |
1391 | ret = 4; | |
1392 | goto out; | |
1393 | } | |
9166920a EB |
1394 | ret = blk_pread(blk2, sector_num << BDRV_SECTOR_BITS, buf2, |
1395 | nb_sectors << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1396 | if (ret < 0) { |
1397 | error_report("Error while reading offset %" PRId64 | |
1398 | " of %s: %s", sectors_to_bytes(sector_num), | |
1399 | filename2, strerror(-ret)); | |
1400 | ret = 4; | |
1401 | goto out; | |
1402 | } | |
1403 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1404 | if (ret || pnum != nb_sectors) { | |
d14ed18c MR |
1405 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1406 | sectors_to_bytes( | |
1407 | ret ? sector_num : sector_num + pnum)); | |
36452f12 | 1408 | ret = 1; |
d14ed18c MR |
1409 | goto out; |
1410 | } | |
1411 | } | |
1412 | } else { | |
d14ed18c MR |
1413 | |
1414 | if (allocated1) { | |
f1d3cd79 | 1415 | ret = check_empty_sectors(blk1, sector_num, nb_sectors, |
d14ed18c MR |
1416 | filename1, buf1, quiet); |
1417 | } else { | |
f1d3cd79 | 1418 | ret = check_empty_sectors(blk2, sector_num, nb_sectors, |
d14ed18c MR |
1419 | filename2, buf1, quiet); |
1420 | } | |
1421 | if (ret) { | |
1422 | if (ret < 0) { | |
d14ed18c MR |
1423 | error_report("Error while reading offset %" PRId64 ": %s", |
1424 | sectors_to_bytes(sector_num), strerror(-ret)); | |
36452f12 | 1425 | ret = 4; |
d14ed18c MR |
1426 | } |
1427 | goto out; | |
1428 | } | |
1429 | } | |
1430 | sector_num += nb_sectors; | |
1431 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1432 | } | |
1433 | ||
1434 | if (total_sectors1 != total_sectors2) { | |
f1d3cd79 | 1435 | BlockBackend *blk_over; |
d14ed18c MR |
1436 | int64_t total_sectors_over; |
1437 | const char *filename_over; | |
1438 | ||
1439 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1440 | if (total_sectors1 > total_sectors2) { | |
1441 | total_sectors_over = total_sectors1; | |
f1d3cd79 | 1442 | blk_over = blk1; |
d14ed18c MR |
1443 | filename_over = filename1; |
1444 | } else { | |
1445 | total_sectors_over = total_sectors2; | |
f1d3cd79 | 1446 | blk_over = blk2; |
d14ed18c MR |
1447 | filename_over = filename2; |
1448 | } | |
1449 | ||
1450 | for (;;) { | |
1451 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1452 | if (nb_sectors <= 0) { | |
1453 | break; | |
1454 | } | |
f1d3cd79 | 1455 | ret = bdrv_is_allocated_above(blk_bs(blk_over), NULL, sector_num, |
d14ed18c MR |
1456 | nb_sectors, &pnum); |
1457 | if (ret < 0) { | |
1458 | ret = 3; | |
1459 | error_report("Sector allocation test failed for %s", | |
1460 | filename_over); | |
1461 | goto out; | |
1462 | ||
1463 | } | |
1464 | nb_sectors = pnum; | |
1465 | if (ret) { | |
f1d3cd79 | 1466 | ret = check_empty_sectors(blk_over, sector_num, nb_sectors, |
d14ed18c MR |
1467 | filename_over, buf1, quiet); |
1468 | if (ret) { | |
1469 | if (ret < 0) { | |
d14ed18c MR |
1470 | error_report("Error while reading offset %" PRId64 |
1471 | " of %s: %s", sectors_to_bytes(sector_num), | |
1472 | filename_over, strerror(-ret)); | |
36452f12 | 1473 | ret = 4; |
d14ed18c MR |
1474 | } |
1475 | goto out; | |
1476 | } | |
1477 | } | |
1478 | sector_num += nb_sectors; | |
1479 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1480 | } | |
1481 | } | |
1482 | ||
1483 | qprintf(quiet, "Images are identical.\n"); | |
1484 | ret = 0; | |
1485 | ||
1486 | out: | |
d14ed18c MR |
1487 | qemu_vfree(buf1); |
1488 | qemu_vfree(buf2); | |
26f54e9a | 1489 | blk_unref(blk2); |
d14ed18c | 1490 | out2: |
26f54e9a | 1491 | blk_unref(blk1); |
d14ed18c MR |
1492 | out3: |
1493 | qemu_progress_end(); | |
3babeb15 | 1494 | out4: |
d14ed18c MR |
1495 | return ret; |
1496 | } | |
1497 | ||
690c7301 KW |
1498 | enum ImgConvertBlockStatus { |
1499 | BLK_DATA, | |
1500 | BLK_ZERO, | |
1501 | BLK_BACKING_FILE, | |
1502 | }; | |
1503 | ||
2d9187bc PL |
1504 | #define MAX_COROUTINES 16 |
1505 | ||
690c7301 KW |
1506 | typedef struct ImgConvertState { |
1507 | BlockBackend **src; | |
1508 | int64_t *src_sectors; | |
2d9187bc | 1509 | int src_num; |
690c7301 KW |
1510 | int64_t total_sectors; |
1511 | int64_t allocated_sectors; | |
2d9187bc PL |
1512 | int64_t allocated_done; |
1513 | int64_t sector_num; | |
1514 | int64_t wr_offs; | |
690c7301 KW |
1515 | enum ImgConvertBlockStatus status; |
1516 | int64_t sector_next_status; | |
1517 | BlockBackend *target; | |
1518 | bool has_zero_init; | |
1519 | bool compressed; | |
1520 | bool target_has_backing; | |
2d9187bc | 1521 | bool wr_in_order; |
690c7301 KW |
1522 | int min_sparse; |
1523 | size_t cluster_sectors; | |
1524 | size_t buf_sectors; | |
9fd77f99 | 1525 | long num_coroutines; |
2d9187bc PL |
1526 | int running_coroutines; |
1527 | Coroutine *co[MAX_COROUTINES]; | |
1528 | int64_t wait_sector_num[MAX_COROUTINES]; | |
1529 | CoMutex lock; | |
1530 | int ret; | |
690c7301 KW |
1531 | } ImgConvertState; |
1532 | ||
2d9187bc PL |
1533 | static void convert_select_part(ImgConvertState *s, int64_t sector_num, |
1534 | int *src_cur, int64_t *src_cur_offset) | |
690c7301 | 1535 | { |
2d9187bc PL |
1536 | *src_cur = 0; |
1537 | *src_cur_offset = 0; | |
1538 | while (sector_num - *src_cur_offset >= s->src_sectors[*src_cur]) { | |
1539 | *src_cur_offset += s->src_sectors[*src_cur]; | |
1540 | (*src_cur)++; | |
1541 | assert(*src_cur < s->src_num); | |
690c7301 KW |
1542 | } |
1543 | } | |
1544 | ||
1545 | static int convert_iteration_sectors(ImgConvertState *s, int64_t sector_num) | |
1546 | { | |
2d9187bc PL |
1547 | int64_t ret, src_cur_offset; |
1548 | int n, src_cur; | |
690c7301 | 1549 | |
2d9187bc | 1550 | convert_select_part(s, sector_num, &src_cur, &src_cur_offset); |
690c7301 KW |
1551 | |
1552 | assert(s->total_sectors > sector_num); | |
1553 | n = MIN(s->total_sectors - sector_num, BDRV_REQUEST_MAX_SECTORS); | |
1554 | ||
1555 | if (s->sector_next_status <= sector_num) { | |
67a0fd2a | 1556 | BlockDriverState *file; |
2d9187bc PL |
1557 | ret = bdrv_get_block_status(blk_bs(s->src[src_cur]), |
1558 | sector_num - src_cur_offset, | |
67a0fd2a | 1559 | n, &n, &file); |
690c7301 KW |
1560 | if (ret < 0) { |
1561 | return ret; | |
1562 | } | |
1563 | ||
1564 | if (ret & BDRV_BLOCK_ZERO) { | |
1565 | s->status = BLK_ZERO; | |
1566 | } else if (ret & BDRV_BLOCK_DATA) { | |
1567 | s->status = BLK_DATA; | |
1568 | } else if (!s->target_has_backing) { | |
1569 | /* Without a target backing file we must copy over the contents of | |
1570 | * the backing file as well. */ | |
263a6f4c | 1571 | /* Check block status of the backing file chain to avoid |
690c7301 KW |
1572 | * needlessly reading zeroes and limiting the iteration to the |
1573 | * buffer size */ | |
2d9187bc PL |
1574 | ret = bdrv_get_block_status_above(blk_bs(s->src[src_cur]), NULL, |
1575 | sector_num - src_cur_offset, | |
263a6f4c RK |
1576 | n, &n, &file); |
1577 | if (ret < 0) { | |
1578 | return ret; | |
1579 | } | |
1580 | ||
1581 | if (ret & BDRV_BLOCK_ZERO) { | |
1582 | s->status = BLK_ZERO; | |
1583 | } else { | |
1584 | s->status = BLK_DATA; | |
1585 | } | |
690c7301 KW |
1586 | } else { |
1587 | s->status = BLK_BACKING_FILE; | |
1588 | } | |
1589 | ||
1590 | s->sector_next_status = sector_num + n; | |
1591 | } | |
1592 | ||
1593 | n = MIN(n, s->sector_next_status - sector_num); | |
1594 | if (s->status == BLK_DATA) { | |
1595 | n = MIN(n, s->buf_sectors); | |
1596 | } | |
1597 | ||
1598 | /* We need to write complete clusters for compressed images, so if an | |
1599 | * unallocated area is shorter than that, we must consider the whole | |
1600 | * cluster allocated. */ | |
1601 | if (s->compressed) { | |
1602 | if (n < s->cluster_sectors) { | |
1603 | n = MIN(s->cluster_sectors, s->total_sectors - sector_num); | |
1604 | s->status = BLK_DATA; | |
1605 | } else { | |
1606 | n = QEMU_ALIGN_DOWN(n, s->cluster_sectors); | |
1607 | } | |
1608 | } | |
1609 | ||
1610 | return n; | |
1611 | } | |
1612 | ||
2d9187bc PL |
1613 | static int coroutine_fn convert_co_read(ImgConvertState *s, int64_t sector_num, |
1614 | int nb_sectors, uint8_t *buf) | |
690c7301 | 1615 | { |
2d9187bc PL |
1616 | int n, ret; |
1617 | QEMUIOVector qiov; | |
1618 | struct iovec iov; | |
690c7301 | 1619 | |
690c7301 KW |
1620 | assert(nb_sectors <= s->buf_sectors); |
1621 | while (nb_sectors > 0) { | |
1622 | BlockBackend *blk; | |
2d9187bc PL |
1623 | int src_cur; |
1624 | int64_t bs_sectors, src_cur_offset; | |
690c7301 KW |
1625 | |
1626 | /* In the case of compression with multiple source files, we can get a | |
1627 | * nb_sectors that spreads into the next part. So we must be able to | |
1628 | * read across multiple BDSes for one convert_read() call. */ | |
2d9187bc PL |
1629 | convert_select_part(s, sector_num, &src_cur, &src_cur_offset); |
1630 | blk = s->src[src_cur]; | |
1631 | bs_sectors = s->src_sectors[src_cur]; | |
1632 | ||
1633 | n = MIN(nb_sectors, bs_sectors - (sector_num - src_cur_offset)); | |
1634 | iov.iov_base = buf; | |
1635 | iov.iov_len = n << BDRV_SECTOR_BITS; | |
1636 | qemu_iovec_init_external(&qiov, &iov, 1); | |
1637 | ||
1638 | ret = blk_co_preadv( | |
1639 | blk, (sector_num - src_cur_offset) << BDRV_SECTOR_BITS, | |
1640 | n << BDRV_SECTOR_BITS, &qiov, 0); | |
690c7301 KW |
1641 | if (ret < 0) { |
1642 | return ret; | |
1643 | } | |
1644 | ||
1645 | sector_num += n; | |
1646 | nb_sectors -= n; | |
1647 | buf += n * BDRV_SECTOR_SIZE; | |
1648 | } | |
1649 | ||
1650 | return 0; | |
1651 | } | |
1652 | ||
2d9187bc PL |
1653 | |
1654 | static int coroutine_fn convert_co_write(ImgConvertState *s, int64_t sector_num, | |
1655 | int nb_sectors, uint8_t *buf, | |
1656 | enum ImgConvertBlockStatus status) | |
690c7301 KW |
1657 | { |
1658 | int ret; | |
2d9187bc PL |
1659 | QEMUIOVector qiov; |
1660 | struct iovec iov; | |
690c7301 KW |
1661 | |
1662 | while (nb_sectors > 0) { | |
1663 | int n = nb_sectors; | |
2d9187bc | 1664 | switch (status) { |
690c7301 KW |
1665 | case BLK_BACKING_FILE: |
1666 | /* If we have a backing file, leave clusters unallocated that are | |
1667 | * unallocated in the source image, so that the backing file is | |
1668 | * visible at the respective offset. */ | |
1669 | assert(s->target_has_backing); | |
1670 | break; | |
1671 | ||
1672 | case BLK_DATA: | |
1673 | /* We must always write compressed clusters as a whole, so don't | |
1674 | * try to find zeroed parts in the buffer. We can only save the | |
1675 | * write if the buffer is completely zeroed and we're allowed to | |
1676 | * keep the target sparse. */ | |
1677 | if (s->compressed) { | |
1678 | if (s->has_zero_init && s->min_sparse && | |
1679 | buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) | |
1680 | { | |
1681 | assert(!s->target_has_backing); | |
1682 | break; | |
1683 | } | |
1684 | ||
2d9187bc PL |
1685 | iov.iov_base = buf; |
1686 | iov.iov_len = n << BDRV_SECTOR_BITS; | |
1687 | qemu_iovec_init_external(&qiov, &iov, 1); | |
1688 | ||
1689 | ret = blk_co_pwritev(s->target, sector_num << BDRV_SECTOR_BITS, | |
1690 | n << BDRV_SECTOR_BITS, &qiov, | |
1691 | BDRV_REQ_WRITE_COMPRESSED); | |
690c7301 KW |
1692 | if (ret < 0) { |
1693 | return ret; | |
1694 | } | |
1695 | break; | |
1696 | } | |
1697 | ||
1698 | /* If there is real non-zero data or we're told to keep the target | |
1699 | * fully allocated (-S 0), we must write it. Otherwise we can treat | |
1700 | * it as zero sectors. */ | |
1701 | if (!s->min_sparse || | |
1702 | is_allocated_sectors_min(buf, n, &n, s->min_sparse)) | |
1703 | { | |
2d9187bc PL |
1704 | iov.iov_base = buf; |
1705 | iov.iov_len = n << BDRV_SECTOR_BITS; | |
1706 | qemu_iovec_init_external(&qiov, &iov, 1); | |
1707 | ||
1708 | ret = blk_co_pwritev(s->target, sector_num << BDRV_SECTOR_BITS, | |
1709 | n << BDRV_SECTOR_BITS, &qiov, 0); | |
690c7301 KW |
1710 | if (ret < 0) { |
1711 | return ret; | |
1712 | } | |
1713 | break; | |
1714 | } | |
1715 | /* fall-through */ | |
1716 | ||
1717 | case BLK_ZERO: | |
1718 | if (s->has_zero_init) { | |
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); | |
1764 | goto out; | |
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; | |
1770 | goto out; | |
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; | |
1795 | goto out; | |
1796 | } | |
1797 | } else if (!s->min_sparse && status == BLK_ZERO) { | |
1798 | status = BLK_DATA; | |
1799 | memset(buf, 0x00, n * BDRV_SECTOR_SIZE); | |
1800 | } | |
1801 | ||
1802 | if (s->wr_in_order) { | |
1803 | /* keep writes in order */ | |
1804 | while (s->wr_offs != sector_num) { | |
1805 | if (s->ret != -EINPROGRESS) { | |
1806 | goto out; | |
1807 | } | |
1808 | s->wait_sector_num[index] = sector_num; | |
1809 | qemu_coroutine_yield(); | |
1810 | } | |
1811 | s->wait_sector_num[index] = -1; | |
1812 | } | |
1813 | ||
1814 | ret = convert_co_write(s, sector_num, n, buf, status); | |
1815 | if (ret < 0) { | |
1816 | error_report("error while writing sector %" PRId64 | |
1817 | ": %s", sector_num, strerror(-ret)); | |
1818 | s->ret = ret; | |
1819 | goto out; | |
1820 | } | |
1821 | ||
1822 | if (s->wr_in_order) { | |
1823 | /* reenter the coroutine that might have waited | |
1824 | * for this write to complete */ | |
1825 | s->wr_offs = sector_num + n; | |
1826 | for (i = 0; i < s->num_coroutines; i++) { | |
1827 | if (s->co[i] && s->wait_sector_num[i] == s->wr_offs) { | |
1828 | /* | |
1829 | * A -> B -> A cannot occur because A has | |
1830 | * s->wait_sector_num[i] == -1 during A -> B. Therefore | |
1831 | * B will never enter A during this time window. | |
1832 | */ | |
1833 | qemu_coroutine_enter(s->co[i]); | |
1834 | break; | |
1835 | } | |
1836 | } | |
1837 | } | |
1838 | } | |
1839 | ||
1840 | out: | |
1841 | qemu_vfree(buf); | |
1842 | s->co[index] = NULL; | |
1843 | s->running_coroutines--; | |
1844 | if (!s->running_coroutines && s->ret == -EINPROGRESS) { | |
1845 | /* the convert job finished successfully */ | |
1846 | s->ret = 0; | |
1847 | } | |
1848 | } | |
1849 | ||
1850 | static int convert_do_copy(ImgConvertState *s) | |
1851 | { | |
1852 | int ret, i, n; | |
1853 | int64_t sector_num = 0; | |
690c7301 KW |
1854 | |
1855 | /* Check whether we have zero initialisation or can get it efficiently */ | |
1856 | s->has_zero_init = s->min_sparse && !s->target_has_backing | |
1857 | ? bdrv_has_zero_init(blk_bs(s->target)) | |
1858 | : false; | |
1859 | ||
1860 | if (!s->has_zero_init && !s->target_has_backing && | |
1861 | bdrv_can_write_zeroes_with_unmap(blk_bs(s->target))) | |
1862 | { | |
720ff280 | 1863 | ret = blk_make_zero(s->target, BDRV_REQ_MAY_UNMAP); |
690c7301 KW |
1864 | if (ret == 0) { |
1865 | s->has_zero_init = true; | |
1866 | } | |
1867 | } | |
1868 | ||
1869 | /* Allocate buffer for copied data. For compressed images, only one cluster | |
1870 | * can be copied at a time. */ | |
1871 | if (s->compressed) { | |
1872 | if (s->cluster_sectors <= 0 || s->cluster_sectors > s->buf_sectors) { | |
1873 | error_report("invalid cluster size"); | |
2d9187bc | 1874 | return -EINVAL; |
690c7301 KW |
1875 | } |
1876 | s->buf_sectors = s->cluster_sectors; | |
1877 | } | |
690c7301 | 1878 | |
690c7301 KW |
1879 | while (sector_num < s->total_sectors) { |
1880 | n = convert_iteration_sectors(s, sector_num); | |
1881 | if (n < 0) { | |
2d9187bc | 1882 | return n; |
690c7301 | 1883 | } |
aad15de4 HR |
1884 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
1885 | { | |
690c7301 KW |
1886 | s->allocated_sectors += n; |
1887 | } | |
1888 | sector_num += n; | |
1889 | } | |
1890 | ||
1891 | /* Do the copy */ | |
690c7301 | 1892 | s->sector_next_status = 0; |
2d9187bc | 1893 | s->ret = -EINPROGRESS; |
690c7301 | 1894 | |
2d9187bc PL |
1895 | qemu_co_mutex_init(&s->lock); |
1896 | for (i = 0; i < s->num_coroutines; i++) { | |
1897 | s->co[i] = qemu_coroutine_create(convert_co_do_copy, s); | |
1898 | s->wait_sector_num[i] = -1; | |
1899 | qemu_coroutine_enter(s->co[i]); | |
1900 | } | |
690c7301 | 1901 | |
2d9187bc PL |
1902 | while (s->ret == -EINPROGRESS) { |
1903 | main_loop_wait(false); | |
690c7301 KW |
1904 | } |
1905 | ||
2d9187bc | 1906 | if (s->compressed && !s->ret) { |
690c7301 | 1907 | /* signal EOF to align */ |
fe5c1355 | 1908 | ret = blk_pwrite_compressed(s->target, 0, NULL, 0); |
690c7301 | 1909 | if (ret < 0) { |
2d9187bc | 1910 | return ret; |
690c7301 KW |
1911 | } |
1912 | } | |
1913 | ||
2d9187bc | 1914 | return s->ret; |
690c7301 KW |
1915 | } |
1916 | ||
ea2384d3 FB |
1917 | static int img_convert(int argc, char **argv) |
1918 | { | |
9fd77f99 PL |
1919 | int c, bs_i, flags, src_flags = 0; |
1920 | const char *fmt = NULL, *out_fmt = "raw", *cache = "unsafe", | |
1921 | *src_cache = BDRV_DEFAULT_CACHE, *out_baseimg = NULL, | |
1922 | *out_filename, *out_baseimg_param, *snapshot_name = NULL; | |
b50cbabc | 1923 | BlockDriver *drv, *proto_drv; |
faea38e7 | 1924 | BlockDriverInfo bdi; |
9fd77f99 PL |
1925 | BlockDriverState *out_bs; |
1926 | QemuOpts *opts = NULL, *sn_opts = NULL; | |
83d0521a | 1927 | QemuOptsList *create_opts = NULL; |
efa84d43 | 1928 | char *options = NULL; |
cc84d90f | 1929 | Error *local_err = NULL; |
9fd77f99 PL |
1930 | bool writethrough, src_writethrough, quiet = false, image_opts = false, |
1931 | skip_create = false, progress = false; | |
1932 | int64_t ret = -EINVAL; | |
1933 | ||
1934 | ImgConvertState s = (ImgConvertState) { | |
1935 | /* Need at least 4k of zeros for sparse detection */ | |
1936 | .min_sparse = 8, | |
1937 | .buf_sectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE, | |
1938 | .wr_in_order = true, | |
1939 | .num_coroutines = 8, | |
1940 | }; | |
ea2384d3 | 1941 | |
ea2384d3 | 1942 | for(;;) { |
3babeb15 DB |
1943 | static const struct option long_options[] = { |
1944 | {"help", no_argument, 0, 'h'}, | |
1945 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1946 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
1947 | {0, 0, 0, 0} |
1948 | }; | |
c9192973 | 1949 | c = getopt_long(argc, argv, ":hf:O:B:ce6o:s:l:S:pt:T:qnm:W", |
3babeb15 | 1950 | long_options, NULL); |
b8fb60da | 1951 | if (c == -1) { |
ea2384d3 | 1952 | break; |
b8fb60da | 1953 | } |
ea2384d3 | 1954 | switch(c) { |
c9192973 SH |
1955 | case ':': |
1956 | missing_argument(argv[optind - 1]); | |
1957 | break; | |
ef87394c | 1958 | case '?': |
c9192973 SH |
1959 | unrecognized_option(argv[optind - 1]); |
1960 | break; | |
ea2384d3 FB |
1961 | case 'h': |
1962 | help(); | |
1963 | break; | |
1964 | case 'f': | |
1965 | fmt = optarg; | |
1966 | break; | |
1967 | case 'O': | |
1968 | out_fmt = optarg; | |
1969 | break; | |
f58c7b35 TS |
1970 | case 'B': |
1971 | out_baseimg = optarg; | |
1972 | break; | |
ea2384d3 | 1973 | case 'c': |
9fd77f99 | 1974 | s.compressed = true; |
ea2384d3 FB |
1975 | break; |
1976 | case 'e': | |
9d42e15d | 1977 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 1978 | "encryption\' instead!"); |
64bb01aa | 1979 | goto fail_getopt; |
ec36ba14 | 1980 | case '6': |
9d42e15d | 1981 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 1982 | "compat6\' instead!"); |
64bb01aa | 1983 | goto fail_getopt; |
efa84d43 | 1984 | case 'o': |
2dc8328b KW |
1985 | if (!is_valid_option_list(optarg)) { |
1986 | error_report("Invalid option list: %s", optarg); | |
64bb01aa | 1987 | goto fail_getopt; |
2dc8328b KW |
1988 | } |
1989 | if (!options) { | |
1990 | options = g_strdup(optarg); | |
1991 | } else { | |
1992 | char *old_options = options; | |
1993 | options = g_strdup_printf("%s,%s", options, optarg); | |
1994 | g_free(old_options); | |
1995 | } | |
efa84d43 | 1996 | break; |
51ef6727 | 1997 | case 's': |
1998 | snapshot_name = optarg; | |
1999 | break; | |
ef80654d WX |
2000 | case 'l': |
2001 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
70b94331 MA |
2002 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, |
2003 | optarg, false); | |
ef80654d WX |
2004 | if (!sn_opts) { |
2005 | error_report("Failed in parsing snapshot param '%s'", | |
2006 | optarg); | |
64bb01aa | 2007 | goto fail_getopt; |
ef80654d WX |
2008 | } |
2009 | } else { | |
2010 | snapshot_name = optarg; | |
2011 | } | |
2012 | break; | |
a22f123c KW |
2013 | case 'S': |
2014 | { | |
2015 | int64_t sval; | |
606caa0a MA |
2016 | |
2017 | sval = cvtnum(optarg); | |
2018 | if (sval < 0) { | |
a22f123c | 2019 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
64bb01aa | 2020 | goto fail_getopt; |
a22f123c KW |
2021 | } |
2022 | ||
9fd77f99 | 2023 | s.min_sparse = sval / BDRV_SECTOR_SIZE; |
a22f123c KW |
2024 | break; |
2025 | } | |
6b837bc4 | 2026 | case 'p': |
9fd77f99 | 2027 | progress = true; |
6b837bc4 | 2028 | break; |
661a0f71 FS |
2029 | case 't': |
2030 | cache = optarg; | |
2031 | break; | |
40055951 HR |
2032 | case 'T': |
2033 | src_cache = optarg; | |
2034 | break; | |
f382d43a MR |
2035 | case 'q': |
2036 | quiet = true; | |
2037 | break; | |
b2e10493 | 2038 | case 'n': |
9fd77f99 | 2039 | skip_create = true; |
b2e10493 | 2040 | break; |
2d9187bc | 2041 | case 'm': |
9fd77f99 PL |
2042 | if (qemu_strtol(optarg, NULL, 0, &s.num_coroutines) || |
2043 | s.num_coroutines < 1 || s.num_coroutines > MAX_COROUTINES) { | |
2d9187bc PL |
2044 | error_report("Invalid number of coroutines. Allowed number of" |
2045 | " coroutines is between 1 and %d", MAX_COROUTINES); | |
2d9187bc PL |
2046 | goto fail_getopt; |
2047 | } | |
2048 | break; | |
2049 | case 'W': | |
9fd77f99 | 2050 | s.wr_in_order = false; |
2d9187bc | 2051 | break; |
3258b911 HR |
2052 | case OPTION_OBJECT: { |
2053 | QemuOpts *object_opts; | |
2054 | object_opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2055 | optarg, true); | |
2056 | if (!object_opts) { | |
3babeb15 DB |
2057 | goto fail_getopt; |
2058 | } | |
2059 | break; | |
3258b911 | 2060 | } |
eb769f74 DB |
2061 | case OPTION_IMAGE_OPTS: |
2062 | image_opts = true; | |
2063 | break; | |
ea2384d3 FB |
2064 | } |
2065 | } | |
3b46e624 | 2066 | |
3babeb15 DB |
2067 | if (qemu_opts_foreach(&qemu_object_opts, |
2068 | user_creatable_add_opts_foreach, | |
51b9b478 | 2069 | NULL, NULL)) { |
3babeb15 DB |
2070 | goto fail_getopt; |
2071 | } | |
2072 | ||
9fd77f99 | 2073 | if (!s.wr_in_order && s.compressed) { |
2d9187bc | 2074 | error_report("Out of order write and compress are mutually exclusive"); |
2d9187bc PL |
2075 | goto fail_getopt; |
2076 | } | |
2077 | ||
9fd77f99 PL |
2078 | s.src_num = argc - optind - 1; |
2079 | out_filename = s.src_num >= 1 ? argv[argc - 1] : NULL; | |
f58c7b35 | 2080 | |
2dc8328b | 2081 | if (options && has_help_option(options)) { |
4ac8aacd | 2082 | ret = print_block_option_help(out_filename, out_fmt); |
9fd77f99 | 2083 | goto fail_getopt; |
4ac8aacd JS |
2084 | } |
2085 | ||
9fd77f99 PL |
2086 | if (s.src_num < 1) { |
2087 | error_report("Must specify image file name"); | |
2088 | goto fail_getopt; | |
a283cb6e KW |
2089 | } |
2090 | ||
2091 | ||
9fd77f99 | 2092 | /* ret is still -EINVAL until here */ |
ce099547 | 2093 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); |
40055951 HR |
2094 | if (ret < 0) { |
2095 | error_report("Invalid source cache option: %s", src_cache); | |
9fd77f99 | 2096 | goto fail_getopt; |
40055951 HR |
2097 | } |
2098 | ||
9fd77f99 PL |
2099 | /* Initialize before goto out */ |
2100 | if (quiet) { | |
2101 | progress = false; | |
2102 | } | |
2103 | qemu_progress_init(progress, 1.0); | |
6b837bc4 JS |
2104 | qemu_progress_print(0, 100); |
2105 | ||
9fd77f99 PL |
2106 | s.src = g_new0(BlockBackend *, s.src_num); |
2107 | s.src_sectors = g_new(int64_t, s.src_num); | |
926c2d23 | 2108 | |
9fd77f99 PL |
2109 | for (bs_i = 0; bs_i < s.src_num; bs_i++) { |
2110 | s.src[bs_i] = img_open(image_opts, argv[optind + bs_i], | |
2111 | fmt, src_flags, src_writethrough, quiet); | |
2112 | if (!s.src[bs_i]) { | |
c2abccec MK |
2113 | ret = -1; |
2114 | goto out; | |
2115 | } | |
9fd77f99 PL |
2116 | s.src_sectors[bs_i] = blk_nb_sectors(s.src[bs_i]); |
2117 | if (s.src_sectors[bs_i] < 0) { | |
52bf1e72 | 2118 | error_report("Could not get size of %s: %s", |
9fd77f99 | 2119 | argv[optind + bs_i], strerror(-s.src_sectors[bs_i])); |
52bf1e72 MA |
2120 | ret = -1; |
2121 | goto out; | |
2122 | } | |
9fd77f99 | 2123 | s.total_sectors += s.src_sectors[bs_i]; |
926c2d23 | 2124 | } |
ea2384d3 | 2125 | |
ef80654d | 2126 | if (sn_opts) { |
9fd77f99 | 2127 | bdrv_snapshot_load_tmp(blk_bs(s.src[0]), |
10d6eda1 PM |
2128 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), |
2129 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
2130 | &local_err); | |
ef80654d | 2131 | } else if (snapshot_name != NULL) { |
9fd77f99 | 2132 | if (s.src_num > 1) { |
6daf194d | 2133 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 2134 | ret = -1; |
2135 | goto out; | |
2136 | } | |
7b4c4781 | 2137 | |
9fd77f99 PL |
2138 | bdrv_snapshot_load_tmp_by_id_or_name(blk_bs(s.src[0]), snapshot_name, |
2139 | &local_err); | |
ef80654d | 2140 | } |
84d18f06 | 2141 | if (local_err) { |
c29b77f9 | 2142 | error_reportf_err(local_err, "Failed to load snapshot: "); |
ef80654d WX |
2143 | ret = -1; |
2144 | goto out; | |
51ef6727 | 2145 | } |
2146 | ||
efa84d43 | 2147 | /* Find driver and parse its options */ |
ea2384d3 | 2148 | drv = bdrv_find_format(out_fmt); |
c2abccec | 2149 | if (!drv) { |
15654a6d | 2150 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
2151 | ret = -1; |
2152 | goto out; | |
2153 | } | |
efa84d43 | 2154 | |
b65a5e12 | 2155 | proto_drv = bdrv_find_protocol(out_filename, true, &local_err); |
c2abccec | 2156 | if (!proto_drv) { |
2867ce4a | 2157 | error_report_err(local_err); |
c2abccec MK |
2158 | ret = -1; |
2159 | goto out; | |
2160 | } | |
b50cbabc | 2161 | |
2e024cde HR |
2162 | if (!skip_create) { |
2163 | if (!drv->create_opts) { | |
2164 | error_report("Format driver '%s' does not support image creation", | |
2165 | drv->format_name); | |
2166 | ret = -1; | |
2167 | goto out; | |
2168 | } | |
f75613cf | 2169 | |
2e024cde HR |
2170 | if (!proto_drv->create_opts) { |
2171 | error_report("Protocol driver '%s' does not support image creation", | |
2172 | proto_drv->format_name); | |
2173 | ret = -1; | |
2174 | goto out; | |
2175 | } | |
f75613cf | 2176 | |
2e024cde HR |
2177 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
2178 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 2179 | |
2e024cde | 2180 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
2181 | if (options) { |
2182 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
2183 | if (local_err) { | |
97a2ca7a | 2184 | error_report_err(local_err); |
dc523cd3 MA |
2185 | ret = -1; |
2186 | goto out; | |
2187 | } | |
2e024cde | 2188 | } |
efa84d43 | 2189 | |
9fd77f99 | 2190 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, s.total_sectors * 512, |
39101f25 | 2191 | &error_abort); |
2e024cde HR |
2192 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); |
2193 | if (ret < 0) { | |
2194 | goto out; | |
2195 | } | |
c2abccec | 2196 | } |
efa84d43 | 2197 | |
a18953fb | 2198 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 2199 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 2200 | if (out_baseimg_param) { |
83d0521a | 2201 | out_baseimg = out_baseimg_param; |
a18953fb | 2202 | } |
9fd77f99 | 2203 | s.target_has_backing = (bool) out_baseimg; |
a18953fb | 2204 | |
48758a84 HR |
2205 | if (s.src_num > 1 && out_baseimg) { |
2206 | error_report("Having a backing file for the target makes no sense when " | |
2207 | "concatenating multiple input images"); | |
2208 | ret = -1; | |
2209 | goto out; | |
2210 | } | |
2211 | ||
efa84d43 | 2212 | /* Check if compression is supported */ |
9fd77f99 | 2213 | if (s.compressed) { |
83d0521a CL |
2214 | bool encryption = |
2215 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
2216 | const char *preallocation = | |
2217 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 | 2218 | |
35fadca8 | 2219 | if (!drv->bdrv_co_pwritev_compressed) { |
15654a6d | 2220 | error_report("Compression not supported for this file format"); |
c2abccec MK |
2221 | ret = -1; |
2222 | goto out; | |
efa84d43 KW |
2223 | } |
2224 | ||
83d0521a | 2225 | if (encryption) { |
15654a6d JS |
2226 | error_report("Compression and encryption not supported at " |
2227 | "the same time"); | |
c2abccec MK |
2228 | ret = -1; |
2229 | goto out; | |
efa84d43 | 2230 | } |
41521fa4 | 2231 | |
83d0521a CL |
2232 | if (preallocation |
2233 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
2234 | { |
2235 | error_report("Compression and preallocation not supported at " | |
2236 | "the same time"); | |
2237 | ret = -1; | |
2238 | goto out; | |
2239 | } | |
efa84d43 KW |
2240 | } |
2241 | ||
b2e10493 AD |
2242 | if (!skip_create) { |
2243 | /* Create the new image */ | |
c282e1fd | 2244 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 2245 | if (ret < 0) { |
c29b77f9 MA |
2246 | error_reportf_err(local_err, "%s: error while converting %s: ", |
2247 | out_filename, out_fmt); | |
b2e10493 | 2248 | goto out; |
ea2384d3 FB |
2249 | } |
2250 | } | |
3b46e624 | 2251 | |
9fd77f99 | 2252 | flags = s.min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
ce099547 | 2253 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2254 | if (ret < 0) { |
2255 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 2256 | goto out; |
661a0f71 FS |
2257 | } |
2258 | ||
eb769f74 DB |
2259 | /* XXX we should allow --image-opts to trigger use of |
2260 | * img_open() here, but then we have trouble with | |
2261 | * the bdrv_create() call which takes different params. | |
2262 | * Not critical right now, so fix can wait... | |
2263 | */ | |
9fd77f99 PL |
2264 | s.target = img_open_file(out_filename, out_fmt, flags, writethrough, quiet); |
2265 | if (!s.target) { | |
c2abccec MK |
2266 | ret = -1; |
2267 | goto out; | |
2268 | } | |
9fd77f99 | 2269 | out_bs = blk_bs(s.target); |
ea2384d3 | 2270 | |
5def6b80 | 2271 | /* increase bufsectors from the default 4096 (2M) if opt_transfer |
f2521c90 PL |
2272 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) |
2273 | * as maximum. */ | |
9fd77f99 PL |
2274 | s.buf_sectors = MIN(32768, |
2275 | MAX(s.buf_sectors, | |
2276 | MAX(out_bs->bl.opt_transfer >> BDRV_SECTOR_BITS, | |
2277 | out_bs->bl.pdiscard_alignment >> | |
2278 | BDRV_SECTOR_BITS))); | |
f2521c90 | 2279 | |
b2e10493 | 2280 | if (skip_create) { |
9fd77f99 | 2281 | int64_t output_sectors = blk_nb_sectors(s.target); |
43716fa8 | 2282 | if (output_sectors < 0) { |
eec5eb42 | 2283 | error_report("unable to get output image length: %s", |
43716fa8 | 2284 | strerror(-output_sectors)); |
b2e10493 AD |
2285 | ret = -1; |
2286 | goto out; | |
9fd77f99 | 2287 | } else if (output_sectors < s.total_sectors) { |
b2e10493 AD |
2288 | error_report("output file is smaller than input file"); |
2289 | ret = -1; | |
2290 | goto out; | |
2291 | } | |
2292 | } | |
2293 | ||
24f833cd PL |
2294 | ret = bdrv_get_info(out_bs, &bdi); |
2295 | if (ret < 0) { | |
9fd77f99 | 2296 | if (s.compressed) { |
15654a6d | 2297 | error_report("could not get block driver info"); |
c2abccec MK |
2298 | goto out; |
2299 | } | |
24f833cd | 2300 | } else { |
9fd77f99 PL |
2301 | s.compressed = s.compressed || bdi.needs_compressed_writes; |
2302 | s.cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; | |
2303 | } | |
802c3d4c | 2304 | |
9fd77f99 | 2305 | ret = convert_do_copy(&s); |
c2abccec | 2306 | out: |
13c28af8 PL |
2307 | if (!ret) { |
2308 | qemu_progress_print(100, 0); | |
2309 | } | |
6b837bc4 | 2310 | qemu_progress_end(); |
83d0521a CL |
2311 | qemu_opts_del(opts); |
2312 | qemu_opts_free(create_opts); | |
fbf28a43 | 2313 | qemu_opts_del(sn_opts); |
9fd77f99 PL |
2314 | blk_unref(s.target); |
2315 | if (s.src) { | |
2316 | for (bs_i = 0; bs_i < s.src_num; bs_i++) { | |
2317 | blk_unref(s.src[bs_i]); | |
26f54e9a | 2318 | } |
9fd77f99 | 2319 | g_free(s.src); |
26f54e9a | 2320 | } |
9fd77f99 | 2321 | g_free(s.src_sectors); |
64bb01aa KW |
2322 | fail_getopt: |
2323 | g_free(options); | |
2324 | ||
9fd77f99 | 2325 | return !!ret; |
ea2384d3 FB |
2326 | } |
2327 | ||
57d1a2b6 | 2328 | |
faea38e7 FB |
2329 | static void dump_snapshots(BlockDriverState *bs) |
2330 | { | |
2331 | QEMUSnapshotInfo *sn_tab, *sn; | |
2332 | int nb_sns, i; | |
faea38e7 FB |
2333 | |
2334 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
2335 | if (nb_sns <= 0) | |
2336 | return; | |
2337 | printf("Snapshot list:\n"); | |
5b917044 WX |
2338 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
2339 | printf("\n"); | |
faea38e7 FB |
2340 | for(i = 0; i < nb_sns; i++) { |
2341 | sn = &sn_tab[i]; | |
5b917044 WX |
2342 | bdrv_snapshot_dump(fprintf, stdout, sn); |
2343 | printf("\n"); | |
faea38e7 | 2344 | } |
7267c094 | 2345 | g_free(sn_tab); |
faea38e7 FB |
2346 | } |
2347 | ||
9699bf0d SH |
2348 | static void dump_json_image_info_list(ImageInfoList *list) |
2349 | { | |
9699bf0d | 2350 | QString *str; |
9699bf0d | 2351 | QObject *obj; |
7d5e199a | 2352 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
2353 | |
2354 | visit_type_ImageInfoList(v, NULL, &list, &error_abort); | |
2355 | visit_complete(v, &obj); | |
9699bf0d SH |
2356 | str = qobject_to_json_pretty(obj); |
2357 | assert(str != NULL); | |
2358 | printf("%s\n", qstring_get_str(str)); | |
2359 | qobject_decref(obj); | |
3b098d56 | 2360 | visit_free(v); |
9699bf0d SH |
2361 | QDECREF(str); |
2362 | } | |
2363 | ||
c054b3fd BC |
2364 | static void dump_json_image_info(ImageInfo *info) |
2365 | { | |
c054b3fd | 2366 | QString *str; |
c054b3fd | 2367 | QObject *obj; |
7d5e199a | 2368 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
2369 | |
2370 | visit_type_ImageInfo(v, NULL, &info, &error_abort); | |
2371 | visit_complete(v, &obj); | |
c054b3fd BC |
2372 | str = qobject_to_json_pretty(obj); |
2373 | assert(str != NULL); | |
2374 | printf("%s\n", qstring_get_str(str)); | |
2375 | qobject_decref(obj); | |
3b098d56 | 2376 | visit_free(v); |
c054b3fd BC |
2377 | QDECREF(str); |
2378 | } | |
2379 | ||
9699bf0d SH |
2380 | static void dump_human_image_info_list(ImageInfoList *list) |
2381 | { | |
2382 | ImageInfoList *elem; | |
2383 | bool delim = false; | |
2384 | ||
2385 | for (elem = list; elem; elem = elem->next) { | |
2386 | if (delim) { | |
2387 | printf("\n"); | |
2388 | } | |
2389 | delim = true; | |
2390 | ||
5b917044 | 2391 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
2392 | } |
2393 | } | |
2394 | ||
2395 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
2396 | { | |
2397 | return strcmp(a, b) == 0; | |
2398 | } | |
2399 | ||
2400 | /** | |
2401 | * Open an image file chain and return an ImageInfoList | |
2402 | * | |
2403 | * @filename: topmost image filename | |
2404 | * @fmt: topmost image format (may be NULL to autodetect) | |
2405 | * @chain: true - enumerate entire backing file chain | |
2406 | * false - only topmost image file | |
2407 | * | |
2408 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
2409 | * image file. If there was an error a message will have been printed to | |
2410 | * stderr. | |
2411 | */ | |
eb769f74 DB |
2412 | static ImageInfoList *collect_image_info_list(bool image_opts, |
2413 | const char *filename, | |
9699bf0d SH |
2414 | const char *fmt, |
2415 | bool chain) | |
2416 | { | |
2417 | ImageInfoList *head = NULL; | |
2418 | ImageInfoList **last = &head; | |
2419 | GHashTable *filenames; | |
43526ec8 | 2420 | Error *err = NULL; |
9699bf0d SH |
2421 | |
2422 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
2423 | ||
2424 | while (filename) { | |
26f54e9a | 2425 | BlockBackend *blk; |
9699bf0d SH |
2426 | BlockDriverState *bs; |
2427 | ImageInfo *info; | |
2428 | ImageInfoList *elem; | |
2429 | ||
2430 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
2431 | error_report("Backing file '%s' creates an infinite loop.", | |
2432 | filename); | |
2433 | goto err; | |
2434 | } | |
2435 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
2436 | ||
efaa7c4e | 2437 | blk = img_open(image_opts, filename, fmt, |
ce099547 | 2438 | BDRV_O_NO_BACKING | BDRV_O_NO_IO, false, false); |
7e7d56d9 | 2439 | if (!blk) { |
9699bf0d SH |
2440 | goto err; |
2441 | } | |
7e7d56d9 | 2442 | bs = blk_bs(blk); |
9699bf0d | 2443 | |
43526ec8 | 2444 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 2445 | if (err) { |
565f65d2 | 2446 | error_report_err(err); |
26f54e9a | 2447 | blk_unref(blk); |
43526ec8 | 2448 | goto err; |
fb0ed453 | 2449 | } |
9699bf0d SH |
2450 | |
2451 | elem = g_new0(ImageInfoList, 1); | |
2452 | elem->value = info; | |
2453 | *last = elem; | |
2454 | last = &elem->next; | |
2455 | ||
26f54e9a | 2456 | blk_unref(blk); |
9699bf0d SH |
2457 | |
2458 | filename = fmt = NULL; | |
2459 | if (chain) { | |
2460 | if (info->has_full_backing_filename) { | |
2461 | filename = info->full_backing_filename; | |
2462 | } else if (info->has_backing_filename) { | |
92d617ab JS |
2463 | error_report("Could not determine absolute backing filename," |
2464 | " but backing filename '%s' present", | |
2465 | info->backing_filename); | |
2466 | goto err; | |
9699bf0d SH |
2467 | } |
2468 | if (info->has_backing_filename_format) { | |
2469 | fmt = info->backing_filename_format; | |
2470 | } | |
2471 | } | |
2472 | } | |
2473 | g_hash_table_destroy(filenames); | |
2474 | return head; | |
2475 | ||
2476 | err: | |
2477 | qapi_free_ImageInfoList(head); | |
2478 | g_hash_table_destroy(filenames); | |
2479 | return NULL; | |
2480 | } | |
2481 | ||
c054b3fd BC |
2482 | static int img_info(int argc, char **argv) |
2483 | { | |
2484 | int c; | |
2485 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 2486 | bool chain = false; |
c054b3fd | 2487 | const char *filename, *fmt, *output; |
9699bf0d | 2488 | ImageInfoList *list; |
eb769f74 | 2489 | bool image_opts = false; |
c054b3fd | 2490 | |
ea2384d3 | 2491 | fmt = NULL; |
c054b3fd | 2492 | output = NULL; |
ea2384d3 | 2493 | for(;;) { |
c054b3fd BC |
2494 | int option_index = 0; |
2495 | static const struct option long_options[] = { | |
2496 | {"help", no_argument, 0, 'h'}, | |
2497 | {"format", required_argument, 0, 'f'}, | |
2498 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 2499 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
3babeb15 | 2500 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2501 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
c054b3fd BC |
2502 | {0, 0, 0, 0} |
2503 | }; | |
c9192973 | 2504 | c = getopt_long(argc, argv, ":f:h", |
c054b3fd | 2505 | long_options, &option_index); |
b8fb60da | 2506 | if (c == -1) { |
ea2384d3 | 2507 | break; |
b8fb60da | 2508 | } |
ea2384d3 | 2509 | switch(c) { |
c9192973 SH |
2510 | case ':': |
2511 | missing_argument(argv[optind - 1]); | |
2512 | break; | |
ef87394c | 2513 | case '?': |
c9192973 SH |
2514 | unrecognized_option(argv[optind - 1]); |
2515 | break; | |
ea2384d3 FB |
2516 | case 'h': |
2517 | help(); | |
2518 | break; | |
2519 | case 'f': | |
2520 | fmt = optarg; | |
2521 | break; | |
c054b3fd BC |
2522 | case OPTION_OUTPUT: |
2523 | output = optarg; | |
2524 | break; | |
9699bf0d SH |
2525 | case OPTION_BACKING_CHAIN: |
2526 | chain = true; | |
2527 | break; | |
3babeb15 DB |
2528 | case OPTION_OBJECT: { |
2529 | QemuOpts *opts; | |
2530 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2531 | optarg, true); | |
2532 | if (!opts) { | |
2533 | return 1; | |
2534 | } | |
2535 | } break; | |
eb769f74 DB |
2536 | case OPTION_IMAGE_OPTS: |
2537 | image_opts = true; | |
2538 | break; | |
ea2384d3 FB |
2539 | } |
2540 | } | |
fc11eb26 | 2541 | if (optind != argc - 1) { |
ac1307ab | 2542 | error_exit("Expecting one image file name"); |
b8fb60da | 2543 | } |
ea2384d3 FB |
2544 | filename = argv[optind++]; |
2545 | ||
c054b3fd BC |
2546 | if (output && !strcmp(output, "json")) { |
2547 | output_format = OFORMAT_JSON; | |
2548 | } else if (output && !strcmp(output, "human")) { | |
2549 | output_format = OFORMAT_HUMAN; | |
2550 | } else if (output) { | |
2551 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
2552 | return 1; |
2553 | } | |
c054b3fd | 2554 | |
3babeb15 DB |
2555 | if (qemu_opts_foreach(&qemu_object_opts, |
2556 | user_creatable_add_opts_foreach, | |
51b9b478 | 2557 | NULL, NULL)) { |
3babeb15 DB |
2558 | return 1; |
2559 | } | |
2560 | ||
eb769f74 | 2561 | list = collect_image_info_list(image_opts, filename, fmt, chain); |
9699bf0d | 2562 | if (!list) { |
c2abccec | 2563 | return 1; |
faea38e7 | 2564 | } |
c054b3fd | 2565 | |
c054b3fd BC |
2566 | switch (output_format) { |
2567 | case OFORMAT_HUMAN: | |
9699bf0d | 2568 | dump_human_image_info_list(list); |
c054b3fd BC |
2569 | break; |
2570 | case OFORMAT_JSON: | |
9699bf0d SH |
2571 | if (chain) { |
2572 | dump_json_image_info_list(list); | |
2573 | } else { | |
2574 | dump_json_image_info(list->value); | |
2575 | } | |
c054b3fd | 2576 | break; |
faea38e7 | 2577 | } |
c054b3fd | 2578 | |
9699bf0d | 2579 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2580 | return 0; |
2581 | } | |
2582 | ||
4c93a13b PB |
2583 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, |
2584 | MapEntry *next) | |
2585 | { | |
2586 | switch (output_format) { | |
2587 | case OFORMAT_HUMAN: | |
16b0d555 | 2588 | if (e->data && !e->has_offset) { |
4c93a13b PB |
2589 | error_report("File contains external, encrypted or compressed clusters."); |
2590 | exit(1); | |
2591 | } | |
16b0d555 | 2592 | if (e->data && !e->zero) { |
4c93a13b | 2593 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", |
16b0d555 FZ |
2594 | e->start, e->length, |
2595 | e->has_offset ? e->offset : 0, | |
2596 | e->has_filename ? e->filename : ""); | |
4c93a13b PB |
2597 | } |
2598 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2599 | * Modify the flags here to allow more coalescing. | |
2600 | */ | |
16b0d555 FZ |
2601 | if (next && (!next->data || next->zero)) { |
2602 | next->data = false; | |
2603 | next->zero = true; | |
4c93a13b PB |
2604 | } |
2605 | break; | |
2606 | case OFORMAT_JSON: | |
16b0d555 FZ |
2607 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64"," |
2608 | " \"depth\": %"PRId64", \"zero\": %s, \"data\": %s", | |
4c93a13b PB |
2609 | (e->start == 0 ? "[" : ",\n"), |
2610 | e->start, e->length, e->depth, | |
16b0d555 FZ |
2611 | e->zero ? "true" : "false", |
2612 | e->data ? "true" : "false"); | |
2613 | if (e->has_offset) { | |
c745bfb4 | 2614 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
2615 | } |
2616 | putchar('}'); | |
2617 | ||
2618 | if (!next) { | |
2619 | printf("]\n"); | |
2620 | } | |
2621 | break; | |
2622 | } | |
2623 | } | |
2624 | ||
2625 | static int get_block_status(BlockDriverState *bs, int64_t sector_num, | |
2626 | int nb_sectors, MapEntry *e) | |
2627 | { | |
2628 | int64_t ret; | |
2629 | int depth; | |
67a0fd2a | 2630 | BlockDriverState *file; |
2875645b | 2631 | bool has_offset; |
4c93a13b PB |
2632 | |
2633 | /* As an optimization, we could cache the current range of unallocated | |
2634 | * clusters in each file of the chain, and avoid querying the same | |
2635 | * range repeatedly. | |
2636 | */ | |
2637 | ||
2638 | depth = 0; | |
2639 | for (;;) { | |
67a0fd2a FZ |
2640 | ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors, |
2641 | &file); | |
4c93a13b PB |
2642 | if (ret < 0) { |
2643 | return ret; | |
2644 | } | |
2645 | assert(nb_sectors); | |
2646 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { | |
2647 | break; | |
2648 | } | |
760e0063 | 2649 | bs = backing_bs(bs); |
4c93a13b PB |
2650 | if (bs == NULL) { |
2651 | ret = 0; | |
2652 | break; | |
2653 | } | |
2654 | ||
2655 | depth++; | |
2656 | } | |
2657 | ||
2875645b JS |
2658 | has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID); |
2659 | ||
2660 | *e = (MapEntry) { | |
2661 | .start = sector_num * BDRV_SECTOR_SIZE, | |
2662 | .length = nb_sectors * BDRV_SECTOR_SIZE, | |
2663 | .data = !!(ret & BDRV_BLOCK_DATA), | |
2664 | .zero = !!(ret & BDRV_BLOCK_ZERO), | |
2665 | .offset = ret & BDRV_BLOCK_OFFSET_MASK, | |
2666 | .has_offset = has_offset, | |
2667 | .depth = depth, | |
2668 | .has_filename = file && has_offset, | |
2669 | .filename = file && has_offset ? file->filename : NULL, | |
2670 | }; | |
2671 | ||
4c93a13b PB |
2672 | return 0; |
2673 | } | |
2674 | ||
16b0d555 FZ |
2675 | static inline bool entry_mergeable(const MapEntry *curr, const MapEntry *next) |
2676 | { | |
2677 | if (curr->length == 0) { | |
2678 | return false; | |
2679 | } | |
2680 | if (curr->zero != next->zero || | |
2681 | curr->data != next->data || | |
2682 | curr->depth != next->depth || | |
2683 | curr->has_filename != next->has_filename || | |
2684 | curr->has_offset != next->has_offset) { | |
2685 | return false; | |
2686 | } | |
2687 | if (curr->has_filename && strcmp(curr->filename, next->filename)) { | |
2688 | return false; | |
2689 | } | |
2690 | if (curr->has_offset && curr->offset + curr->length != next->offset) { | |
2691 | return false; | |
2692 | } | |
2693 | return true; | |
2694 | } | |
2695 | ||
4c93a13b PB |
2696 | static int img_map(int argc, char **argv) |
2697 | { | |
2698 | int c; | |
2699 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 2700 | BlockBackend *blk; |
4c93a13b PB |
2701 | BlockDriverState *bs; |
2702 | const char *filename, *fmt, *output; | |
2703 | int64_t length; | |
2704 | MapEntry curr = { .length = 0 }, next; | |
2705 | int ret = 0; | |
eb769f74 | 2706 | bool image_opts = false; |
4c93a13b PB |
2707 | |
2708 | fmt = NULL; | |
2709 | output = NULL; | |
2710 | for (;;) { | |
2711 | int option_index = 0; | |
2712 | static const struct option long_options[] = { | |
2713 | {"help", no_argument, 0, 'h'}, | |
2714 | {"format", required_argument, 0, 'f'}, | |
2715 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
3babeb15 | 2716 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2717 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
4c93a13b PB |
2718 | {0, 0, 0, 0} |
2719 | }; | |
c9192973 | 2720 | c = getopt_long(argc, argv, ":f:h", |
4c93a13b PB |
2721 | long_options, &option_index); |
2722 | if (c == -1) { | |
2723 | break; | |
2724 | } | |
2725 | switch (c) { | |
c9192973 SH |
2726 | case ':': |
2727 | missing_argument(argv[optind - 1]); | |
2728 | break; | |
4c93a13b | 2729 | case '?': |
c9192973 SH |
2730 | unrecognized_option(argv[optind - 1]); |
2731 | break; | |
4c93a13b PB |
2732 | case 'h': |
2733 | help(); | |
2734 | break; | |
2735 | case 'f': | |
2736 | fmt = optarg; | |
2737 | break; | |
2738 | case OPTION_OUTPUT: | |
2739 | output = optarg; | |
2740 | break; | |
3babeb15 DB |
2741 | case OPTION_OBJECT: { |
2742 | QemuOpts *opts; | |
2743 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2744 | optarg, true); | |
2745 | if (!opts) { | |
2746 | return 1; | |
2747 | } | |
2748 | } break; | |
eb769f74 DB |
2749 | case OPTION_IMAGE_OPTS: |
2750 | image_opts = true; | |
2751 | break; | |
4c93a13b PB |
2752 | } |
2753 | } | |
ac1307ab FZ |
2754 | if (optind != argc - 1) { |
2755 | error_exit("Expecting one image file name"); | |
4c93a13b | 2756 | } |
ac1307ab | 2757 | filename = argv[optind]; |
4c93a13b PB |
2758 | |
2759 | if (output && !strcmp(output, "json")) { | |
2760 | output_format = OFORMAT_JSON; | |
2761 | } else if (output && !strcmp(output, "human")) { | |
2762 | output_format = OFORMAT_HUMAN; | |
2763 | } else if (output) { | |
2764 | error_report("--output must be used with human or json as argument."); | |
2765 | return 1; | |
2766 | } | |
2767 | ||
3babeb15 DB |
2768 | if (qemu_opts_foreach(&qemu_object_opts, |
2769 | user_creatable_add_opts_foreach, | |
51b9b478 | 2770 | NULL, NULL)) { |
3babeb15 DB |
2771 | return 1; |
2772 | } | |
2773 | ||
ce099547 | 2774 | blk = img_open(image_opts, filename, fmt, 0, false, false); |
7e7d56d9 MA |
2775 | if (!blk) { |
2776 | return 1; | |
4c93a13b | 2777 | } |
7e7d56d9 | 2778 | bs = blk_bs(blk); |
4c93a13b PB |
2779 | |
2780 | if (output_format == OFORMAT_HUMAN) { | |
2781 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2782 | } | |
2783 | ||
f1d3cd79 | 2784 | length = blk_getlength(blk); |
4c93a13b PB |
2785 | while (curr.start + curr.length < length) { |
2786 | int64_t nsectors_left; | |
2787 | int64_t sector_num; | |
2788 | int n; | |
2789 | ||
2790 | sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; | |
2791 | ||
2792 | /* Probe up to 1 GiB at a time. */ | |
2793 | nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; | |
2794 | n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); | |
2795 | ret = get_block_status(bs, sector_num, n, &next); | |
2796 | ||
2797 | if (ret < 0) { | |
2798 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2799 | goto out; | |
2800 | } | |
2801 | ||
16b0d555 | 2802 | if (entry_mergeable(&curr, &next)) { |
4c93a13b PB |
2803 | curr.length += next.length; |
2804 | continue; | |
2805 | } | |
2806 | ||
2807 | if (curr.length > 0) { | |
2808 | dump_map_entry(output_format, &curr, &next); | |
2809 | } | |
2810 | curr = next; | |
2811 | } | |
2812 | ||
2813 | dump_map_entry(output_format, &curr, NULL); | |
2814 | ||
2815 | out: | |
26f54e9a | 2816 | blk_unref(blk); |
4c93a13b PB |
2817 | return ret < 0; |
2818 | } | |
2819 | ||
f7b4a940 AL |
2820 | #define SNAPSHOT_LIST 1 |
2821 | #define SNAPSHOT_CREATE 2 | |
2822 | #define SNAPSHOT_APPLY 3 | |
2823 | #define SNAPSHOT_DELETE 4 | |
2824 | ||
153859be | 2825 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 2826 | { |
26f54e9a | 2827 | BlockBackend *blk; |
f7b4a940 AL |
2828 | BlockDriverState *bs; |
2829 | QEMUSnapshotInfo sn; | |
2830 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2831 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2832 | int action = 0; |
2833 | qemu_timeval tv; | |
f382d43a | 2834 | bool quiet = false; |
a89d89d3 | 2835 | Error *err = NULL; |
eb769f74 | 2836 | bool image_opts = false; |
f7b4a940 | 2837 | |
ce099547 | 2838 | bdrv_oflags = BDRV_O_RDWR; |
f7b4a940 AL |
2839 | /* Parse commandline parameters */ |
2840 | for(;;) { | |
3babeb15 DB |
2841 | static const struct option long_options[] = { |
2842 | {"help", no_argument, 0, 'h'}, | |
2843 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2844 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
2845 | {0, 0, 0, 0} |
2846 | }; | |
c9192973 | 2847 | c = getopt_long(argc, argv, ":la:c:d:hq", |
3babeb15 | 2848 | long_options, NULL); |
b8fb60da | 2849 | if (c == -1) { |
f7b4a940 | 2850 | break; |
b8fb60da | 2851 | } |
f7b4a940 | 2852 | switch(c) { |
c9192973 SH |
2853 | case ':': |
2854 | missing_argument(argv[optind - 1]); | |
2855 | break; | |
ef87394c | 2856 | case '?': |
c9192973 SH |
2857 | unrecognized_option(argv[optind - 1]); |
2858 | break; | |
f7b4a940 AL |
2859 | case 'h': |
2860 | help(); | |
153859be | 2861 | return 0; |
f7b4a940 AL |
2862 | case 'l': |
2863 | if (action) { | |
ac1307ab | 2864 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2865 | return 0; |
f7b4a940 AL |
2866 | } |
2867 | action = SNAPSHOT_LIST; | |
f5edb014 | 2868 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2869 | break; |
2870 | case 'a': | |
2871 | if (action) { | |
ac1307ab | 2872 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2873 | return 0; |
f7b4a940 AL |
2874 | } |
2875 | action = SNAPSHOT_APPLY; | |
2876 | snapshot_name = optarg; | |
2877 | break; | |
2878 | case 'c': | |
2879 | if (action) { | |
ac1307ab | 2880 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2881 | return 0; |
f7b4a940 AL |
2882 | } |
2883 | action = SNAPSHOT_CREATE; | |
2884 | snapshot_name = optarg; | |
2885 | break; | |
2886 | case 'd': | |
2887 | if (action) { | |
ac1307ab | 2888 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2889 | return 0; |
f7b4a940 AL |
2890 | } |
2891 | action = SNAPSHOT_DELETE; | |
2892 | snapshot_name = optarg; | |
2893 | break; | |
f382d43a MR |
2894 | case 'q': |
2895 | quiet = true; | |
2896 | break; | |
3babeb15 DB |
2897 | case OPTION_OBJECT: { |
2898 | QemuOpts *opts; | |
2899 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2900 | optarg, true); | |
2901 | if (!opts) { | |
2902 | return 1; | |
2903 | } | |
2904 | } break; | |
eb769f74 DB |
2905 | case OPTION_IMAGE_OPTS: |
2906 | image_opts = true; | |
2907 | break; | |
f7b4a940 AL |
2908 | } |
2909 | } | |
2910 | ||
fc11eb26 | 2911 | if (optind != argc - 1) { |
ac1307ab | 2912 | error_exit("Expecting one image file name"); |
b8fb60da | 2913 | } |
f7b4a940 AL |
2914 | filename = argv[optind++]; |
2915 | ||
3babeb15 DB |
2916 | if (qemu_opts_foreach(&qemu_object_opts, |
2917 | user_creatable_add_opts_foreach, | |
51b9b478 | 2918 | NULL, NULL)) { |
3babeb15 DB |
2919 | return 1; |
2920 | } | |
2921 | ||
f7b4a940 | 2922 | /* Open the image */ |
ce099547 | 2923 | blk = img_open(image_opts, filename, NULL, bdrv_oflags, false, quiet); |
7e7d56d9 MA |
2924 | if (!blk) { |
2925 | return 1; | |
c2abccec | 2926 | } |
7e7d56d9 | 2927 | bs = blk_bs(blk); |
f7b4a940 AL |
2928 | |
2929 | /* Perform the requested action */ | |
2930 | switch(action) { | |
2931 | case SNAPSHOT_LIST: | |
2932 | dump_snapshots(bs); | |
2933 | break; | |
2934 | ||
2935 | case SNAPSHOT_CREATE: | |
2936 | memset(&sn, 0, sizeof(sn)); | |
2937 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2938 | ||
2939 | qemu_gettimeofday(&tv); | |
2940 | sn.date_sec = tv.tv_sec; | |
2941 | sn.date_nsec = tv.tv_usec * 1000; | |
2942 | ||
2943 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2944 | if (ret) { |
15654a6d | 2945 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2946 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2947 | } |
f7b4a940 AL |
2948 | break; |
2949 | ||
2950 | case SNAPSHOT_APPLY: | |
2951 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 2952 | if (ret) { |
15654a6d | 2953 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 2954 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2955 | } |
f7b4a940 AL |
2956 | break; |
2957 | ||
2958 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2959 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 2960 | if (err) { |
c29b77f9 MA |
2961 | error_reportf_err(err, "Could not delete snapshot '%s': ", |
2962 | snapshot_name); | |
a89d89d3 | 2963 | ret = 1; |
b8fb60da | 2964 | } |
f7b4a940 AL |
2965 | break; |
2966 | } | |
2967 | ||
2968 | /* Cleanup */ | |
26f54e9a | 2969 | blk_unref(blk); |
c2abccec MK |
2970 | if (ret) { |
2971 | return 1; | |
2972 | } | |
153859be | 2973 | return 0; |
f7b4a940 AL |
2974 | } |
2975 | ||
3e85c6fd KW |
2976 | static int img_rebase(int argc, char **argv) |
2977 | { | |
26f54e9a | 2978 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
396374ca PB |
2979 | uint8_t *buf_old = NULL; |
2980 | uint8_t *buf_new = NULL; | |
f1d3cd79 | 2981 | BlockDriverState *bs = NULL; |
3e85c6fd | 2982 | char *filename; |
40055951 HR |
2983 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
2984 | int c, flags, src_flags, ret; | |
ce099547 | 2985 | bool writethrough, src_writethrough; |
3e85c6fd | 2986 | int unsafe = 0; |
6b837bc4 | 2987 | int progress = 0; |
f382d43a | 2988 | bool quiet = false; |
34b5d2c6 | 2989 | Error *local_err = NULL; |
eb769f74 | 2990 | bool image_opts = false; |
3e85c6fd KW |
2991 | |
2992 | /* Parse commandline parameters */ | |
e53dbee0 | 2993 | fmt = NULL; |
661a0f71 | 2994 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 2995 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
2996 | out_baseimg = NULL; |
2997 | out_basefmt = NULL; | |
3e85c6fd | 2998 | for(;;) { |
3babeb15 DB |
2999 | static const struct option long_options[] = { |
3000 | {"help", no_argument, 0, 'h'}, | |
3001 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3002 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3003 | {0, 0, 0, 0} |
3004 | }; | |
c9192973 | 3005 | c = getopt_long(argc, argv, ":hf:F:b:upt:T:q", |
3babeb15 | 3006 | long_options, NULL); |
b8fb60da | 3007 | if (c == -1) { |
3e85c6fd | 3008 | break; |
b8fb60da | 3009 | } |
3e85c6fd | 3010 | switch(c) { |
c9192973 SH |
3011 | case ':': |
3012 | missing_argument(argv[optind - 1]); | |
3013 | break; | |
ef87394c | 3014 | case '?': |
c9192973 SH |
3015 | unrecognized_option(argv[optind - 1]); |
3016 | break; | |
3e85c6fd KW |
3017 | case 'h': |
3018 | help(); | |
3019 | return 0; | |
e53dbee0 KW |
3020 | case 'f': |
3021 | fmt = optarg; | |
3022 | break; | |
3e85c6fd KW |
3023 | case 'F': |
3024 | out_basefmt = optarg; | |
3025 | break; | |
3026 | case 'b': | |
3027 | out_baseimg = optarg; | |
3028 | break; | |
3029 | case 'u': | |
3030 | unsafe = 1; | |
3031 | break; | |
6b837bc4 JS |
3032 | case 'p': |
3033 | progress = 1; | |
3034 | break; | |
661a0f71 FS |
3035 | case 't': |
3036 | cache = optarg; | |
3037 | break; | |
40055951 HR |
3038 | case 'T': |
3039 | src_cache = optarg; | |
3040 | break; | |
f382d43a MR |
3041 | case 'q': |
3042 | quiet = true; | |
3043 | break; | |
3babeb15 DB |
3044 | case OPTION_OBJECT: { |
3045 | QemuOpts *opts; | |
3046 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3047 | optarg, true); | |
3048 | if (!opts) { | |
3049 | return 1; | |
3050 | } | |
3051 | } break; | |
eb769f74 DB |
3052 | case OPTION_IMAGE_OPTS: |
3053 | image_opts = true; | |
3054 | break; | |
3e85c6fd KW |
3055 | } |
3056 | } | |
3057 | ||
f382d43a MR |
3058 | if (quiet) { |
3059 | progress = 0; | |
3060 | } | |
3061 | ||
ac1307ab FZ |
3062 | if (optind != argc - 1) { |
3063 | error_exit("Expecting one image file name"); | |
3064 | } | |
3065 | if (!unsafe && !out_baseimg) { | |
3066 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 3067 | } |
3e85c6fd KW |
3068 | filename = argv[optind++]; |
3069 | ||
3babeb15 DB |
3070 | if (qemu_opts_foreach(&qemu_object_opts, |
3071 | user_creatable_add_opts_foreach, | |
51b9b478 | 3072 | NULL, NULL)) { |
3babeb15 DB |
3073 | return 1; |
3074 | } | |
3075 | ||
6b837bc4 JS |
3076 | qemu_progress_init(progress, 2.0); |
3077 | qemu_progress_print(0, 100); | |
3078 | ||
661a0f71 | 3079 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
ce099547 | 3080 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
3081 | if (ret < 0) { |
3082 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 3083 | goto out; |
661a0f71 FS |
3084 | } |
3085 | ||
ce099547 KW |
3086 | src_flags = 0; |
3087 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
3088 | if (ret < 0) { |
3089 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 3090 | goto out; |
40055951 HR |
3091 | } |
3092 | ||
ce099547 KW |
3093 | /* The source files are opened read-only, don't care about WCE */ |
3094 | assert((src_flags & BDRV_O_RDWR) == 0); | |
3095 | (void) src_writethrough; | |
3096 | ||
3e85c6fd KW |
3097 | /* |
3098 | * Open the images. | |
3099 | * | |
3100 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
3101 | * the reference to a renamed or moved backing file. | |
3102 | */ | |
ce099547 | 3103 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 | 3104 | if (!blk) { |
40ed35a3 SH |
3105 | ret = -1; |
3106 | goto out; | |
c2abccec | 3107 | } |
7e7d56d9 | 3108 | bs = blk_bs(blk); |
3e85c6fd | 3109 | |
3e85c6fd | 3110 | if (out_basefmt != NULL) { |
644483d9 | 3111 | if (bdrv_find_format(out_basefmt) == NULL) { |
15654a6d | 3112 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
3113 | ret = -1; |
3114 | goto out; | |
3e85c6fd KW |
3115 | } |
3116 | } | |
3117 | ||
3118 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 3119 | if (!unsafe) { |
9a29e18f | 3120 | char backing_name[PATH_MAX]; |
644483d9 HR |
3121 | QDict *options = NULL; |
3122 | ||
3123 | if (bs->backing_format[0] != '\0') { | |
3124 | options = qdict_new(); | |
3125 | qdict_put(options, "driver", qstring_from_str(bs->backing_format)); | |
3126 | } | |
3e85c6fd | 3127 | |
3e85c6fd | 3128 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
efaa7c4e | 3129 | blk_old_backing = blk_new_open(backing_name, NULL, |
644483d9 HR |
3130 | options, src_flags, &local_err); |
3131 | if (!blk_old_backing) { | |
c29b77f9 MA |
3132 | error_reportf_err(local_err, |
3133 | "Could not open old backing file '%s': ", | |
3134 | backing_name); | |
e84a0dd5 | 3135 | ret = -1; |
c2abccec | 3136 | goto out; |
3e85c6fd | 3137 | } |
644483d9 | 3138 | |
a616673d | 3139 | if (out_baseimg[0]) { |
644483d9 HR |
3140 | if (out_basefmt) { |
3141 | options = qdict_new(); | |
3142 | qdict_put(options, "driver", qstring_from_str(out_basefmt)); | |
3143 | } else { | |
3144 | options = NULL; | |
3145 | } | |
3146 | ||
efaa7c4e | 3147 | blk_new_backing = blk_new_open(out_baseimg, NULL, |
644483d9 HR |
3148 | options, src_flags, &local_err); |
3149 | if (!blk_new_backing) { | |
c29b77f9 MA |
3150 | error_reportf_err(local_err, |
3151 | "Could not open new backing file '%s': ", | |
3152 | out_baseimg); | |
e84a0dd5 | 3153 | ret = -1; |
a616673d AB |
3154 | goto out; |
3155 | } | |
3e85c6fd KW |
3156 | } |
3157 | } | |
3158 | ||
3159 | /* | |
3160 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
3161 | * accesses go to the backing file. We must therefore compare this cluster | |
3162 | * in the old and new backing file, and if they differ we need to copy it | |
3163 | * from the old backing file into the COW file. | |
3164 | * | |
3165 | * If qemu-img crashes during this step, no harm is done. The content of | |
3166 | * the image is the same as the original one at any time. | |
3167 | */ | |
3168 | if (!unsafe) { | |
52bf1e72 MA |
3169 | int64_t num_sectors; |
3170 | int64_t old_backing_num_sectors; | |
3171 | int64_t new_backing_num_sectors = 0; | |
3e85c6fd | 3172 | uint64_t sector; |
cc60e327 | 3173 | int n; |
1f710495 | 3174 | float local_progress = 0; |
d6771bfa | 3175 | |
f1d3cd79 HR |
3176 | buf_old = blk_blockalign(blk, IO_BUF_SIZE); |
3177 | buf_new = blk_blockalign(blk, IO_BUF_SIZE); | |
3e85c6fd | 3178 | |
f1d3cd79 | 3179 | num_sectors = blk_nb_sectors(blk); |
52bf1e72 MA |
3180 | if (num_sectors < 0) { |
3181 | error_report("Could not get size of '%s': %s", | |
3182 | filename, strerror(-num_sectors)); | |
3183 | ret = -1; | |
3184 | goto out; | |
3185 | } | |
f1d3cd79 | 3186 | old_backing_num_sectors = blk_nb_sectors(blk_old_backing); |
52bf1e72 | 3187 | if (old_backing_num_sectors < 0) { |
9a29e18f | 3188 | char backing_name[PATH_MAX]; |
52bf1e72 MA |
3189 | |
3190 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
3191 | error_report("Could not get size of '%s': %s", | |
3192 | backing_name, strerror(-old_backing_num_sectors)); | |
3193 | ret = -1; | |
3194 | goto out; | |
3195 | } | |
f1d3cd79 HR |
3196 | if (blk_new_backing) { |
3197 | new_backing_num_sectors = blk_nb_sectors(blk_new_backing); | |
52bf1e72 MA |
3198 | if (new_backing_num_sectors < 0) { |
3199 | error_report("Could not get size of '%s': %s", | |
3200 | out_baseimg, strerror(-new_backing_num_sectors)); | |
3201 | ret = -1; | |
3202 | goto out; | |
3203 | } | |
a616673d | 3204 | } |
3e85c6fd | 3205 | |
1f710495 KW |
3206 | if (num_sectors != 0) { |
3207 | local_progress = (float)100 / | |
3208 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
3209 | } | |
3210 | ||
3e85c6fd KW |
3211 | for (sector = 0; sector < num_sectors; sector += n) { |
3212 | ||
3213 | /* How many sectors can we handle with the next read? */ | |
3214 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
3215 | n = (IO_BUF_SIZE / 512); | |
3216 | } else { | |
3217 | n = num_sectors - sector; | |
3218 | } | |
3219 | ||
3220 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 | 3221 | ret = bdrv_is_allocated(bs, sector, n, &n); |
d663640c PB |
3222 | if (ret < 0) { |
3223 | error_report("error while reading image metadata: %s", | |
3224 | strerror(-ret)); | |
3225 | goto out; | |
3226 | } | |
cc60e327 | 3227 | if (ret) { |
3e85c6fd KW |
3228 | continue; |
3229 | } | |
3230 | ||
87a1b3e3 KW |
3231 | /* |
3232 | * Read old and new backing file and take into consideration that | |
3233 | * backing files may be smaller than the COW image. | |
3234 | */ | |
3235 | if (sector >= old_backing_num_sectors) { | |
3236 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
3237 | } else { | |
3238 | if (sector + n > old_backing_num_sectors) { | |
3239 | n = old_backing_num_sectors - sector; | |
3240 | } | |
3241 | ||
9166920a EB |
3242 | ret = blk_pread(blk_old_backing, sector << BDRV_SECTOR_BITS, |
3243 | buf_old, n << BDRV_SECTOR_BITS); | |
87a1b3e3 KW |
3244 | if (ret < 0) { |
3245 | error_report("error while reading from old backing file"); | |
3246 | goto out; | |
3247 | } | |
3e85c6fd | 3248 | } |
87a1b3e3 | 3249 | |
f1d3cd79 | 3250 | if (sector >= new_backing_num_sectors || !blk_new_backing) { |
87a1b3e3 KW |
3251 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
3252 | } else { | |
3253 | if (sector + n > new_backing_num_sectors) { | |
3254 | n = new_backing_num_sectors - sector; | |
3255 | } | |
3256 | ||
9166920a EB |
3257 | ret = blk_pread(blk_new_backing, sector << BDRV_SECTOR_BITS, |
3258 | buf_new, n << BDRV_SECTOR_BITS); | |
87a1b3e3 KW |
3259 | if (ret < 0) { |
3260 | error_report("error while reading from new backing file"); | |
3261 | goto out; | |
3262 | } | |
3e85c6fd KW |
3263 | } |
3264 | ||
3265 | /* If they differ, we need to write to the COW file */ | |
3266 | uint64_t written = 0; | |
3267 | ||
3268 | while (written < n) { | |
3269 | int pnum; | |
3270 | ||
3271 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 3272 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd | 3273 | { |
9166920a EB |
3274 | ret = blk_pwrite(blk, |
3275 | (sector + written) << BDRV_SECTOR_BITS, | |
3276 | buf_old + written * 512, | |
3277 | pnum << BDRV_SECTOR_BITS, 0); | |
3e85c6fd | 3278 | if (ret < 0) { |
15654a6d | 3279 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 3280 | strerror(-ret)); |
c2abccec | 3281 | goto out; |
3e85c6fd KW |
3282 | } |
3283 | } | |
3284 | ||
3285 | written += pnum; | |
3286 | } | |
6b837bc4 | 3287 | qemu_progress_print(local_progress, 100); |
3e85c6fd KW |
3288 | } |
3289 | } | |
3290 | ||
3291 | /* | |
3292 | * Change the backing file. All clusters that are different from the old | |
3293 | * backing file are overwritten in the COW file now, so the visible content | |
3294 | * doesn't change when we switch the backing file. | |
3295 | */ | |
a616673d AB |
3296 | if (out_baseimg && *out_baseimg) { |
3297 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
3298 | } else { | |
3299 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
3300 | } | |
3301 | ||
3e85c6fd | 3302 | if (ret == -ENOSPC) { |
15654a6d JS |
3303 | error_report("Could not change the backing file to '%s': No " |
3304 | "space left in the file header", out_baseimg); | |
3e85c6fd | 3305 | } else if (ret < 0) { |
15654a6d | 3306 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
3307 | out_baseimg, strerror(-ret)); |
3308 | } | |
3309 | ||
6b837bc4 | 3310 | qemu_progress_print(100, 0); |
3e85c6fd KW |
3311 | /* |
3312 | * TODO At this point it is possible to check if any clusters that are | |
3313 | * allocated in the COW file are the same in the backing file. If so, they | |
3314 | * could be dropped from the COW file. Don't do this before switching the | |
3315 | * backing file, in case of a crash this would lead to corruption. | |
3316 | */ | |
c2abccec | 3317 | out: |
6b837bc4 | 3318 | qemu_progress_end(); |
3e85c6fd KW |
3319 | /* Cleanup */ |
3320 | if (!unsafe) { | |
26f54e9a | 3321 | blk_unref(blk_old_backing); |
26f54e9a | 3322 | blk_unref(blk_new_backing); |
3e85c6fd | 3323 | } |
396374ca PB |
3324 | qemu_vfree(buf_old); |
3325 | qemu_vfree(buf_new); | |
3e85c6fd | 3326 | |
26f54e9a | 3327 | blk_unref(blk); |
c2abccec MK |
3328 | if (ret) { |
3329 | return 1; | |
3330 | } | |
3e85c6fd KW |
3331 | return 0; |
3332 | } | |
3333 | ||
ae6b0ed6 SH |
3334 | static int img_resize(int argc, char **argv) |
3335 | { | |
6750e795 | 3336 | Error *err = NULL; |
ae6b0ed6 SH |
3337 | int c, ret, relative; |
3338 | const char *filename, *fmt, *size; | |
3339 | int64_t n, total_size; | |
f382d43a | 3340 | bool quiet = false; |
26f54e9a | 3341 | BlockBackend *blk = NULL; |
20caf0f7 | 3342 | QemuOpts *param; |
3babeb15 | 3343 | |
20caf0f7 DXW |
3344 | static QemuOptsList resize_options = { |
3345 | .name = "resize_options", | |
3346 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
3347 | .desc = { | |
3348 | { | |
3349 | .name = BLOCK_OPT_SIZE, | |
3350 | .type = QEMU_OPT_SIZE, | |
3351 | .help = "Virtual disk size" | |
3352 | }, { | |
3353 | /* end of list */ | |
3354 | } | |
ae6b0ed6 | 3355 | }, |
ae6b0ed6 | 3356 | }; |
eb769f74 | 3357 | bool image_opts = false; |
ae6b0ed6 | 3358 | |
e80fec7f KW |
3359 | /* Remove size from argv manually so that negative numbers are not treated |
3360 | * as options by getopt. */ | |
3361 | if (argc < 3) { | |
ac1307ab | 3362 | error_exit("Not enough arguments"); |
e80fec7f KW |
3363 | return 1; |
3364 | } | |
3365 | ||
3366 | size = argv[--argc]; | |
3367 | ||
3368 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
3369 | fmt = NULL; |
3370 | for(;;) { | |
3babeb15 DB |
3371 | static const struct option long_options[] = { |
3372 | {"help", no_argument, 0, 'h'}, | |
3373 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3374 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3375 | {0, 0, 0, 0} |
3376 | }; | |
c9192973 | 3377 | c = getopt_long(argc, argv, ":f:hq", |
3babeb15 | 3378 | long_options, NULL); |
ae6b0ed6 SH |
3379 | if (c == -1) { |
3380 | break; | |
3381 | } | |
3382 | switch(c) { | |
c9192973 SH |
3383 | case ':': |
3384 | missing_argument(argv[optind - 1]); | |
3385 | break; | |
ef87394c | 3386 | case '?': |
c9192973 SH |
3387 | unrecognized_option(argv[optind - 1]); |
3388 | break; | |
ae6b0ed6 SH |
3389 | case 'h': |
3390 | help(); | |
3391 | break; | |
3392 | case 'f': | |
3393 | fmt = optarg; | |
3394 | break; | |
f382d43a MR |
3395 | case 'q': |
3396 | quiet = true; | |
3397 | break; | |
3babeb15 DB |
3398 | case OPTION_OBJECT: { |
3399 | QemuOpts *opts; | |
3400 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3401 | optarg, true); | |
3402 | if (!opts) { | |
3403 | return 1; | |
3404 | } | |
3405 | } break; | |
eb769f74 DB |
3406 | case OPTION_IMAGE_OPTS: |
3407 | image_opts = true; | |
3408 | break; | |
ae6b0ed6 SH |
3409 | } |
3410 | } | |
fc11eb26 | 3411 | if (optind != argc - 1) { |
ac1307ab | 3412 | error_exit("Expecting one image file name"); |
ae6b0ed6 SH |
3413 | } |
3414 | filename = argv[optind++]; | |
ae6b0ed6 | 3415 | |
3babeb15 DB |
3416 | if (qemu_opts_foreach(&qemu_object_opts, |
3417 | user_creatable_add_opts_foreach, | |
51b9b478 | 3418 | NULL, NULL)) { |
3babeb15 DB |
3419 | return 1; |
3420 | } | |
3421 | ||
ae6b0ed6 SH |
3422 | /* Choose grow, shrink, or absolute resize mode */ |
3423 | switch (size[0]) { | |
3424 | case '+': | |
3425 | relative = 1; | |
3426 | size++; | |
3427 | break; | |
3428 | case '-': | |
3429 | relative = -1; | |
3430 | size++; | |
3431 | break; | |
3432 | default: | |
3433 | relative = 0; | |
3434 | break; | |
3435 | } | |
3436 | ||
3437 | /* Parse size */ | |
87ea75d5 | 3438 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
f43e47db | 3439 | qemu_opt_set(param, BLOCK_OPT_SIZE, size, &err); |
6750e795 MA |
3440 | if (err) { |
3441 | error_report_err(err); | |
2a81998a | 3442 | ret = -1; |
20caf0f7 | 3443 | qemu_opts_del(param); |
2a81998a | 3444 | goto out; |
ae6b0ed6 | 3445 | } |
20caf0f7 DXW |
3446 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
3447 | qemu_opts_del(param); | |
ae6b0ed6 | 3448 | |
efaa7c4e | 3449 | blk = img_open(image_opts, filename, fmt, |
55880601 | 3450 | BDRV_O_RDWR | BDRV_O_RESIZE, false, quiet); |
7e7d56d9 | 3451 | if (!blk) { |
2a81998a JS |
3452 | ret = -1; |
3453 | goto out; | |
c2abccec | 3454 | } |
ae6b0ed6 SH |
3455 | |
3456 | if (relative) { | |
f1d3cd79 | 3457 | total_size = blk_getlength(blk) + n * relative; |
ae6b0ed6 SH |
3458 | } else { |
3459 | total_size = n; | |
3460 | } | |
3461 | if (total_size <= 0) { | |
15654a6d | 3462 | error_report("New image size must be positive"); |
c2abccec MK |
3463 | ret = -1; |
3464 | goto out; | |
ae6b0ed6 SH |
3465 | } |
3466 | ||
ed3d2ec9 HR |
3467 | ret = blk_truncate(blk, total_size, &err); |
3468 | if (!ret) { | |
f382d43a | 3469 | qprintf(quiet, "Image resized.\n"); |
ed3d2ec9 HR |
3470 | } else { |
3471 | error_report_err(err); | |
ae6b0ed6 | 3472 | } |
c2abccec | 3473 | out: |
26f54e9a | 3474 | blk_unref(blk); |
c2abccec MK |
3475 | if (ret) { |
3476 | return 1; | |
3477 | } | |
ae6b0ed6 SH |
3478 | return 0; |
3479 | } | |
3480 | ||
76a3a34d | 3481 | static void amend_status_cb(BlockDriverState *bs, |
8b13976d HR |
3482 | int64_t offset, int64_t total_work_size, |
3483 | void *opaque) | |
76a3a34d HR |
3484 | { |
3485 | qemu_progress_print(100.f * offset / total_work_size, 0); | |
3486 | } | |
3487 | ||
6f176b48 HR |
3488 | static int img_amend(int argc, char **argv) |
3489 | { | |
dc523cd3 | 3490 | Error *err = NULL; |
6f176b48 HR |
3491 | int c, ret = 0; |
3492 | char *options = NULL; | |
83d0521a CL |
3493 | QemuOptsList *create_opts = NULL; |
3494 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
3495 | const char *fmt = NULL, *filename, *cache; |
3496 | int flags; | |
ce099547 | 3497 | bool writethrough; |
76a3a34d | 3498 | bool quiet = false, progress = false; |
26f54e9a | 3499 | BlockBackend *blk = NULL; |
6f176b48 | 3500 | BlockDriverState *bs = NULL; |
eb769f74 | 3501 | bool image_opts = false; |
6f176b48 | 3502 | |
bd39e6ed | 3503 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 3504 | for (;;) { |
3babeb15 DB |
3505 | static const struct option long_options[] = { |
3506 | {"help", no_argument, 0, 'h'}, | |
3507 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3508 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3509 | {0, 0, 0, 0} |
3510 | }; | |
c9192973 | 3511 | c = getopt_long(argc, argv, ":ho:f:t:pq", |
3babeb15 | 3512 | long_options, NULL); |
6f176b48 HR |
3513 | if (c == -1) { |
3514 | break; | |
3515 | } | |
3516 | ||
3517 | switch (c) { | |
c9192973 SH |
3518 | case ':': |
3519 | missing_argument(argv[optind - 1]); | |
3520 | break; | |
f7077624 | 3521 | case '?': |
c9192973 SH |
3522 | unrecognized_option(argv[optind - 1]); |
3523 | break; | |
3524 | case 'h': | |
f7077624 SH |
3525 | help(); |
3526 | break; | |
3527 | case 'o': | |
3528 | if (!is_valid_option_list(optarg)) { | |
3529 | error_report("Invalid option list: %s", optarg); | |
3530 | ret = -1; | |
3531 | goto out_no_progress; | |
3532 | } | |
3533 | if (!options) { | |
3534 | options = g_strdup(optarg); | |
3535 | } else { | |
3536 | char *old_options = options; | |
3537 | options = g_strdup_printf("%s,%s", options, optarg); | |
3538 | g_free(old_options); | |
3539 | } | |
3540 | break; | |
3541 | case 'f': | |
3542 | fmt = optarg; | |
3543 | break; | |
3544 | case 't': | |
3545 | cache = optarg; | |
3546 | break; | |
3547 | case 'p': | |
3548 | progress = true; | |
3549 | break; | |
3550 | case 'q': | |
3551 | quiet = true; | |
3552 | break; | |
3553 | case OPTION_OBJECT: | |
3554 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3555 | optarg, true); | |
3556 | if (!opts) { | |
3557 | ret = -1; | |
3558 | goto out_no_progress; | |
3559 | } | |
3560 | break; | |
3561 | case OPTION_IMAGE_OPTS: | |
3562 | image_opts = true; | |
3563 | break; | |
6f176b48 HR |
3564 | } |
3565 | } | |
3566 | ||
a283cb6e | 3567 | if (!options) { |
ac1307ab | 3568 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
3569 | } |
3570 | ||
3babeb15 DB |
3571 | if (qemu_opts_foreach(&qemu_object_opts, |
3572 | user_creatable_add_opts_foreach, | |
51b9b478 | 3573 | NULL, NULL)) { |
3babeb15 DB |
3574 | ret = -1; |
3575 | goto out_no_progress; | |
3576 | } | |
3577 | ||
76a3a34d HR |
3578 | if (quiet) { |
3579 | progress = false; | |
3580 | } | |
3581 | qemu_progress_init(progress, 1.0); | |
3582 | ||
a283cb6e KW |
3583 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
3584 | if (fmt && has_help_option(options)) { | |
3585 | /* If a format is explicitly specified (and possibly no filename is | |
3586 | * given), print option help here */ | |
3587 | ret = print_block_option_help(filename, fmt); | |
3588 | goto out; | |
6f176b48 HR |
3589 | } |
3590 | ||
a283cb6e | 3591 | if (optind != argc - 1) { |
b2f27e44 HR |
3592 | error_report("Expecting one image file name"); |
3593 | ret = -1; | |
3594 | goto out; | |
a283cb6e | 3595 | } |
6f176b48 | 3596 | |
ce099547 KW |
3597 | flags = BDRV_O_RDWR; |
3598 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
bd39e6ed HR |
3599 | if (ret < 0) { |
3600 | error_report("Invalid cache option: %s", cache); | |
3601 | goto out; | |
3602 | } | |
3603 | ||
ce099547 | 3604 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 | 3605 | if (!blk) { |
6f176b48 HR |
3606 | ret = -1; |
3607 | goto out; | |
3608 | } | |
7e7d56d9 | 3609 | bs = blk_bs(blk); |
6f176b48 HR |
3610 | |
3611 | fmt = bs->drv->format_name; | |
3612 | ||
626f84f3 | 3613 | if (has_help_option(options)) { |
a283cb6e | 3614 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
3615 | ret = print_block_option_help(filename, fmt); |
3616 | goto out; | |
3617 | } | |
3618 | ||
b2439d26 HR |
3619 | if (!bs->drv->create_opts) { |
3620 | error_report("Format driver '%s' does not support any options to amend", | |
3621 | fmt); | |
3622 | ret = -1; | |
3623 | goto out; | |
3624 | } | |
3625 | ||
c282e1fd | 3626 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a | 3627 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
ece9086e PB |
3628 | qemu_opts_do_parse(opts, options, NULL, &err); |
3629 | if (err) { | |
3630 | error_report_err(err); | |
3631 | ret = -1; | |
3632 | goto out; | |
6f176b48 HR |
3633 | } |
3634 | ||
76a3a34d HR |
3635 | /* In case the driver does not call amend_status_cb() */ |
3636 | qemu_progress_print(0.f, 0); | |
8b13976d | 3637 | ret = bdrv_amend_options(bs, opts, &amend_status_cb, NULL); |
76a3a34d | 3638 | qemu_progress_print(100.f, 0); |
6f176b48 HR |
3639 | if (ret < 0) { |
3640 | error_report("Error while amending options: %s", strerror(-ret)); | |
3641 | goto out; | |
3642 | } | |
3643 | ||
3644 | out: | |
76a3a34d HR |
3645 | qemu_progress_end(); |
3646 | ||
e814dffc | 3647 | out_no_progress: |
26f54e9a | 3648 | blk_unref(blk); |
83d0521a CL |
3649 | qemu_opts_del(opts); |
3650 | qemu_opts_free(create_opts); | |
626f84f3 KW |
3651 | g_free(options); |
3652 | ||
6f176b48 HR |
3653 | if (ret) { |
3654 | return 1; | |
3655 | } | |
3656 | return 0; | |
3657 | } | |
3658 | ||
b6133b8c KW |
3659 | typedef struct BenchData { |
3660 | BlockBackend *blk; | |
3661 | uint64_t image_size; | |
b6495fa8 | 3662 | bool write; |
b6133b8c | 3663 | int bufsize; |
83de9be0 | 3664 | int step; |
b6133b8c KW |
3665 | int nrreq; |
3666 | int n; | |
55d539c8 KW |
3667 | int flush_interval; |
3668 | bool drain_on_flush; | |
b6133b8c KW |
3669 | uint8_t *buf; |
3670 | QEMUIOVector *qiov; | |
3671 | ||
3672 | int in_flight; | |
55d539c8 | 3673 | bool in_flush; |
b6133b8c KW |
3674 | uint64_t offset; |
3675 | } BenchData; | |
3676 | ||
55d539c8 KW |
3677 | static void bench_undrained_flush_cb(void *opaque, int ret) |
3678 | { | |
3679 | if (ret < 0) { | |
df3c286c | 3680 | error_report("Failed flush request: %s", strerror(-ret)); |
55d539c8 KW |
3681 | exit(EXIT_FAILURE); |
3682 | } | |
3683 | } | |
3684 | ||
b6133b8c KW |
3685 | static void bench_cb(void *opaque, int ret) |
3686 | { | |
3687 | BenchData *b = opaque; | |
3688 | BlockAIOCB *acb; | |
3689 | ||
3690 | if (ret < 0) { | |
df3c286c | 3691 | error_report("Failed request: %s", strerror(-ret)); |
b6133b8c KW |
3692 | exit(EXIT_FAILURE); |
3693 | } | |
55d539c8 KW |
3694 | |
3695 | if (b->in_flush) { | |
3696 | /* Just finished a flush with drained queue: Start next requests */ | |
3697 | assert(b->in_flight == 0); | |
3698 | b->in_flush = false; | |
3699 | } else if (b->in_flight > 0) { | |
3700 | int remaining = b->n - b->in_flight; | |
3701 | ||
b6133b8c KW |
3702 | b->n--; |
3703 | b->in_flight--; | |
55d539c8 KW |
3704 | |
3705 | /* Time for flush? Drain queue if requested, then flush */ | |
3706 | if (b->flush_interval && remaining % b->flush_interval == 0) { | |
3707 | if (!b->in_flight || !b->drain_on_flush) { | |
3708 | BlockCompletionFunc *cb; | |
3709 | ||
3710 | if (b->drain_on_flush) { | |
3711 | b->in_flush = true; | |
3712 | cb = bench_cb; | |
3713 | } else { | |
3714 | cb = bench_undrained_flush_cb; | |
3715 | } | |
3716 | ||
3717 | acb = blk_aio_flush(b->blk, cb, b); | |
3718 | if (!acb) { | |
3719 | error_report("Failed to issue flush request"); | |
3720 | exit(EXIT_FAILURE); | |
3721 | } | |
3722 | } | |
3723 | if (b->drain_on_flush) { | |
3724 | return; | |
3725 | } | |
3726 | } | |
b6133b8c KW |
3727 | } |
3728 | ||
3729 | while (b->n > b->in_flight && b->in_flight < b->nrreq) { | |
4baaa8c3 PB |
3730 | int64_t offset = b->offset; |
3731 | /* blk_aio_* might look for completed I/Os and kick bench_cb | |
3732 | * again, so make sure this operation is counted by in_flight | |
3733 | * and b->offset is ready for the next submission. | |
3734 | */ | |
3735 | b->in_flight++; | |
3736 | b->offset += b->step; | |
3737 | b->offset %= b->image_size; | |
b6495fa8 | 3738 | if (b->write) { |
4baaa8c3 | 3739 | acb = blk_aio_pwritev(b->blk, offset, b->qiov, 0, bench_cb, b); |
b6495fa8 | 3740 | } else { |
4baaa8c3 | 3741 | acb = blk_aio_preadv(b->blk, offset, b->qiov, 0, bench_cb, b); |
b6495fa8 | 3742 | } |
b6133b8c KW |
3743 | if (!acb) { |
3744 | error_report("Failed to issue request"); | |
3745 | exit(EXIT_FAILURE); | |
3746 | } | |
b6133b8c KW |
3747 | } |
3748 | } | |
3749 | ||
3750 | static int img_bench(int argc, char **argv) | |
3751 | { | |
3752 | int c, ret = 0; | |
3753 | const char *fmt = NULL, *filename; | |
3754 | bool quiet = false; | |
3755 | bool image_opts = false; | |
b6495fa8 | 3756 | bool is_write = false; |
b6133b8c KW |
3757 | int count = 75000; |
3758 | int depth = 64; | |
d3199a31 | 3759 | int64_t offset = 0; |
b6133b8c | 3760 | size_t bufsize = 4096; |
b6495fa8 | 3761 | int pattern = 0; |
83de9be0 | 3762 | size_t step = 0; |
55d539c8 KW |
3763 | int flush_interval = 0; |
3764 | bool drain_on_flush = true; | |
b6133b8c KW |
3765 | int64_t image_size; |
3766 | BlockBackend *blk = NULL; | |
3767 | BenchData data = {}; | |
3768 | int flags = 0; | |
604e8613 | 3769 | bool writethrough = false; |
b6133b8c KW |
3770 | struct timeval t1, t2; |
3771 | int i; | |
3772 | ||
3773 | for (;;) { | |
3774 | static const struct option long_options[] = { | |
3775 | {"help", no_argument, 0, 'h'}, | |
55d539c8 | 3776 | {"flush-interval", required_argument, 0, OPTION_FLUSH_INTERVAL}, |
b6133b8c | 3777 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
b6495fa8 | 3778 | {"pattern", required_argument, 0, OPTION_PATTERN}, |
55d539c8 | 3779 | {"no-drain", no_argument, 0, OPTION_NO_DRAIN}, |
b6133b8c KW |
3780 | {0, 0, 0, 0} |
3781 | }; | |
c9192973 | 3782 | c = getopt_long(argc, argv, ":hc:d:f:no:qs:S:t:w", long_options, NULL); |
b6133b8c KW |
3783 | if (c == -1) { |
3784 | break; | |
3785 | } | |
3786 | ||
3787 | switch (c) { | |
c9192973 SH |
3788 | case ':': |
3789 | missing_argument(argv[optind - 1]); | |
3790 | break; | |
b6133b8c | 3791 | case '?': |
c9192973 SH |
3792 | unrecognized_option(argv[optind - 1]); |
3793 | break; | |
3794 | case 'h': | |
b6133b8c KW |
3795 | help(); |
3796 | break; | |
3797 | case 'c': | |
3798 | { | |
8b3c6792 PM |
3799 | unsigned long res; |
3800 | ||
3801 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
b6133b8c KW |
3802 | error_report("Invalid request count specified"); |
3803 | return 1; | |
3804 | } | |
8b3c6792 | 3805 | count = res; |
b6133b8c KW |
3806 | break; |
3807 | } | |
3808 | case 'd': | |
3809 | { | |
8b3c6792 PM |
3810 | unsigned long res; |
3811 | ||
3812 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
b6133b8c KW |
3813 | error_report("Invalid queue depth specified"); |
3814 | return 1; | |
3815 | } | |
8b3c6792 | 3816 | depth = res; |
b6133b8c KW |
3817 | break; |
3818 | } | |
3819 | case 'f': | |
3820 | fmt = optarg; | |
3821 | break; | |
3822 | case 'n': | |
3823 | flags |= BDRV_O_NATIVE_AIO; | |
3824 | break; | |
d3199a31 KW |
3825 | case 'o': |
3826 | { | |
606caa0a MA |
3827 | offset = cvtnum(optarg); |
3828 | if (offset < 0) { | |
d3199a31 KW |
3829 | error_report("Invalid offset specified"); |
3830 | return 1; | |
3831 | } | |
3832 | break; | |
3833 | } | |
3834 | break; | |
b6133b8c KW |
3835 | case 'q': |
3836 | quiet = true; | |
3837 | break; | |
3838 | case 's': | |
3839 | { | |
3840 | int64_t sval; | |
b6133b8c | 3841 | |
606caa0a MA |
3842 | sval = cvtnum(optarg); |
3843 | if (sval < 0 || sval > INT_MAX) { | |
b6133b8c KW |
3844 | error_report("Invalid buffer size specified"); |
3845 | return 1; | |
3846 | } | |
3847 | ||
3848 | bufsize = sval; | |
3849 | break; | |
3850 | } | |
83de9be0 KW |
3851 | case 'S': |
3852 | { | |
3853 | int64_t sval; | |
83de9be0 | 3854 | |
606caa0a MA |
3855 | sval = cvtnum(optarg); |
3856 | if (sval < 0 || sval > INT_MAX) { | |
83de9be0 KW |
3857 | error_report("Invalid step size specified"); |
3858 | return 1; | |
3859 | } | |
3860 | ||
3861 | step = sval; | |
3862 | break; | |
3863 | } | |
b6133b8c KW |
3864 | case 't': |
3865 | ret = bdrv_parse_cache_mode(optarg, &flags, &writethrough); | |
3866 | if (ret < 0) { | |
3867 | error_report("Invalid cache mode"); | |
3868 | ret = -1; | |
3869 | goto out; | |
3870 | } | |
3871 | break; | |
b6495fa8 KW |
3872 | case 'w': |
3873 | flags |= BDRV_O_RDWR; | |
3874 | is_write = true; | |
3875 | break; | |
3876 | case OPTION_PATTERN: | |
3877 | { | |
8b3c6792 PM |
3878 | unsigned long res; |
3879 | ||
3880 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > 0xff) { | |
b6495fa8 KW |
3881 | error_report("Invalid pattern byte specified"); |
3882 | return 1; | |
3883 | } | |
8b3c6792 | 3884 | pattern = res; |
b6495fa8 KW |
3885 | break; |
3886 | } | |
55d539c8 KW |
3887 | case OPTION_FLUSH_INTERVAL: |
3888 | { | |
8b3c6792 PM |
3889 | unsigned long res; |
3890 | ||
3891 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
55d539c8 KW |
3892 | error_report("Invalid flush interval specified"); |
3893 | return 1; | |
3894 | } | |
8b3c6792 | 3895 | flush_interval = res; |
55d539c8 KW |
3896 | break; |
3897 | } | |
3898 | case OPTION_NO_DRAIN: | |
3899 | drain_on_flush = false; | |
3900 | break; | |
b6133b8c KW |
3901 | case OPTION_IMAGE_OPTS: |
3902 | image_opts = true; | |
3903 | break; | |
3904 | } | |
3905 | } | |
3906 | ||
3907 | if (optind != argc - 1) { | |
3908 | error_exit("Expecting one image file name"); | |
3909 | } | |
3910 | filename = argv[argc - 1]; | |
3911 | ||
55d539c8 KW |
3912 | if (!is_write && flush_interval) { |
3913 | error_report("--flush-interval is only available in write tests"); | |
3914 | ret = -1; | |
3915 | goto out; | |
3916 | } | |
3917 | if (flush_interval && flush_interval < depth) { | |
3918 | error_report("Flush interval can't be smaller than depth"); | |
3919 | ret = -1; | |
3920 | goto out; | |
3921 | } | |
3922 | ||
b6133b8c KW |
3923 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
3924 | if (!blk) { | |
3925 | ret = -1; | |
3926 | goto out; | |
3927 | } | |
3928 | ||
3929 | image_size = blk_getlength(blk); | |
3930 | if (image_size < 0) { | |
3931 | ret = image_size; | |
3932 | goto out; | |
3933 | } | |
3934 | ||
3935 | data = (BenchData) { | |
55d539c8 KW |
3936 | .blk = blk, |
3937 | .image_size = image_size, | |
3938 | .bufsize = bufsize, | |
3939 | .step = step ?: bufsize, | |
3940 | .nrreq = depth, | |
3941 | .n = count, | |
3942 | .offset = offset, | |
3943 | .write = is_write, | |
3944 | .flush_interval = flush_interval, | |
3945 | .drain_on_flush = drain_on_flush, | |
b6133b8c | 3946 | }; |
d3199a31 | 3947 | printf("Sending %d %s requests, %d bytes each, %d in parallel " |
83de9be0 | 3948 | "(starting at offset %" PRId64 ", step size %d)\n", |
d3199a31 | 3949 | data.n, data.write ? "write" : "read", data.bufsize, data.nrreq, |
83de9be0 | 3950 | data.offset, data.step); |
55d539c8 KW |
3951 | if (flush_interval) { |
3952 | printf("Sending flush every %d requests\n", flush_interval); | |
3953 | } | |
b6133b8c KW |
3954 | |
3955 | data.buf = blk_blockalign(blk, data.nrreq * data.bufsize); | |
b6495fa8 KW |
3956 | memset(data.buf, pattern, data.nrreq * data.bufsize); |
3957 | ||
b6133b8c KW |
3958 | data.qiov = g_new(QEMUIOVector, data.nrreq); |
3959 | for (i = 0; i < data.nrreq; i++) { | |
3960 | qemu_iovec_init(&data.qiov[i], 1); | |
3961 | qemu_iovec_add(&data.qiov[i], | |
3962 | data.buf + i * data.bufsize, data.bufsize); | |
3963 | } | |
3964 | ||
3965 | gettimeofday(&t1, NULL); | |
3966 | bench_cb(&data, 0); | |
3967 | ||
3968 | while (data.n > 0) { | |
3969 | main_loop_wait(false); | |
3970 | } | |
3971 | gettimeofday(&t2, NULL); | |
3972 | ||
3973 | printf("Run completed in %3.3f seconds.\n", | |
3974 | (t2.tv_sec - t1.tv_sec) | |
3975 | + ((double)(t2.tv_usec - t1.tv_usec) / 1000000)); | |
3976 | ||
3977 | out: | |
3978 | qemu_vfree(data.buf); | |
3979 | blk_unref(blk); | |
3980 | ||
3981 | if (ret) { | |
86ce1f6e RS |
3982 | return 1; |
3983 | } | |
3984 | return 0; | |
3985 | } | |
3986 | ||
3987 | #define C_BS 01 | |
3988 | #define C_COUNT 02 | |
3989 | #define C_IF 04 | |
3990 | #define C_OF 010 | |
f7c15533 | 3991 | #define C_SKIP 020 |
86ce1f6e RS |
3992 | |
3993 | struct DdInfo { | |
3994 | unsigned int flags; | |
3995 | int64_t count; | |
3996 | }; | |
3997 | ||
3998 | struct DdIo { | |
3999 | int bsz; /* Block size */ | |
4000 | char *filename; | |
4001 | uint8_t *buf; | |
f7c15533 | 4002 | int64_t offset; |
86ce1f6e RS |
4003 | }; |
4004 | ||
4005 | struct DdOpts { | |
4006 | const char *name; | |
4007 | int (*f)(const char *, struct DdIo *, struct DdIo *, struct DdInfo *); | |
4008 | unsigned int flag; | |
4009 | }; | |
4010 | ||
4011 | static int img_dd_bs(const char *arg, | |
4012 | struct DdIo *in, struct DdIo *out, | |
4013 | struct DdInfo *dd) | |
4014 | { | |
86ce1f6e RS |
4015 | int64_t res; |
4016 | ||
606caa0a | 4017 | res = cvtnum(arg); |
86ce1f6e | 4018 | |
606caa0a | 4019 | if (res <= 0 || res > INT_MAX) { |
86ce1f6e RS |
4020 | error_report("invalid number: '%s'", arg); |
4021 | return 1; | |
4022 | } | |
4023 | in->bsz = out->bsz = res; | |
4024 | ||
4025 | return 0; | |
4026 | } | |
4027 | ||
4028 | static int img_dd_count(const char *arg, | |
4029 | struct DdIo *in, struct DdIo *out, | |
4030 | struct DdInfo *dd) | |
4031 | { | |
606caa0a | 4032 | dd->count = cvtnum(arg); |
86ce1f6e | 4033 | |
606caa0a | 4034 | if (dd->count < 0) { |
86ce1f6e RS |
4035 | error_report("invalid number: '%s'", arg); |
4036 | return 1; | |
4037 | } | |
4038 | ||
4039 | return 0; | |
4040 | } | |
4041 | ||
4042 | static int img_dd_if(const char *arg, | |
4043 | struct DdIo *in, struct DdIo *out, | |
4044 | struct DdInfo *dd) | |
4045 | { | |
4046 | in->filename = g_strdup(arg); | |
4047 | ||
4048 | return 0; | |
4049 | } | |
4050 | ||
4051 | static int img_dd_of(const char *arg, | |
4052 | struct DdIo *in, struct DdIo *out, | |
4053 | struct DdInfo *dd) | |
4054 | { | |
4055 | out->filename = g_strdup(arg); | |
4056 | ||
4057 | return 0; | |
4058 | } | |
4059 | ||
f7c15533 RS |
4060 | static int img_dd_skip(const char *arg, |
4061 | struct DdIo *in, struct DdIo *out, | |
4062 | struct DdInfo *dd) | |
4063 | { | |
606caa0a | 4064 | in->offset = cvtnum(arg); |
f7c15533 | 4065 | |
606caa0a | 4066 | if (in->offset < 0) { |
f7c15533 RS |
4067 | error_report("invalid number: '%s'", arg); |
4068 | return 1; | |
4069 | } | |
4070 | ||
4071 | return 0; | |
4072 | } | |
4073 | ||
86ce1f6e RS |
4074 | static int img_dd(int argc, char **argv) |
4075 | { | |
4076 | int ret = 0; | |
4077 | char *arg = NULL; | |
4078 | char *tmp; | |
4079 | BlockDriver *drv = NULL, *proto_drv = NULL; | |
4080 | BlockBackend *blk1 = NULL, *blk2 = NULL; | |
4081 | QemuOpts *opts = NULL; | |
4082 | QemuOptsList *create_opts = NULL; | |
4083 | Error *local_err = NULL; | |
4084 | bool image_opts = false; | |
4085 | int c, i; | |
4086 | const char *out_fmt = "raw"; | |
4087 | const char *fmt = NULL; | |
4088 | int64_t size = 0; | |
4089 | int64_t block_count = 0, out_pos, in_pos; | |
4090 | struct DdInfo dd = { | |
4091 | .flags = 0, | |
4092 | .count = 0, | |
4093 | }; | |
4094 | struct DdIo in = { | |
4095 | .bsz = 512, /* Block size is by default 512 bytes */ | |
4096 | .filename = NULL, | |
f7c15533 RS |
4097 | .buf = NULL, |
4098 | .offset = 0 | |
86ce1f6e RS |
4099 | }; |
4100 | struct DdIo out = { | |
4101 | .bsz = 512, | |
4102 | .filename = NULL, | |
f7c15533 RS |
4103 | .buf = NULL, |
4104 | .offset = 0 | |
86ce1f6e RS |
4105 | }; |
4106 | ||
4107 | const struct DdOpts options[] = { | |
4108 | { "bs", img_dd_bs, C_BS }, | |
4109 | { "count", img_dd_count, C_COUNT }, | |
4110 | { "if", img_dd_if, C_IF }, | |
4111 | { "of", img_dd_of, C_OF }, | |
f7c15533 | 4112 | { "skip", img_dd_skip, C_SKIP }, |
86ce1f6e RS |
4113 | { NULL, NULL, 0 } |
4114 | }; | |
4115 | const struct option long_options[] = { | |
4116 | { "help", no_argument, 0, 'h'}, | |
4117 | { "image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, | |
4118 | { 0, 0, 0, 0 } | |
4119 | }; | |
4120 | ||
c9192973 | 4121 | while ((c = getopt_long(argc, argv, ":hf:O:", long_options, NULL))) { |
86ce1f6e RS |
4122 | if (c == EOF) { |
4123 | break; | |
4124 | } | |
4125 | switch (c) { | |
4126 | case 'O': | |
4127 | out_fmt = optarg; | |
4128 | break; | |
4129 | case 'f': | |
4130 | fmt = optarg; | |
4131 | break; | |
c9192973 SH |
4132 | case ':': |
4133 | missing_argument(argv[optind - 1]); | |
4134 | break; | |
86ce1f6e | 4135 | case '?': |
c9192973 SH |
4136 | unrecognized_option(argv[optind - 1]); |
4137 | break; | |
86ce1f6e RS |
4138 | case 'h': |
4139 | help(); | |
4140 | break; | |
4141 | case OPTION_IMAGE_OPTS: | |
4142 | image_opts = true; | |
4143 | break; | |
4144 | } | |
4145 | } | |
4146 | ||
4147 | for (i = optind; i < argc; i++) { | |
4148 | int j; | |
4149 | arg = g_strdup(argv[i]); | |
4150 | ||
4151 | tmp = strchr(arg, '='); | |
4152 | if (tmp == NULL) { | |
4153 | error_report("unrecognized operand %s", arg); | |
4154 | ret = -1; | |
4155 | goto out; | |
4156 | } | |
4157 | ||
4158 | *tmp++ = '\0'; | |
4159 | ||
4160 | for (j = 0; options[j].name != NULL; j++) { | |
4161 | if (!strcmp(arg, options[j].name)) { | |
4162 | break; | |
4163 | } | |
4164 | } | |
4165 | if (options[j].name == NULL) { | |
4166 | error_report("unrecognized operand %s", arg); | |
4167 | ret = -1; | |
4168 | goto out; | |
4169 | } | |
4170 | ||
4171 | if (options[j].f(tmp, &in, &out, &dd) != 0) { | |
4172 | ret = -1; | |
4173 | goto out; | |
4174 | } | |
4175 | dd.flags |= options[j].flag; | |
4176 | g_free(arg); | |
4177 | arg = NULL; | |
4178 | } | |
4179 | ||
4180 | if (!(dd.flags & C_IF && dd.flags & C_OF)) { | |
4181 | error_report("Must specify both input and output files"); | |
4182 | ret = -1; | |
4183 | goto out; | |
4184 | } | |
4185 | blk1 = img_open(image_opts, in.filename, fmt, 0, false, false); | |
4186 | ||
4187 | if (!blk1) { | |
4188 | ret = -1; | |
4189 | goto out; | |
4190 | } | |
4191 | ||
4192 | drv = bdrv_find_format(out_fmt); | |
4193 | if (!drv) { | |
4194 | error_report("Unknown file format"); | |
4195 | ret = -1; | |
4196 | goto out; | |
4197 | } | |
4198 | proto_drv = bdrv_find_protocol(out.filename, true, &local_err); | |
4199 | ||
4200 | if (!proto_drv) { | |
4201 | error_report_err(local_err); | |
4202 | ret = -1; | |
4203 | goto out; | |
4204 | } | |
4205 | if (!drv->create_opts) { | |
4206 | error_report("Format driver '%s' does not support image creation", | |
4207 | drv->format_name); | |
4208 | ret = -1; | |
4209 | goto out; | |
4210 | } | |
4211 | if (!proto_drv->create_opts) { | |
4212 | error_report("Protocol driver '%s' does not support image creation", | |
4213 | proto_drv->format_name); | |
4214 | ret = -1; | |
4215 | goto out; | |
4216 | } | |
4217 | create_opts = qemu_opts_append(create_opts, drv->create_opts); | |
4218 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
4219 | ||
4220 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); | |
4221 | ||
4222 | size = blk_getlength(blk1); | |
4223 | if (size < 0) { | |
4224 | error_report("Failed to get size for '%s'", in.filename); | |
4225 | ret = -1; | |
4226 | goto out; | |
4227 | } | |
4228 | ||
4229 | if (dd.flags & C_COUNT && dd.count <= INT64_MAX / in.bsz && | |
4230 | dd.count * in.bsz < size) { | |
4231 | size = dd.count * in.bsz; | |
4232 | } | |
4233 | ||
f7c15533 RS |
4234 | /* Overflow means the specified offset is beyond input image's size */ |
4235 | if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz || | |
4236 | size < in.bsz * in.offset)) { | |
4237 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, 0, &error_abort); | |
4238 | } else { | |
4239 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, | |
4240 | size - in.bsz * in.offset, &error_abort); | |
4241 | } | |
86ce1f6e RS |
4242 | |
4243 | ret = bdrv_create(drv, out.filename, opts, &local_err); | |
4244 | if (ret < 0) { | |
4245 | error_reportf_err(local_err, | |
4246 | "%s: error while creating output image: ", | |
4247 | out.filename); | |
4248 | ret = -1; | |
4249 | goto out; | |
4250 | } | |
4251 | ||
4252 | blk2 = img_open(image_opts, out.filename, out_fmt, BDRV_O_RDWR, | |
4253 | false, false); | |
4254 | ||
4255 | if (!blk2) { | |
4256 | ret = -1; | |
4257 | goto out; | |
4258 | } | |
4259 | ||
f7c15533 RS |
4260 | if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz || |
4261 | size < in.offset * in.bsz)) { | |
4262 | /* We give a warning if the skip option is bigger than the input | |
4263 | * size and create an empty output disk image (i.e. like dd(1)). | |
4264 | */ | |
4265 | error_report("%s: cannot skip to specified offset", in.filename); | |
4266 | in_pos = size; | |
4267 | } else { | |
4268 | in_pos = in.offset * in.bsz; | |
4269 | } | |
4270 | ||
86ce1f6e RS |
4271 | in.buf = g_new(uint8_t, in.bsz); |
4272 | ||
f7c15533 | 4273 | for (out_pos = 0; in_pos < size; block_count++) { |
86ce1f6e RS |
4274 | int in_ret, out_ret; |
4275 | ||
4276 | if (in_pos + in.bsz > size) { | |
4277 | in_ret = blk_pread(blk1, in_pos, in.buf, size - in_pos); | |
4278 | } else { | |
4279 | in_ret = blk_pread(blk1, in_pos, in.buf, in.bsz); | |
4280 | } | |
4281 | if (in_ret < 0) { | |
4282 | error_report("error while reading from input image file: %s", | |
4283 | strerror(-in_ret)); | |
4284 | ret = -1; | |
4285 | goto out; | |
4286 | } | |
4287 | in_pos += in_ret; | |
4288 | ||
4289 | out_ret = blk_pwrite(blk2, out_pos, in.buf, in_ret, 0); | |
4290 | ||
4291 | if (out_ret < 0) { | |
4292 | error_report("error while writing to output image file: %s", | |
4293 | strerror(-out_ret)); | |
4294 | ret = -1; | |
4295 | goto out; | |
4296 | } | |
4297 | out_pos += out_ret; | |
4298 | } | |
4299 | ||
4300 | out: | |
4301 | g_free(arg); | |
4302 | qemu_opts_del(opts); | |
4303 | qemu_opts_free(create_opts); | |
4304 | blk_unref(blk1); | |
4305 | blk_unref(blk2); | |
4306 | g_free(in.filename); | |
4307 | g_free(out.filename); | |
4308 | g_free(in.buf); | |
4309 | g_free(out.buf); | |
4310 | ||
4311 | if (ret) { | |
b6133b8c KW |
4312 | return 1; |
4313 | } | |
4314 | return 0; | |
4315 | } | |
4316 | ||
4317 | ||
c227f099 | 4318 | static const img_cmd_t img_cmds[] = { |
153859be SB |
4319 | #define DEF(option, callback, arg_string) \ |
4320 | { option, callback }, | |
4321 | #include "qemu-img-cmds.h" | |
4322 | #undef DEF | |
4323 | #undef GEN_DOCS | |
4324 | { NULL, NULL, }, | |
4325 | }; | |
4326 | ||
ea2384d3 FB |
4327 | int main(int argc, char **argv) |
4328 | { | |
c227f099 | 4329 | const img_cmd_t *cmd; |
153859be | 4330 | const char *cmdname; |
2f78e491 | 4331 | Error *local_error = NULL; |
06a1e0c1 | 4332 | char *trace_file = NULL; |
7db1689c | 4333 | int c; |
7db1689c JC |
4334 | static const struct option long_options[] = { |
4335 | {"help", no_argument, 0, 'h'}, | |
10985131 | 4336 | {"version", no_argument, 0, 'V'}, |
06a1e0c1 | 4337 | {"trace", required_argument, NULL, 'T'}, |
7db1689c JC |
4338 | {0, 0, 0, 0} |
4339 | }; | |
ea2384d3 | 4340 | |
526eda14 MK |
4341 | #ifdef CONFIG_POSIX |
4342 | signal(SIGPIPE, SIG_IGN); | |
4343 | #endif | |
4344 | ||
fe4db84d | 4345 | module_call_init(MODULE_INIT_TRACE); |
53f76e58 | 4346 | error_set_progname(argv[0]); |
10f5bff6 | 4347 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 4348 | |
2f78e491 | 4349 | if (qemu_init_main_loop(&local_error)) { |
565f65d2 | 4350 | error_report_err(local_error); |
2f78e491 CN |
4351 | exit(EXIT_FAILURE); |
4352 | } | |
4353 | ||
e8f2d272 | 4354 | qcrypto_init(&error_fatal); |
c2297088 | 4355 | |
064097d9 | 4356 | module_call_init(MODULE_INIT_QOM); |
ea2384d3 | 4357 | bdrv_init(); |
ac1307ab FZ |
4358 | if (argc < 2) { |
4359 | error_exit("Not enough arguments"); | |
4360 | } | |
153859be | 4361 | |
3babeb15 | 4362 | qemu_add_opts(&qemu_object_opts); |
eb769f74 | 4363 | qemu_add_opts(&qemu_source_opts); |
06a1e0c1 | 4364 | qemu_add_opts(&qemu_trace_opts); |
3babeb15 | 4365 | |
c9192973 | 4366 | while ((c = getopt_long(argc, argv, "+:hVT:", long_options, NULL)) != -1) { |
10985131 | 4367 | switch (c) { |
c9192973 SH |
4368 | case ':': |
4369 | missing_argument(argv[optind - 1]); | |
4370 | return 0; | |
4581c16f | 4371 | case '?': |
c9192973 SH |
4372 | unrecognized_option(argv[optind - 1]); |
4373 | return 0; | |
4374 | case 'h': | |
10985131 DL |
4375 | help(); |
4376 | return 0; | |
4377 | case 'V': | |
4378 | printf(QEMU_IMG_VERSION); | |
4379 | return 0; | |
06a1e0c1 DL |
4380 | case 'T': |
4381 | g_free(trace_file); | |
4382 | trace_file = trace_opt_parse(optarg); | |
4383 | break; | |
153859be | 4384 | } |
ea2384d3 | 4385 | } |
153859be | 4386 | |
10985131 | 4387 | cmdname = argv[optind]; |
7db1689c | 4388 | |
10985131 DL |
4389 | /* reset getopt_long scanning */ |
4390 | argc -= optind; | |
4391 | if (argc < 1) { | |
5f6979cb JC |
4392 | return 0; |
4393 | } | |
10985131 | 4394 | argv += optind; |
cfef6a45 | 4395 | optind = 0; |
10985131 | 4396 | |
06a1e0c1 DL |
4397 | if (!trace_init_backends()) { |
4398 | exit(1); | |
4399 | } | |
4400 | trace_init_file(trace_file); | |
4401 | qemu_set_log(LOG_TRACE); | |
4402 | ||
10985131 DL |
4403 | /* find the command */ |
4404 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { | |
4405 | if (!strcmp(cmdname, cmd->name)) { | |
4406 | return cmd->handler(argc, argv); | |
4407 | } | |
4408 | } | |
7db1689c | 4409 | |
153859be | 4410 | /* not found */ |
ac1307ab | 4411 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 4412 | } |