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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 | ||
d2c639d6 | 91 | /* Please keep in synch with qemu-img.texi */ |
ac1307ab | 92 | static void QEMU_NORETURN help(void) |
ea2384d3 | 93 | { |
e00291c0 | 94 | const char *help_msg = |
5f6979cb | 95 | QEMU_IMG_VERSION |
10985131 | 96 | "usage: qemu-img [standard options] command [command options]\n" |
3f020d70 | 97 | "QEMU disk image utility\n" |
98 | "\n" | |
10985131 DL |
99 | " '-h', '--help' display this help and exit\n" |
100 | " '-V', '--version' output version information and exit\n" | |
06a1e0c1 DL |
101 | " '-T', '--trace' [[enable=]<pattern>][,events=<file>][,file=<file>]\n" |
102 | " specify tracing options\n" | |
10985131 | 103 | "\n" |
3f020d70 | 104 | "Command syntax:\n" |
153859be SB |
105 | #define DEF(option, callback, arg_string) \ |
106 | " " arg_string "\n" | |
107 | #include "qemu-img-cmds.h" | |
108 | #undef DEF | |
109 | #undef GEN_DOCS | |
3f020d70 | 110 | "\n" |
111 | "Command parameters:\n" | |
112 | " 'filename' is a disk image filename\n" | |
3babeb15 DB |
113 | " 'objectdef' is a QEMU user creatable object definition. See the qemu(1)\n" |
114 | " manual page for a description of the object properties. The most common\n" | |
115 | " object type is a 'secret', which is used to supply passwords and/or\n" | |
116 | " encryption keys.\n" | |
3f020d70 | 117 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" |
661a0f71 | 118 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
119 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
120 | " 'directsync' and 'unsafe' (default for convert)\n" | |
bb87fdf8 SH |
121 | " 'src_cache' is the cache mode used to read input disk images, the valid\n" |
122 | " options are the same as for the 'cache' option\n" | |
3f020d70 | 123 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
124 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
125 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
126 | " supported. 'b' is ignored.\n" | |
3f020d70 | 127 | " 'output_filename' is the destination disk image filename\n" |
128 | " 'output_fmt' is the destination format\n" | |
129 | " 'options' is a comma separated list of format specific options in a\n" | |
130 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
131 | " used format\n" | |
ef80654d WX |
132 | " 'snapshot_param' is param used for internal snapshot, format\n" |
133 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
134 | " '[ID_OR_NAME]'\n" | |
135 | " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n" | |
136 | " instead\n" | |
3f020d70 | 137 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
138 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
139 | " match exactly. The image doesn't need a working backing file before\n" | |
140 | " rebasing in this case (useful for renaming the backing file)\n" | |
141 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 142 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 143 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
11b6699a PL |
144 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
145 | " contain only zeros for qemu-img to create a sparse image during\n" | |
146 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
147 | " unallocated or zero sectors, and the destination image will always be\n" | |
148 | " fully allocated\n" | |
c054b3fd | 149 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
150 | " '-n' skips the target volume creation (useful if the volume is created\n" |
151 | " prior to running qemu-img)\n" | |
3f020d70 | 152 | "\n" |
4534ff54 KW |
153 | "Parameters to check subcommand:\n" |
154 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
155 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
156 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 157 | " hiding corruption that has already occurred.\n" |
4534ff54 | 158 | "\n" |
3f020d70 | 159 | "Parameters to snapshot subcommand:\n" |
160 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
161 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
162 | " '-c' creates a snapshot\n" | |
163 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
164 | " '-l' lists all snapshots in the given image\n" |
165 | "\n" | |
166 | "Parameters to compare subcommand:\n" | |
167 | " '-f' first image format\n" | |
168 | " '-F' second image format\n" | |
86ce1f6e RS |
169 | " '-s' run in Strict mode - fail on different image size or sector allocation\n" |
170 | "\n" | |
171 | "Parameters to dd subcommand:\n" | |
172 | " 'bs=BYTES' read and write up to BYTES bytes at a time " | |
173 | "(default: 512)\n" | |
174 | " 'count=N' copy only N input blocks\n" | |
175 | " 'if=FILE' read from FILE\n" | |
f7c15533 RS |
176 | " 'of=FILE' write to FILE\n" |
177 | " 'skip=N' skip N bs-sized blocks at the start of input\n"; | |
e00291c0 PB |
178 | |
179 | printf("%s\nSupported formats:", help_msg); | |
00c6d403 | 180 | bdrv_iterate_format(format_print, NULL); |
ea2384d3 | 181 | printf("\n"); |
ac1307ab | 182 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
183 | } |
184 | ||
3babeb15 DB |
185 | static QemuOptsList qemu_object_opts = { |
186 | .name = "object", | |
187 | .implied_opt_name = "qom-type", | |
188 | .head = QTAILQ_HEAD_INITIALIZER(qemu_object_opts.head), | |
189 | .desc = { | |
190 | { } | |
191 | }, | |
192 | }; | |
193 | ||
eb769f74 DB |
194 | static QemuOptsList qemu_source_opts = { |
195 | .name = "source", | |
196 | .implied_opt_name = "file", | |
197 | .head = QTAILQ_HEAD_INITIALIZER(qemu_source_opts.head), | |
198 | .desc = { | |
199 | { } | |
200 | }, | |
201 | }; | |
202 | ||
7c30f657 | 203 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
204 | { |
205 | int ret = 0; | |
206 | if (!quiet) { | |
207 | va_list args; | |
208 | va_start(args, fmt); | |
209 | ret = vprintf(fmt, args); | |
210 | va_end(args); | |
211 | } | |
212 | return ret; | |
213 | } | |
214 | ||
ea2384d3 | 215 | |
4ac8aacd JS |
216 | static int print_block_option_help(const char *filename, const char *fmt) |
217 | { | |
218 | BlockDriver *drv, *proto_drv; | |
83d0521a | 219 | QemuOptsList *create_opts = NULL; |
b65a5e12 | 220 | Error *local_err = NULL; |
4ac8aacd JS |
221 | |
222 | /* Find driver and parse its options */ | |
223 | drv = bdrv_find_format(fmt); | |
224 | if (!drv) { | |
15654a6d | 225 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
226 | return 1; |
227 | } | |
228 | ||
c282e1fd | 229 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
a283cb6e | 230 | if (filename) { |
b65a5e12 | 231 | proto_drv = bdrv_find_protocol(filename, true, &local_err); |
a283cb6e | 232 | if (!proto_drv) { |
2867ce4a | 233 | error_report_err(local_err); |
83d0521a | 234 | qemu_opts_free(create_opts); |
a283cb6e KW |
235 | return 1; |
236 | } | |
c282e1fd | 237 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); |
a283cb6e KW |
238 | } |
239 | ||
83d0521a CL |
240 | qemu_opts_print_help(create_opts); |
241 | qemu_opts_free(create_opts); | |
4ac8aacd JS |
242 | return 0; |
243 | } | |
244 | ||
eb769f74 DB |
245 | |
246 | static int img_open_password(BlockBackend *blk, const char *filename, | |
abb06c5a | 247 | int flags, bool quiet) |
75c23805 FB |
248 | { |
249 | BlockDriverState *bs; | |
75c23805 | 250 | char password[256]; |
eb769f74 DB |
251 | |
252 | bs = blk_bs(blk); | |
4ef130fc DB |
253 | if (bdrv_is_encrypted(bs) && bdrv_key_required(bs) && |
254 | !(flags & BDRV_O_NO_IO)) { | |
eb769f74 DB |
255 | qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); |
256 | if (qemu_read_password(password, sizeof(password)) < 0) { | |
257 | error_report("No password given"); | |
258 | return -1; | |
259 | } | |
260 | if (bdrv_set_key(bs, password) < 0) { | |
261 | error_report("invalid password"); | |
262 | return -1; | |
263 | } | |
264 | } | |
265 | return 0; | |
266 | } | |
267 | ||
268 | ||
efaa7c4e | 269 | static BlockBackend *img_open_opts(const char *optstr, |
ce099547 | 270 | QemuOpts *opts, int flags, bool writethrough, |
abb06c5a | 271 | bool quiet) |
eb769f74 DB |
272 | { |
273 | QDict *options; | |
274 | Error *local_err = NULL; | |
275 | BlockBackend *blk; | |
276 | options = qemu_opts_to_qdict(opts, NULL); | |
efaa7c4e | 277 | blk = blk_new_open(NULL, NULL, options, flags, &local_err); |
eb769f74 | 278 | if (!blk) { |
143605a2 | 279 | error_reportf_err(local_err, "Could not open '%s': ", optstr); |
eb769f74 DB |
280 | return NULL; |
281 | } | |
ce099547 | 282 | blk_set_enable_write_cache(blk, !writethrough); |
eb769f74 | 283 | |
abb06c5a | 284 | if (img_open_password(blk, optstr, flags, quiet) < 0) { |
eb769f74 DB |
285 | blk_unref(blk); |
286 | return NULL; | |
287 | } | |
288 | return blk; | |
289 | } | |
290 | ||
efaa7c4e | 291 | static BlockBackend *img_open_file(const char *filename, |
eb769f74 | 292 | const char *fmt, int flags, |
ce099547 | 293 | bool writethrough, bool quiet) |
eb769f74 DB |
294 | { |
295 | BlockBackend *blk; | |
34b5d2c6 | 296 | Error *local_err = NULL; |
5bd31326 | 297 | QDict *options = NULL; |
ad717139 | 298 | |
75c23805 | 299 | if (fmt) { |
5bd31326 HR |
300 | options = qdict_new(); |
301 | qdict_put(options, "driver", qstring_from_str(fmt)); | |
75c23805 | 302 | } |
b9eaf9ec | 303 | |
efaa7c4e | 304 | blk = blk_new_open(filename, NULL, options, flags, &local_err); |
5bd31326 | 305 | if (!blk) { |
c29b77f9 | 306 | error_reportf_err(local_err, "Could not open '%s': ", filename); |
eb769f74 | 307 | return NULL; |
75c23805 | 308 | } |
ce099547 | 309 | blk_set_enable_write_cache(blk, !writethrough); |
b9eaf9ec | 310 | |
abb06c5a | 311 | if (img_open_password(blk, filename, flags, quiet) < 0) { |
eb769f74 DB |
312 | blk_unref(blk); |
313 | return NULL; | |
314 | } | |
315 | return blk; | |
316 | } | |
317 | ||
318 | ||
efaa7c4e | 319 | static BlockBackend *img_open(bool image_opts, |
eb769f74 | 320 | const char *filename, |
ce099547 | 321 | const char *fmt, int flags, bool writethrough, |
abb06c5a | 322 | bool quiet) |
eb769f74 DB |
323 | { |
324 | BlockBackend *blk; | |
325 | if (image_opts) { | |
326 | QemuOpts *opts; | |
327 | if (fmt) { | |
328 | error_report("--image-opts and --format are mutually exclusive"); | |
329 | return NULL; | |
330 | } | |
331 | opts = qemu_opts_parse_noisily(qemu_find_opts("source"), | |
332 | filename, true); | |
333 | if (!opts) { | |
334 | return NULL; | |
335 | } | |
ce099547 | 336 | blk = img_open_opts(filename, opts, flags, writethrough, quiet); |
eb769f74 | 337 | } else { |
ce099547 | 338 | blk = img_open_file(filename, fmt, flags, writethrough, quiet); |
75c23805 | 339 | } |
7e7d56d9 | 340 | return blk; |
75c23805 FB |
341 | } |
342 | ||
eb769f74 | 343 | |
83d0521a | 344 | static int add_old_style_options(const char *fmt, QemuOpts *opts, |
eec77d9e JS |
345 | const char *base_filename, |
346 | const char *base_fmt) | |
efa84d43 | 347 | { |
6750e795 MA |
348 | Error *err = NULL; |
349 | ||
efa84d43 | 350 | if (base_filename) { |
f43e47db | 351 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename, &err); |
6750e795 | 352 | if (err) { |
15654a6d JS |
353 | error_report("Backing file not supported for file format '%s'", |
354 | fmt); | |
6750e795 | 355 | error_free(err); |
c2abccec | 356 | return -1; |
efa84d43 KW |
357 | } |
358 | } | |
359 | if (base_fmt) { | |
f43e47db | 360 | qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt, &err); |
6750e795 | 361 | if (err) { |
15654a6d JS |
362 | error_report("Backing file format not supported for file " |
363 | "format '%s'", fmt); | |
6750e795 | 364 | error_free(err); |
c2abccec | 365 | return -1; |
efa84d43 KW |
366 | } |
367 | } | |
c2abccec | 368 | return 0; |
efa84d43 KW |
369 | } |
370 | ||
606caa0a MA |
371 | static int64_t cvtnum(const char *s) |
372 | { | |
606caa0a MA |
373 | int64_t ret; |
374 | ||
4fcdf65a | 375 | ret = qemu_strtosz(s, NULL); |
606caa0a MA |
376 | return ret; |
377 | } | |
378 | ||
ea2384d3 FB |
379 | static int img_create(int argc, char **argv) |
380 | { | |
a9300911 | 381 | int c; |
1da7cfbd | 382 | uint64_t img_size = -1; |
ea2384d3 | 383 | const char *fmt = "raw"; |
9230eaf6 | 384 | const char *base_fmt = NULL; |
ea2384d3 FB |
385 | const char *filename; |
386 | const char *base_filename = NULL; | |
9ea2ea71 | 387 | char *options = NULL; |
9b37525a | 388 | Error *local_err = NULL; |
f382d43a | 389 | bool quiet = false; |
3b46e624 | 390 | |
ea2384d3 | 391 | for(;;) { |
3babeb15 DB |
392 | static const struct option long_options[] = { |
393 | {"help", no_argument, 0, 'h'}, | |
394 | {"object", required_argument, 0, OPTION_OBJECT}, | |
395 | {0, 0, 0, 0} | |
396 | }; | |
397 | c = getopt_long(argc, argv, "F:b:f:he6o:q", | |
398 | long_options, NULL); | |
b8fb60da | 399 | if (c == -1) { |
ea2384d3 | 400 | break; |
b8fb60da | 401 | } |
ea2384d3 | 402 | switch(c) { |
ef87394c | 403 | case '?': |
ea2384d3 FB |
404 | case 'h': |
405 | help(); | |
406 | break; | |
9230eaf6 AL |
407 | case 'F': |
408 | base_fmt = optarg; | |
409 | break; | |
ea2384d3 FB |
410 | case 'b': |
411 | base_filename = optarg; | |
412 | break; | |
413 | case 'f': | |
414 | fmt = optarg; | |
415 | break; | |
416 | case 'e': | |
9d42e15d | 417 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 418 | "encryption\' instead!"); |
77386bf6 | 419 | goto fail; |
d8871c5a | 420 | case '6': |
9d42e15d | 421 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 422 | "compat6\' instead!"); |
77386bf6 | 423 | goto fail; |
9ea2ea71 | 424 | case 'o': |
77386bf6 KW |
425 | if (!is_valid_option_list(optarg)) { |
426 | error_report("Invalid option list: %s", optarg); | |
427 | goto fail; | |
428 | } | |
429 | if (!options) { | |
430 | options = g_strdup(optarg); | |
431 | } else { | |
432 | char *old_options = options; | |
433 | options = g_strdup_printf("%s,%s", options, optarg); | |
434 | g_free(old_options); | |
435 | } | |
9ea2ea71 | 436 | break; |
f382d43a MR |
437 | case 'q': |
438 | quiet = true; | |
439 | break; | |
3babeb15 DB |
440 | case OPTION_OBJECT: { |
441 | QemuOpts *opts; | |
442 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
443 | optarg, true); | |
444 | if (!opts) { | |
445 | goto fail; | |
446 | } | |
447 | } break; | |
ea2384d3 FB |
448 | } |
449 | } | |
9230eaf6 | 450 | |
b50cbabc | 451 | /* Get the filename */ |
a283cb6e KW |
452 | filename = (optind < argc) ? argv[optind] : NULL; |
453 | if (options && has_help_option(options)) { | |
454 | g_free(options); | |
455 | return print_block_option_help(filename, fmt); | |
456 | } | |
457 | ||
b8fb60da | 458 | if (optind >= argc) { |
ac1307ab | 459 | error_exit("Expecting image file name"); |
b8fb60da | 460 | } |
a283cb6e | 461 | optind++; |
b50cbabc | 462 | |
3babeb15 DB |
463 | if (qemu_opts_foreach(&qemu_object_opts, |
464 | user_creatable_add_opts_foreach, | |
51b9b478 | 465 | NULL, NULL)) { |
3babeb15 DB |
466 | goto fail; |
467 | } | |
468 | ||
1da7cfbd JS |
469 | /* Get image size, if specified */ |
470 | if (optind < argc) { | |
70b4f4bb | 471 | int64_t sval; |
606caa0a MA |
472 | |
473 | sval = cvtnum(argv[optind++]); | |
474 | if (sval < 0) { | |
79443397 LG |
475 | if (sval == -ERANGE) { |
476 | error_report("Image size must be less than 8 EiB!"); | |
477 | } else { | |
478 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
479 | "G, T, P or E suffixes for "); |
480 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
481 | "petabytes and exabytes."); | |
79443397 | 482 | } |
77386bf6 | 483 | goto fail; |
1da7cfbd JS |
484 | } |
485 | img_size = (uint64_t)sval; | |
486 | } | |
fc11eb26 | 487 | if (optind != argc) { |
ac1307ab | 488 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 489 | } |
1da7cfbd | 490 | |
9b37525a | 491 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
61de4c68 | 492 | options, img_size, 0, &local_err, quiet); |
84d18f06 | 493 | if (local_err) { |
c29b77f9 | 494 | error_reportf_err(local_err, "%s: ", filename); |
77386bf6 | 495 | goto fail; |
c2abccec | 496 | } |
a9300911 | 497 | |
77386bf6 | 498 | g_free(options); |
ea2384d3 | 499 | return 0; |
77386bf6 KW |
500 | |
501 | fail: | |
502 | g_free(options); | |
503 | return 1; | |
ea2384d3 FB |
504 | } |
505 | ||
f382d43a | 506 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 507 | { |
8599ea4c | 508 | QString *str; |
8599ea4c | 509 | QObject *obj; |
7d5e199a | 510 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
511 | |
512 | visit_type_ImageCheck(v, NULL, &check, &error_abort); | |
513 | visit_complete(v, &obj); | |
8599ea4c FS |
514 | str = qobject_to_json_pretty(obj); |
515 | assert(str != NULL); | |
f382d43a | 516 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c | 517 | qobject_decref(obj); |
3b098d56 | 518 | visit_free(v); |
8599ea4c FS |
519 | QDECREF(str); |
520 | } | |
521 | ||
f382d43a | 522 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
523 | { |
524 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 525 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
526 | } else { |
527 | if (check->corruptions) { | |
f382d43a MR |
528 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
529 | "Data may be corrupted, or further writes to the image " | |
530 | "may corrupt it.\n", | |
531 | check->corruptions); | |
8599ea4c FS |
532 | } |
533 | ||
534 | if (check->leaks) { | |
f382d43a MR |
535 | qprintf(quiet, |
536 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
537 | "This means waste of disk space, but no harm to data.\n", | |
538 | check->leaks); | |
8599ea4c FS |
539 | } |
540 | ||
541 | if (check->check_errors) { | |
f382d43a MR |
542 | qprintf(quiet, |
543 | "\n%" PRId64 | |
544 | " internal errors have occurred during the check.\n", | |
545 | check->check_errors); | |
8599ea4c FS |
546 | } |
547 | } | |
548 | ||
549 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
550 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
551 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
552 | check->allocated_clusters, check->total_clusters, | |
553 | check->allocated_clusters * 100.0 / check->total_clusters, | |
554 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
555 | check->compressed_clusters * 100.0 / | |
556 | check->allocated_clusters); | |
8599ea4c FS |
557 | } |
558 | ||
559 | if (check->image_end_offset) { | |
f382d43a MR |
560 | qprintf(quiet, |
561 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
562 | } |
563 | } | |
564 | ||
565 | static int collect_image_check(BlockDriverState *bs, | |
566 | ImageCheck *check, | |
567 | const char *filename, | |
568 | const char *fmt, | |
569 | int fix) | |
570 | { | |
571 | int ret; | |
572 | BdrvCheckResult result; | |
573 | ||
574 | ret = bdrv_check(bs, &result, fix); | |
575 | if (ret < 0) { | |
576 | return ret; | |
577 | } | |
578 | ||
579 | check->filename = g_strdup(filename); | |
580 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
581 | check->check_errors = result.check_errors; | |
582 | check->corruptions = result.corruptions; | |
583 | check->has_corruptions = result.corruptions != 0; | |
584 | check->leaks = result.leaks; | |
585 | check->has_leaks = result.leaks != 0; | |
586 | check->corruptions_fixed = result.corruptions_fixed; | |
587 | check->has_corruptions_fixed = result.corruptions != 0; | |
588 | check->leaks_fixed = result.leaks_fixed; | |
589 | check->has_leaks_fixed = result.leaks != 0; | |
590 | check->image_end_offset = result.image_end_offset; | |
591 | check->has_image_end_offset = result.image_end_offset != 0; | |
592 | check->total_clusters = result.bfi.total_clusters; | |
593 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
594 | check->allocated_clusters = result.bfi.allocated_clusters; | |
595 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
596 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
597 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
598 | check->compressed_clusters = result.bfi.compressed_clusters; |
599 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
600 | |
601 | return 0; | |
602 | } | |
603 | ||
e076f338 KW |
604 | /* |
605 | * Checks an image for consistency. Exit codes: | |
606 | * | |
d6635c4d HR |
607 | * 0 - Check completed, image is good |
608 | * 1 - Check not completed because of internal errors | |
609 | * 2 - Check completed, image is corrupted | |
610 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
611 | * 63 - Checks are not supported by the image format | |
e076f338 | 612 | */ |
1585969c AL |
613 | static int img_check(int argc, char **argv) |
614 | { | |
615 | int c, ret; | |
8599ea4c | 616 | OutputFormat output_format = OFORMAT_HUMAN; |
40055951 | 617 | const char *filename, *fmt, *output, *cache; |
26f54e9a | 618 | BlockBackend *blk; |
1585969c | 619 | BlockDriverState *bs; |
4534ff54 | 620 | int fix = 0; |
ce099547 KW |
621 | int flags = BDRV_O_CHECK; |
622 | bool writethrough; | |
7e7d56d9 | 623 | ImageCheck *check; |
f382d43a | 624 | bool quiet = false; |
eb769f74 | 625 | bool image_opts = false; |
1585969c AL |
626 | |
627 | fmt = NULL; | |
8599ea4c | 628 | output = NULL; |
40055951 | 629 | cache = BDRV_DEFAULT_CACHE; |
ce099547 | 630 | |
1585969c | 631 | for(;;) { |
8599ea4c FS |
632 | int option_index = 0; |
633 | static const struct option long_options[] = { | |
634 | {"help", no_argument, 0, 'h'}, | |
635 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 636 | {"repair", required_argument, 0, 'r'}, |
8599ea4c | 637 | {"output", required_argument, 0, OPTION_OUTPUT}, |
3babeb15 | 638 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 639 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
8599ea4c FS |
640 | {0, 0, 0, 0} |
641 | }; | |
40055951 | 642 | c = getopt_long(argc, argv, "hf:r:T:q", |
8599ea4c | 643 | long_options, &option_index); |
b8fb60da | 644 | if (c == -1) { |
1585969c | 645 | break; |
b8fb60da | 646 | } |
1585969c | 647 | switch(c) { |
ef87394c | 648 | case '?': |
1585969c AL |
649 | case 'h': |
650 | help(); | |
651 | break; | |
652 | case 'f': | |
653 | fmt = optarg; | |
654 | break; | |
4534ff54 KW |
655 | case 'r': |
656 | flags |= BDRV_O_RDWR; | |
657 | ||
658 | if (!strcmp(optarg, "leaks")) { | |
659 | fix = BDRV_FIX_LEAKS; | |
660 | } else if (!strcmp(optarg, "all")) { | |
661 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
662 | } else { | |
ac1307ab FZ |
663 | error_exit("Unknown option value for -r " |
664 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
665 | } |
666 | break; | |
8599ea4c FS |
667 | case OPTION_OUTPUT: |
668 | output = optarg; | |
669 | break; | |
40055951 HR |
670 | case 'T': |
671 | cache = optarg; | |
672 | break; | |
f382d43a MR |
673 | case 'q': |
674 | quiet = true; | |
675 | break; | |
3babeb15 DB |
676 | case OPTION_OBJECT: { |
677 | QemuOpts *opts; | |
678 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
679 | optarg, true); | |
680 | if (!opts) { | |
681 | return 1; | |
682 | } | |
683 | } break; | |
eb769f74 DB |
684 | case OPTION_IMAGE_OPTS: |
685 | image_opts = true; | |
686 | break; | |
1585969c AL |
687 | } |
688 | } | |
fc11eb26 | 689 | if (optind != argc - 1) { |
ac1307ab | 690 | error_exit("Expecting one image file name"); |
b8fb60da | 691 | } |
1585969c AL |
692 | filename = argv[optind++]; |
693 | ||
8599ea4c FS |
694 | if (output && !strcmp(output, "json")) { |
695 | output_format = OFORMAT_JSON; | |
696 | } else if (output && !strcmp(output, "human")) { | |
697 | output_format = OFORMAT_HUMAN; | |
698 | } else if (output) { | |
699 | error_report("--output must be used with human or json as argument."); | |
700 | return 1; | |
701 | } | |
702 | ||
3babeb15 DB |
703 | if (qemu_opts_foreach(&qemu_object_opts, |
704 | user_creatable_add_opts_foreach, | |
51b9b478 | 705 | NULL, NULL)) { |
3babeb15 DB |
706 | return 1; |
707 | } | |
708 | ||
ce099547 | 709 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
40055951 HR |
710 | if (ret < 0) { |
711 | error_report("Invalid source cache option: %s", cache); | |
712 | return 1; | |
713 | } | |
714 | ||
ce099547 | 715 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 MA |
716 | if (!blk) { |
717 | return 1; | |
c2abccec | 718 | } |
7e7d56d9 | 719 | bs = blk_bs(blk); |
8599ea4c FS |
720 | |
721 | check = g_new0(ImageCheck, 1); | |
722 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
723 | |
724 | if (ret == -ENOTSUP) { | |
55d492d7 | 725 | error_report("This image format does not support checks"); |
fefddf95 | 726 | ret = 63; |
8599ea4c | 727 | goto fail; |
e076f338 KW |
728 | } |
729 | ||
8599ea4c FS |
730 | if (check->corruptions_fixed || check->leaks_fixed) { |
731 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 732 | |
8599ea4c FS |
733 | leaks_fixed = check->leaks_fixed; |
734 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 735 | |
8599ea4c | 736 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
737 | qprintf(quiet, |
738 | "The following inconsistencies were found and repaired:\n\n" | |
739 | " %" PRId64 " leaked clusters\n" | |
740 | " %" PRId64 " corruptions\n\n" | |
741 | "Double checking the fixed image now...\n", | |
742 | check->leaks_fixed, | |
743 | check->corruptions_fixed); | |
e076f338 KW |
744 | } |
745 | ||
8599ea4c | 746 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 747 | |
8599ea4c FS |
748 | check->leaks_fixed = leaks_fixed; |
749 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
750 | } |
751 | ||
832390a5 HR |
752 | if (!ret) { |
753 | switch (output_format) { | |
754 | case OFORMAT_HUMAN: | |
755 | dump_human_image_check(check, quiet); | |
756 | break; | |
757 | case OFORMAT_JSON: | |
758 | dump_json_image_check(check, quiet); | |
759 | break; | |
760 | } | |
c6bb9ad1 FS |
761 | } |
762 | ||
8599ea4c | 763 | if (ret || check->check_errors) { |
832390a5 HR |
764 | if (ret) { |
765 | error_report("Check failed: %s", strerror(-ret)); | |
766 | } else { | |
767 | error_report("Check failed"); | |
768 | } | |
8599ea4c FS |
769 | ret = 1; |
770 | goto fail; | |
c2abccec | 771 | } |
e076f338 | 772 | |
8599ea4c FS |
773 | if (check->corruptions) { |
774 | ret = 2; | |
775 | } else if (check->leaks) { | |
776 | ret = 3; | |
e076f338 | 777 | } else { |
8599ea4c | 778 | ret = 0; |
e076f338 | 779 | } |
8599ea4c FS |
780 | |
781 | fail: | |
782 | qapi_free_ImageCheck(check); | |
26f54e9a | 783 | blk_unref(blk); |
8599ea4c | 784 | return ret; |
1585969c AL |
785 | } |
786 | ||
d4a3238a HR |
787 | typedef struct CommonBlockJobCBInfo { |
788 | BlockDriverState *bs; | |
789 | Error **errp; | |
790 | } CommonBlockJobCBInfo; | |
791 | ||
792 | static void common_block_job_cb(void *opaque, int ret) | |
793 | { | |
794 | CommonBlockJobCBInfo *cbi = opaque; | |
795 | ||
796 | if (ret < 0) { | |
797 | error_setg_errno(cbi->errp, -ret, "Block job failed"); | |
798 | } | |
d4a3238a HR |
799 | } |
800 | ||
801 | static void run_block_job(BlockJob *job, Error **errp) | |
802 | { | |
b75536c9 | 803 | AioContext *aio_context = blk_get_aio_context(job->blk); |
d4a3238a | 804 | |
9e944cb4 | 805 | aio_context_acquire(aio_context); |
d4a3238a HR |
806 | do { |
807 | aio_poll(aio_context, true); | |
62547b8a JS |
808 | qemu_progress_print(job->len ? |
809 | ((float)job->offset / job->len * 100.f) : 0.0f, 0); | |
d4a3238a HR |
810 | } while (!job->ready); |
811 | ||
812 | block_job_complete_sync(job, errp); | |
9e944cb4 | 813 | aio_context_release(aio_context); |
687fa1d8 HR |
814 | |
815 | /* A block job may finish instantaneously without publishing any progress, | |
816 | * so just signal completion here */ | |
817 | qemu_progress_print(100.f, 0); | |
d4a3238a HR |
818 | } |
819 | ||
ea2384d3 FB |
820 | static int img_commit(int argc, char **argv) |
821 | { | |
661a0f71 | 822 | int c, ret, flags; |
1b22bffd | 823 | const char *filename, *fmt, *cache, *base; |
26f54e9a | 824 | BlockBackend *blk; |
d4a3238a | 825 | BlockDriverState *bs, *base_bs; |
687fa1d8 | 826 | bool progress = false, quiet = false, drop = false; |
ce099547 | 827 | bool writethrough; |
d4a3238a HR |
828 | Error *local_err = NULL; |
829 | CommonBlockJobCBInfo cbi; | |
eb769f74 | 830 | bool image_opts = false; |
9e944cb4 | 831 | AioContext *aio_context; |
ea2384d3 FB |
832 | |
833 | fmt = NULL; | |
661a0f71 | 834 | cache = BDRV_DEFAULT_CACHE; |
1b22bffd | 835 | base = NULL; |
ea2384d3 | 836 | for(;;) { |
3babeb15 DB |
837 | static const struct option long_options[] = { |
838 | {"help", no_argument, 0, 'h'}, | |
839 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 840 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
841 | {0, 0, 0, 0} |
842 | }; | |
843 | c = getopt_long(argc, argv, "f:ht:b:dpq", | |
844 | long_options, NULL); | |
b8fb60da | 845 | if (c == -1) { |
ea2384d3 | 846 | break; |
b8fb60da | 847 | } |
ea2384d3 | 848 | switch(c) { |
ef87394c | 849 | case '?': |
ea2384d3 FB |
850 | case 'h': |
851 | help(); | |
852 | break; | |
853 | case 'f': | |
854 | fmt = optarg; | |
855 | break; | |
661a0f71 FS |
856 | case 't': |
857 | cache = optarg; | |
858 | break; | |
1b22bffd HR |
859 | case 'b': |
860 | base = optarg; | |
861 | /* -b implies -d */ | |
862 | drop = true; | |
863 | break; | |
9a86fe48 HR |
864 | case 'd': |
865 | drop = true; | |
866 | break; | |
687fa1d8 HR |
867 | case 'p': |
868 | progress = true; | |
869 | break; | |
f382d43a MR |
870 | case 'q': |
871 | quiet = true; | |
872 | break; | |
3babeb15 DB |
873 | case OPTION_OBJECT: { |
874 | QemuOpts *opts; | |
875 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
876 | optarg, true); | |
877 | if (!opts) { | |
878 | return 1; | |
879 | } | |
880 | } break; | |
eb769f74 DB |
881 | case OPTION_IMAGE_OPTS: |
882 | image_opts = true; | |
883 | break; | |
ea2384d3 FB |
884 | } |
885 | } | |
687fa1d8 HR |
886 | |
887 | /* Progress is not shown in Quiet mode */ | |
888 | if (quiet) { | |
889 | progress = false; | |
890 | } | |
891 | ||
fc11eb26 | 892 | if (optind != argc - 1) { |
ac1307ab | 893 | error_exit("Expecting one image file name"); |
b8fb60da | 894 | } |
ea2384d3 FB |
895 | filename = argv[optind++]; |
896 | ||
3babeb15 DB |
897 | if (qemu_opts_foreach(&qemu_object_opts, |
898 | user_creatable_add_opts_foreach, | |
51b9b478 | 899 | NULL, NULL)) { |
3babeb15 DB |
900 | return 1; |
901 | } | |
902 | ||
9a86fe48 | 903 | flags = BDRV_O_RDWR | BDRV_O_UNMAP; |
ce099547 | 904 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
905 | if (ret < 0) { |
906 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 907 | return 1; |
661a0f71 FS |
908 | } |
909 | ||
ce099547 | 910 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 MA |
911 | if (!blk) { |
912 | return 1; | |
c2abccec | 913 | } |
7e7d56d9 MA |
914 | bs = blk_bs(blk); |
915 | ||
687fa1d8 HR |
916 | qemu_progress_init(progress, 1.f); |
917 | qemu_progress_print(0.f, 100); | |
918 | ||
1b22bffd HR |
919 | if (base) { |
920 | base_bs = bdrv_find_backing_image(bs, base); | |
921 | if (!base_bs) { | |
6b33f3ae HR |
922 | error_setg(&local_err, |
923 | "Did not find '%s' in the backing chain of '%s'", | |
924 | base, filename); | |
1b22bffd HR |
925 | goto done; |
926 | } | |
927 | } else { | |
928 | /* This is different from QMP, which by default uses the deepest file in | |
929 | * the backing chain (i.e., the very base); however, the traditional | |
930 | * behavior of qemu-img commit is using the immediate backing file. */ | |
760e0063 | 931 | base_bs = backing_bs(bs); |
1b22bffd HR |
932 | if (!base_bs) { |
933 | error_setg(&local_err, "Image does not have a backing file"); | |
934 | goto done; | |
935 | } | |
d4a3238a HR |
936 | } |
937 | ||
938 | cbi = (CommonBlockJobCBInfo){ | |
939 | .errp = &local_err, | |
940 | .bs = bs, | |
941 | }; | |
942 | ||
9e944cb4 PB |
943 | aio_context = bdrv_get_aio_context(bs); |
944 | aio_context_acquire(aio_context); | |
47970dfb JS |
945 | commit_active_start("commit", bs, base_bs, BLOCK_JOB_DEFAULT, 0, |
946 | BLOCKDEV_ON_ERROR_REPORT, common_block_job_cb, &cbi, | |
947 | &local_err, false); | |
9e944cb4 | 948 | aio_context_release(aio_context); |
d4a3238a HR |
949 | if (local_err) { |
950 | goto done; | |
ea2384d3 FB |
951 | } |
952 | ||
3f09bfbc KW |
953 | /* When the block job completes, the BlockBackend reference will point to |
954 | * the old backing file. In order to avoid that the top image is already | |
955 | * deleted, so we can still empty it afterwards, increment the reference | |
956 | * counter here preemptively. */ | |
9a86fe48 | 957 | if (!drop) { |
3f09bfbc | 958 | bdrv_ref(bs); |
9a86fe48 HR |
959 | } |
960 | ||
d4a3238a | 961 | run_block_job(bs->job, &local_err); |
9a86fe48 HR |
962 | if (local_err) { |
963 | goto unref_backing; | |
964 | } | |
965 | ||
3f09bfbc KW |
966 | if (!drop && bs->drv->bdrv_make_empty) { |
967 | ret = bs->drv->bdrv_make_empty(bs); | |
9a86fe48 HR |
968 | if (ret) { |
969 | error_setg_errno(&local_err, -ret, "Could not empty %s", | |
970 | filename); | |
971 | goto unref_backing; | |
972 | } | |
973 | } | |
974 | ||
975 | unref_backing: | |
976 | if (!drop) { | |
3f09bfbc | 977 | bdrv_unref(bs); |
9a86fe48 | 978 | } |
d4a3238a HR |
979 | |
980 | done: | |
687fa1d8 HR |
981 | qemu_progress_end(); |
982 | ||
26f54e9a | 983 | blk_unref(blk); |
d4a3238a HR |
984 | |
985 | if (local_err) { | |
6936f299 | 986 | error_report_err(local_err); |
c2abccec MK |
987 | return 1; |
988 | } | |
d4a3238a HR |
989 | |
990 | qprintf(quiet, "Image committed.\n"); | |
ea2384d3 FB |
991 | return 0; |
992 | } | |
993 | ||
f58c7b35 TS |
994 | /* |
995 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
996 | * a non-NUL byte. | |
997 | * | |
998 | * 'pnum' is set to the number of sectors (including and immediately following | |
999 | * the first one) that are known to be in the same allocated/unallocated state. | |
1000 | */ | |
ea2384d3 FB |
1001 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
1002 | { | |
1a6d39fd SH |
1003 | bool is_zero; |
1004 | int i; | |
ea2384d3 FB |
1005 | |
1006 | if (n <= 0) { | |
1007 | *pnum = 0; | |
1008 | return 0; | |
1009 | } | |
1a6d39fd | 1010 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
1011 | for(i = 1; i < n; i++) { |
1012 | buf += 512; | |
1a6d39fd | 1013 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 1014 | break; |
1a6d39fd | 1015 | } |
ea2384d3 FB |
1016 | } |
1017 | *pnum = i; | |
1a6d39fd | 1018 | return !is_zero; |
ea2384d3 FB |
1019 | } |
1020 | ||
a22f123c KW |
1021 | /* |
1022 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
1023 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
1024 | * breaking up write requests for only small sparse areas. | |
1025 | */ | |
1026 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
1027 | int min) | |
1028 | { | |
1029 | int ret; | |
1030 | int num_checked, num_used; | |
1031 | ||
1032 | if (n < min) { | |
1033 | min = n; | |
1034 | } | |
1035 | ||
1036 | ret = is_allocated_sectors(buf, n, pnum); | |
1037 | if (!ret) { | |
1038 | return ret; | |
1039 | } | |
1040 | ||
1041 | num_used = *pnum; | |
1042 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1043 | n -= *pnum; | |
1044 | num_checked = num_used; | |
1045 | ||
1046 | while (n > 0) { | |
1047 | ret = is_allocated_sectors(buf, n, pnum); | |
1048 | ||
1049 | buf += BDRV_SECTOR_SIZE * *pnum; | |
1050 | n -= *pnum; | |
1051 | num_checked += *pnum; | |
1052 | if (ret) { | |
1053 | num_used = num_checked; | |
1054 | } else if (*pnum >= min) { | |
1055 | break; | |
1056 | } | |
1057 | } | |
1058 | ||
1059 | *pnum = num_used; | |
1060 | return 1; | |
1061 | } | |
1062 | ||
3e85c6fd KW |
1063 | /* |
1064 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
1065 | * buffers matches, non-zero otherwise. | |
1066 | * | |
1067 | * pnum is set to the number of sectors (including and immediately following | |
1068 | * the first one) that are known to have the same comparison result | |
1069 | */ | |
1070 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
1071 | int *pnum) | |
1072 | { | |
8c1ac475 RK |
1073 | bool res; |
1074 | int i; | |
3e85c6fd KW |
1075 | |
1076 | if (n <= 0) { | |
1077 | *pnum = 0; | |
1078 | return 0; | |
1079 | } | |
1080 | ||
1081 | res = !!memcmp(buf1, buf2, 512); | |
1082 | for(i = 1; i < n; i++) { | |
1083 | buf1 += 512; | |
1084 | buf2 += 512; | |
1085 | ||
1086 | if (!!memcmp(buf1, buf2, 512) != res) { | |
1087 | break; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | *pnum = i; | |
1092 | return res; | |
1093 | } | |
1094 | ||
80ee15a6 | 1095 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 1096 | |
d14ed18c MR |
1097 | static int64_t sectors_to_bytes(int64_t sectors) |
1098 | { | |
1099 | return sectors << BDRV_SECTOR_BITS; | |
1100 | } | |
1101 | ||
1102 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
1103 | { | |
1104 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
1105 | } | |
1106 | ||
1107 | /* | |
1108 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
1109 | * | |
1110 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
1111 | * data and negative value on error. | |
1112 | * | |
f1d3cd79 | 1113 | * @param blk: BlockBackend for the image |
d14ed18c MR |
1114 | * @param sect_num: Number of first sector to check |
1115 | * @param sect_count: Number of sectors to check | |
1116 | * @param filename: Name of disk file we are checking (logging purpose) | |
1117 | * @param buffer: Allocated buffer for storing read data | |
1118 | * @param quiet: Flag for quiet mode | |
1119 | */ | |
f1d3cd79 | 1120 | static int check_empty_sectors(BlockBackend *blk, int64_t sect_num, |
d14ed18c MR |
1121 | int sect_count, const char *filename, |
1122 | uint8_t *buffer, bool quiet) | |
1123 | { | |
1124 | int pnum, ret = 0; | |
9166920a EB |
1125 | ret = blk_pread(blk, sect_num << BDRV_SECTOR_BITS, buffer, |
1126 | sect_count << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1127 | if (ret < 0) { |
1128 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
1129 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
1130 | return ret; | |
1131 | } | |
1132 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
1133 | if (ret || pnum != sect_count) { | |
1134 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
1135 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
1136 | return 1; | |
1137 | } | |
1138 | ||
1139 | return 0; | |
1140 | } | |
1141 | ||
1142 | /* | |
1143 | * Compares two images. Exit codes: | |
1144 | * | |
1145 | * 0 - Images are identical | |
1146 | * 1 - Images differ | |
1147 | * >1 - Error occurred | |
1148 | */ | |
1149 | static int img_compare(int argc, char **argv) | |
1150 | { | |
40055951 | 1151 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 1152 | BlockBackend *blk1, *blk2; |
d14ed18c MR |
1153 | BlockDriverState *bs1, *bs2; |
1154 | int64_t total_sectors1, total_sectors2; | |
1155 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
1156 | int pnum1, pnum2; | |
1157 | int allocated1, allocated2; | |
1158 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
1159 | bool progress = false, quiet = false, strict = false; | |
40055951 | 1160 | int flags; |
ce099547 | 1161 | bool writethrough; |
d14ed18c MR |
1162 | int64_t total_sectors; |
1163 | int64_t sector_num = 0; | |
1164 | int64_t nb_sectors; | |
1165 | int c, pnum; | |
d14ed18c | 1166 | uint64_t progress_base; |
eb769f74 | 1167 | bool image_opts = false; |
d14ed18c | 1168 | |
40055951 | 1169 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 1170 | for (;;) { |
3babeb15 DB |
1171 | static const struct option long_options[] = { |
1172 | {"help", no_argument, 0, 'h'}, | |
1173 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1174 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
1175 | {0, 0, 0, 0} |
1176 | }; | |
1177 | c = getopt_long(argc, argv, "hf:F:T:pqs", | |
1178 | long_options, NULL); | |
d14ed18c MR |
1179 | if (c == -1) { |
1180 | break; | |
1181 | } | |
1182 | switch (c) { | |
1183 | case '?': | |
1184 | case 'h': | |
1185 | help(); | |
1186 | break; | |
1187 | case 'f': | |
1188 | fmt1 = optarg; | |
1189 | break; | |
1190 | case 'F': | |
1191 | fmt2 = optarg; | |
1192 | break; | |
40055951 HR |
1193 | case 'T': |
1194 | cache = optarg; | |
1195 | break; | |
d14ed18c MR |
1196 | case 'p': |
1197 | progress = true; | |
1198 | break; | |
1199 | case 'q': | |
1200 | quiet = true; | |
1201 | break; | |
1202 | case 's': | |
1203 | strict = true; | |
1204 | break; | |
3babeb15 DB |
1205 | case OPTION_OBJECT: { |
1206 | QemuOpts *opts; | |
1207 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1208 | optarg, true); | |
1209 | if (!opts) { | |
1210 | ret = 2; | |
1211 | goto out4; | |
1212 | } | |
1213 | } break; | |
eb769f74 DB |
1214 | case OPTION_IMAGE_OPTS: |
1215 | image_opts = true; | |
1216 | break; | |
d14ed18c MR |
1217 | } |
1218 | } | |
1219 | ||
1220 | /* Progress is not shown in Quiet mode */ | |
1221 | if (quiet) { | |
1222 | progress = false; | |
1223 | } | |
1224 | ||
1225 | ||
fc11eb26 | 1226 | if (optind != argc - 2) { |
ac1307ab | 1227 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1228 | } |
1229 | filename1 = argv[optind++]; | |
1230 | filename2 = argv[optind++]; | |
1231 | ||
3babeb15 DB |
1232 | if (qemu_opts_foreach(&qemu_object_opts, |
1233 | user_creatable_add_opts_foreach, | |
51b9b478 | 1234 | NULL, NULL)) { |
3babeb15 DB |
1235 | ret = 2; |
1236 | goto out4; | |
1237 | } | |
1238 | ||
cbda016d SH |
1239 | /* Initialize before goto out */ |
1240 | qemu_progress_init(progress, 2.0); | |
1241 | ||
ce099547 KW |
1242 | flags = 0; |
1243 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
40055951 HR |
1244 | if (ret < 0) { |
1245 | error_report("Invalid source cache option: %s", cache); | |
1246 | ret = 2; | |
1247 | goto out3; | |
1248 | } | |
1249 | ||
ce099547 | 1250 | blk1 = img_open(image_opts, filename1, fmt1, flags, writethrough, quiet); |
7e7d56d9 | 1251 | if (!blk1) { |
d14ed18c | 1252 | ret = 2; |
7e7d56d9 | 1253 | goto out3; |
d14ed18c MR |
1254 | } |
1255 | ||
ce099547 | 1256 | blk2 = img_open(image_opts, filename2, fmt2, flags, writethrough, quiet); |
7e7d56d9 | 1257 | if (!blk2) { |
d14ed18c | 1258 | ret = 2; |
7e7d56d9 | 1259 | goto out2; |
d14ed18c | 1260 | } |
eb769f74 | 1261 | bs1 = blk_bs(blk1); |
7e7d56d9 | 1262 | bs2 = blk_bs(blk2); |
d14ed18c | 1263 | |
f1d3cd79 HR |
1264 | buf1 = blk_blockalign(blk1, IO_BUF_SIZE); |
1265 | buf2 = blk_blockalign(blk2, IO_BUF_SIZE); | |
1266 | total_sectors1 = blk_nb_sectors(blk1); | |
52bf1e72 MA |
1267 | if (total_sectors1 < 0) { |
1268 | error_report("Can't get size of %s: %s", | |
1269 | filename1, strerror(-total_sectors1)); | |
1270 | ret = 4; | |
1271 | goto out; | |
1272 | } | |
f1d3cd79 | 1273 | total_sectors2 = blk_nb_sectors(blk2); |
52bf1e72 MA |
1274 | if (total_sectors2 < 0) { |
1275 | error_report("Can't get size of %s: %s", | |
1276 | filename2, strerror(-total_sectors2)); | |
1277 | ret = 4; | |
1278 | goto out; | |
1279 | } | |
d14ed18c MR |
1280 | total_sectors = MIN(total_sectors1, total_sectors2); |
1281 | progress_base = MAX(total_sectors1, total_sectors2); | |
1282 | ||
1283 | qemu_progress_print(0, 100); | |
1284 | ||
1285 | if (strict && total_sectors1 != total_sectors2) { | |
1286 | ret = 1; | |
1287 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1288 | goto out; | |
1289 | } | |
1290 | ||
1291 | for (;;) { | |
25ad8e6e | 1292 | int64_t status1, status2; |
67a0fd2a FZ |
1293 | BlockDriverState *file; |
1294 | ||
d14ed18c MR |
1295 | nb_sectors = sectors_to_process(total_sectors, sector_num); |
1296 | if (nb_sectors <= 0) { | |
1297 | break; | |
1298 | } | |
25ad8e6e FZ |
1299 | status1 = bdrv_get_block_status_above(bs1, NULL, sector_num, |
1300 | total_sectors1 - sector_num, | |
67a0fd2a | 1301 | &pnum1, &file); |
25ad8e6e | 1302 | if (status1 < 0) { |
d14ed18c MR |
1303 | ret = 3; |
1304 | error_report("Sector allocation test failed for %s", filename1); | |
1305 | goto out; | |
1306 | } | |
25ad8e6e | 1307 | allocated1 = status1 & BDRV_BLOCK_ALLOCATED; |
d14ed18c | 1308 | |
25ad8e6e FZ |
1309 | status2 = bdrv_get_block_status_above(bs2, NULL, sector_num, |
1310 | total_sectors2 - sector_num, | |
67a0fd2a | 1311 | &pnum2, &file); |
25ad8e6e | 1312 | if (status2 < 0) { |
d14ed18c MR |
1313 | ret = 3; |
1314 | error_report("Sector allocation test failed for %s", filename2); | |
1315 | goto out; | |
1316 | } | |
25ad8e6e FZ |
1317 | allocated2 = status2 & BDRV_BLOCK_ALLOCATED; |
1318 | if (pnum1) { | |
1319 | nb_sectors = MIN(nb_sectors, pnum1); | |
1320 | } | |
1321 | if (pnum2) { | |
1322 | nb_sectors = MIN(nb_sectors, pnum2); | |
1323 | } | |
d14ed18c | 1324 | |
25ad8e6e FZ |
1325 | if (strict) { |
1326 | if ((status1 & ~BDRV_BLOCK_OFFSET_MASK) != | |
1327 | (status2 & ~BDRV_BLOCK_OFFSET_MASK)) { | |
1328 | ret = 1; | |
1329 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1330 | " block status mismatch!\n", | |
1331 | sectors_to_bytes(sector_num)); | |
1332 | goto out; | |
1333 | } | |
1334 | } | |
1335 | if ((status1 & BDRV_BLOCK_ZERO) && (status2 & BDRV_BLOCK_ZERO)) { | |
1336 | nb_sectors = MIN(pnum1, pnum2); | |
1337 | } else if (allocated1 == allocated2) { | |
d14ed18c | 1338 | if (allocated1) { |
9166920a EB |
1339 | ret = blk_pread(blk1, sector_num << BDRV_SECTOR_BITS, buf1, |
1340 | nb_sectors << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1341 | if (ret < 0) { |
1342 | error_report("Error while reading offset %" PRId64 " of %s:" | |
1343 | " %s", sectors_to_bytes(sector_num), filename1, | |
1344 | strerror(-ret)); | |
1345 | ret = 4; | |
1346 | goto out; | |
1347 | } | |
9166920a EB |
1348 | ret = blk_pread(blk2, sector_num << BDRV_SECTOR_BITS, buf2, |
1349 | nb_sectors << BDRV_SECTOR_BITS); | |
d14ed18c MR |
1350 | if (ret < 0) { |
1351 | error_report("Error while reading offset %" PRId64 | |
1352 | " of %s: %s", sectors_to_bytes(sector_num), | |
1353 | filename2, strerror(-ret)); | |
1354 | ret = 4; | |
1355 | goto out; | |
1356 | } | |
1357 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1358 | if (ret || pnum != nb_sectors) { | |
d14ed18c MR |
1359 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1360 | sectors_to_bytes( | |
1361 | ret ? sector_num : sector_num + pnum)); | |
36452f12 | 1362 | ret = 1; |
d14ed18c MR |
1363 | goto out; |
1364 | } | |
1365 | } | |
1366 | } else { | |
d14ed18c MR |
1367 | |
1368 | if (allocated1) { | |
f1d3cd79 | 1369 | ret = check_empty_sectors(blk1, sector_num, nb_sectors, |
d14ed18c MR |
1370 | filename1, buf1, quiet); |
1371 | } else { | |
f1d3cd79 | 1372 | ret = check_empty_sectors(blk2, sector_num, nb_sectors, |
d14ed18c MR |
1373 | filename2, buf1, quiet); |
1374 | } | |
1375 | if (ret) { | |
1376 | if (ret < 0) { | |
d14ed18c MR |
1377 | error_report("Error while reading offset %" PRId64 ": %s", |
1378 | sectors_to_bytes(sector_num), strerror(-ret)); | |
36452f12 | 1379 | ret = 4; |
d14ed18c MR |
1380 | } |
1381 | goto out; | |
1382 | } | |
1383 | } | |
1384 | sector_num += nb_sectors; | |
1385 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1386 | } | |
1387 | ||
1388 | if (total_sectors1 != total_sectors2) { | |
f1d3cd79 | 1389 | BlockBackend *blk_over; |
d14ed18c MR |
1390 | int64_t total_sectors_over; |
1391 | const char *filename_over; | |
1392 | ||
1393 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1394 | if (total_sectors1 > total_sectors2) { | |
1395 | total_sectors_over = total_sectors1; | |
f1d3cd79 | 1396 | blk_over = blk1; |
d14ed18c MR |
1397 | filename_over = filename1; |
1398 | } else { | |
1399 | total_sectors_over = total_sectors2; | |
f1d3cd79 | 1400 | blk_over = blk2; |
d14ed18c MR |
1401 | filename_over = filename2; |
1402 | } | |
1403 | ||
1404 | for (;;) { | |
1405 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1406 | if (nb_sectors <= 0) { | |
1407 | break; | |
1408 | } | |
f1d3cd79 | 1409 | ret = bdrv_is_allocated_above(blk_bs(blk_over), NULL, sector_num, |
d14ed18c MR |
1410 | nb_sectors, &pnum); |
1411 | if (ret < 0) { | |
1412 | ret = 3; | |
1413 | error_report("Sector allocation test failed for %s", | |
1414 | filename_over); | |
1415 | goto out; | |
1416 | ||
1417 | } | |
1418 | nb_sectors = pnum; | |
1419 | if (ret) { | |
f1d3cd79 | 1420 | ret = check_empty_sectors(blk_over, sector_num, nb_sectors, |
d14ed18c MR |
1421 | filename_over, buf1, quiet); |
1422 | if (ret) { | |
1423 | if (ret < 0) { | |
d14ed18c MR |
1424 | error_report("Error while reading offset %" PRId64 |
1425 | " of %s: %s", sectors_to_bytes(sector_num), | |
1426 | filename_over, strerror(-ret)); | |
36452f12 | 1427 | ret = 4; |
d14ed18c MR |
1428 | } |
1429 | goto out; | |
1430 | } | |
1431 | } | |
1432 | sector_num += nb_sectors; | |
1433 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1434 | } | |
1435 | } | |
1436 | ||
1437 | qprintf(quiet, "Images are identical.\n"); | |
1438 | ret = 0; | |
1439 | ||
1440 | out: | |
d14ed18c MR |
1441 | qemu_vfree(buf1); |
1442 | qemu_vfree(buf2); | |
26f54e9a | 1443 | blk_unref(blk2); |
d14ed18c | 1444 | out2: |
26f54e9a | 1445 | blk_unref(blk1); |
d14ed18c MR |
1446 | out3: |
1447 | qemu_progress_end(); | |
3babeb15 | 1448 | out4: |
d14ed18c MR |
1449 | return ret; |
1450 | } | |
1451 | ||
690c7301 KW |
1452 | enum ImgConvertBlockStatus { |
1453 | BLK_DATA, | |
1454 | BLK_ZERO, | |
1455 | BLK_BACKING_FILE, | |
1456 | }; | |
1457 | ||
1458 | typedef struct ImgConvertState { | |
1459 | BlockBackend **src; | |
1460 | int64_t *src_sectors; | |
1461 | int src_cur, src_num; | |
1462 | int64_t src_cur_offset; | |
1463 | int64_t total_sectors; | |
1464 | int64_t allocated_sectors; | |
1465 | enum ImgConvertBlockStatus status; | |
1466 | int64_t sector_next_status; | |
1467 | BlockBackend *target; | |
1468 | bool has_zero_init; | |
1469 | bool compressed; | |
1470 | bool target_has_backing; | |
1471 | int min_sparse; | |
1472 | size_t cluster_sectors; | |
1473 | size_t buf_sectors; | |
1474 | } ImgConvertState; | |
1475 | ||
1476 | static void convert_select_part(ImgConvertState *s, int64_t sector_num) | |
1477 | { | |
1478 | assert(sector_num >= s->src_cur_offset); | |
1479 | while (sector_num - s->src_cur_offset >= s->src_sectors[s->src_cur]) { | |
1480 | s->src_cur_offset += s->src_sectors[s->src_cur]; | |
1481 | s->src_cur++; | |
1482 | assert(s->src_cur < s->src_num); | |
1483 | } | |
1484 | } | |
1485 | ||
1486 | static int convert_iteration_sectors(ImgConvertState *s, int64_t sector_num) | |
1487 | { | |
1488 | int64_t ret; | |
1489 | int n; | |
1490 | ||
1491 | convert_select_part(s, sector_num); | |
1492 | ||
1493 | assert(s->total_sectors > sector_num); | |
1494 | n = MIN(s->total_sectors - sector_num, BDRV_REQUEST_MAX_SECTORS); | |
1495 | ||
1496 | if (s->sector_next_status <= sector_num) { | |
67a0fd2a | 1497 | BlockDriverState *file; |
690c7301 KW |
1498 | ret = bdrv_get_block_status(blk_bs(s->src[s->src_cur]), |
1499 | sector_num - s->src_cur_offset, | |
67a0fd2a | 1500 | n, &n, &file); |
690c7301 KW |
1501 | if (ret < 0) { |
1502 | return ret; | |
1503 | } | |
1504 | ||
1505 | if (ret & BDRV_BLOCK_ZERO) { | |
1506 | s->status = BLK_ZERO; | |
1507 | } else if (ret & BDRV_BLOCK_DATA) { | |
1508 | s->status = BLK_DATA; | |
1509 | } else if (!s->target_has_backing) { | |
1510 | /* Without a target backing file we must copy over the contents of | |
1511 | * the backing file as well. */ | |
263a6f4c | 1512 | /* Check block status of the backing file chain to avoid |
690c7301 KW |
1513 | * needlessly reading zeroes and limiting the iteration to the |
1514 | * buffer size */ | |
263a6f4c RK |
1515 | ret = bdrv_get_block_status_above(blk_bs(s->src[s->src_cur]), NULL, |
1516 | sector_num - s->src_cur_offset, | |
1517 | n, &n, &file); | |
1518 | if (ret < 0) { | |
1519 | return ret; | |
1520 | } | |
1521 | ||
1522 | if (ret & BDRV_BLOCK_ZERO) { | |
1523 | s->status = BLK_ZERO; | |
1524 | } else { | |
1525 | s->status = BLK_DATA; | |
1526 | } | |
690c7301 KW |
1527 | } else { |
1528 | s->status = BLK_BACKING_FILE; | |
1529 | } | |
1530 | ||
1531 | s->sector_next_status = sector_num + n; | |
1532 | } | |
1533 | ||
1534 | n = MIN(n, s->sector_next_status - sector_num); | |
1535 | if (s->status == BLK_DATA) { | |
1536 | n = MIN(n, s->buf_sectors); | |
1537 | } | |
1538 | ||
1539 | /* We need to write complete clusters for compressed images, so if an | |
1540 | * unallocated area is shorter than that, we must consider the whole | |
1541 | * cluster allocated. */ | |
1542 | if (s->compressed) { | |
1543 | if (n < s->cluster_sectors) { | |
1544 | n = MIN(s->cluster_sectors, s->total_sectors - sector_num); | |
1545 | s->status = BLK_DATA; | |
1546 | } else { | |
1547 | n = QEMU_ALIGN_DOWN(n, s->cluster_sectors); | |
1548 | } | |
1549 | } | |
1550 | ||
1551 | return n; | |
1552 | } | |
1553 | ||
1554 | static int convert_read(ImgConvertState *s, int64_t sector_num, int nb_sectors, | |
1555 | uint8_t *buf) | |
1556 | { | |
1557 | int n; | |
1558 | int ret; | |
1559 | ||
690c7301 KW |
1560 | assert(nb_sectors <= s->buf_sectors); |
1561 | while (nb_sectors > 0) { | |
1562 | BlockBackend *blk; | |
1563 | int64_t bs_sectors; | |
1564 | ||
1565 | /* In the case of compression with multiple source files, we can get a | |
1566 | * nb_sectors that spreads into the next part. So we must be able to | |
1567 | * read across multiple BDSes for one convert_read() call. */ | |
1568 | convert_select_part(s, sector_num); | |
1569 | blk = s->src[s->src_cur]; | |
1570 | bs_sectors = s->src_sectors[s->src_cur]; | |
1571 | ||
1572 | n = MIN(nb_sectors, bs_sectors - (sector_num - s->src_cur_offset)); | |
9166920a EB |
1573 | ret = blk_pread(blk, |
1574 | (sector_num - s->src_cur_offset) << BDRV_SECTOR_BITS, | |
1575 | buf, n << BDRV_SECTOR_BITS); | |
690c7301 KW |
1576 | if (ret < 0) { |
1577 | return ret; | |
1578 | } | |
1579 | ||
1580 | sector_num += n; | |
1581 | nb_sectors -= n; | |
1582 | buf += n * BDRV_SECTOR_SIZE; | |
1583 | } | |
1584 | ||
1585 | return 0; | |
1586 | } | |
1587 | ||
1588 | static int convert_write(ImgConvertState *s, int64_t sector_num, int nb_sectors, | |
1589 | const uint8_t *buf) | |
1590 | { | |
1591 | int ret; | |
1592 | ||
1593 | while (nb_sectors > 0) { | |
1594 | int n = nb_sectors; | |
1595 | ||
1596 | switch (s->status) { | |
1597 | case BLK_BACKING_FILE: | |
1598 | /* If we have a backing file, leave clusters unallocated that are | |
1599 | * unallocated in the source image, so that the backing file is | |
1600 | * visible at the respective offset. */ | |
1601 | assert(s->target_has_backing); | |
1602 | break; | |
1603 | ||
1604 | case BLK_DATA: | |
1605 | /* We must always write compressed clusters as a whole, so don't | |
1606 | * try to find zeroed parts in the buffer. We can only save the | |
1607 | * write if the buffer is completely zeroed and we're allowed to | |
1608 | * keep the target sparse. */ | |
1609 | if (s->compressed) { | |
1610 | if (s->has_zero_init && s->min_sparse && | |
1611 | buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) | |
1612 | { | |
1613 | assert(!s->target_has_backing); | |
1614 | break; | |
1615 | } | |
1616 | ||
fe5c1355 PB |
1617 | ret = blk_pwrite_compressed(s->target, |
1618 | sector_num << BDRV_SECTOR_BITS, | |
1619 | buf, n << BDRV_SECTOR_BITS); | |
690c7301 KW |
1620 | if (ret < 0) { |
1621 | return ret; | |
1622 | } | |
1623 | break; | |
1624 | } | |
1625 | ||
1626 | /* If there is real non-zero data or we're told to keep the target | |
1627 | * fully allocated (-S 0), we must write it. Otherwise we can treat | |
1628 | * it as zero sectors. */ | |
1629 | if (!s->min_sparse || | |
1630 | is_allocated_sectors_min(buf, n, &n, s->min_sparse)) | |
1631 | { | |
9166920a EB |
1632 | ret = blk_pwrite(s->target, sector_num << BDRV_SECTOR_BITS, |
1633 | buf, n << BDRV_SECTOR_BITS, 0); | |
690c7301 KW |
1634 | if (ret < 0) { |
1635 | return ret; | |
1636 | } | |
1637 | break; | |
1638 | } | |
1639 | /* fall-through */ | |
1640 | ||
1641 | case BLK_ZERO: | |
1642 | if (s->has_zero_init) { | |
1643 | break; | |
1644 | } | |
d004bd52 EB |
1645 | ret = blk_pwrite_zeroes(s->target, sector_num << BDRV_SECTOR_BITS, |
1646 | n << BDRV_SECTOR_BITS, 0); | |
690c7301 KW |
1647 | if (ret < 0) { |
1648 | return ret; | |
1649 | } | |
1650 | break; | |
1651 | } | |
1652 | ||
1653 | sector_num += n; | |
1654 | nb_sectors -= n; | |
1655 | buf += n * BDRV_SECTOR_SIZE; | |
1656 | } | |
1657 | ||
1658 | return 0; | |
1659 | } | |
1660 | ||
1661 | static int convert_do_copy(ImgConvertState *s) | |
1662 | { | |
1663 | uint8_t *buf = NULL; | |
1664 | int64_t sector_num, allocated_done; | |
1665 | int ret; | |
1666 | int n; | |
1667 | ||
1668 | /* Check whether we have zero initialisation or can get it efficiently */ | |
1669 | s->has_zero_init = s->min_sparse && !s->target_has_backing | |
1670 | ? bdrv_has_zero_init(blk_bs(s->target)) | |
1671 | : false; | |
1672 | ||
1673 | if (!s->has_zero_init && !s->target_has_backing && | |
1674 | bdrv_can_write_zeroes_with_unmap(blk_bs(s->target))) | |
1675 | { | |
720ff280 | 1676 | ret = blk_make_zero(s->target, BDRV_REQ_MAY_UNMAP); |
690c7301 KW |
1677 | if (ret == 0) { |
1678 | s->has_zero_init = true; | |
1679 | } | |
1680 | } | |
1681 | ||
1682 | /* Allocate buffer for copied data. For compressed images, only one cluster | |
1683 | * can be copied at a time. */ | |
1684 | if (s->compressed) { | |
1685 | if (s->cluster_sectors <= 0 || s->cluster_sectors > s->buf_sectors) { | |
1686 | error_report("invalid cluster size"); | |
1687 | ret = -EINVAL; | |
1688 | goto fail; | |
1689 | } | |
1690 | s->buf_sectors = s->cluster_sectors; | |
1691 | } | |
1692 | buf = blk_blockalign(s->target, s->buf_sectors * BDRV_SECTOR_SIZE); | |
1693 | ||
1694 | /* Calculate allocated sectors for progress */ | |
1695 | s->allocated_sectors = 0; | |
1696 | sector_num = 0; | |
1697 | while (sector_num < s->total_sectors) { | |
1698 | n = convert_iteration_sectors(s, sector_num); | |
1699 | if (n < 0) { | |
1700 | ret = n; | |
1701 | goto fail; | |
1702 | } | |
aad15de4 HR |
1703 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
1704 | { | |
690c7301 KW |
1705 | s->allocated_sectors += n; |
1706 | } | |
1707 | sector_num += n; | |
1708 | } | |
1709 | ||
1710 | /* Do the copy */ | |
1711 | s->src_cur = 0; | |
1712 | s->src_cur_offset = 0; | |
1713 | s->sector_next_status = 0; | |
1714 | ||
1715 | sector_num = 0; | |
1716 | allocated_done = 0; | |
1717 | ||
1718 | while (sector_num < s->total_sectors) { | |
1719 | n = convert_iteration_sectors(s, sector_num); | |
1720 | if (n < 0) { | |
1721 | ret = n; | |
1722 | goto fail; | |
1723 | } | |
aad15de4 HR |
1724 | if (s->status == BLK_DATA || (!s->min_sparse && s->status == BLK_ZERO)) |
1725 | { | |
690c7301 KW |
1726 | allocated_done += n; |
1727 | qemu_progress_print(100.0 * allocated_done / s->allocated_sectors, | |
1728 | 0); | |
1729 | } | |
1730 | ||
aad15de4 HR |
1731 | if (s->status == BLK_DATA) { |
1732 | ret = convert_read(s, sector_num, n, buf); | |
1733 | if (ret < 0) { | |
1734 | error_report("error while reading sector %" PRId64 | |
1735 | ": %s", sector_num, strerror(-ret)); | |
1736 | goto fail; | |
1737 | } | |
1738 | } else if (!s->min_sparse && s->status == BLK_ZERO) { | |
1739 | n = MIN(n, s->buf_sectors); | |
1740 | memset(buf, 0, n * BDRV_SECTOR_SIZE); | |
1741 | s->status = BLK_DATA; | |
690c7301 KW |
1742 | } |
1743 | ||
1744 | ret = convert_write(s, sector_num, n, buf); | |
1745 | if (ret < 0) { | |
1746 | error_report("error while writing sector %" PRId64 | |
1747 | ": %s", sector_num, strerror(-ret)); | |
1748 | goto fail; | |
1749 | } | |
1750 | ||
1751 | sector_num += n; | |
1752 | } | |
1753 | ||
1754 | if (s->compressed) { | |
1755 | /* signal EOF to align */ | |
fe5c1355 | 1756 | ret = blk_pwrite_compressed(s->target, 0, NULL, 0); |
690c7301 KW |
1757 | if (ret < 0) { |
1758 | goto fail; | |
1759 | } | |
1760 | } | |
1761 | ||
1762 | ret = 0; | |
1763 | fail: | |
1764 | qemu_vfree(buf); | |
1765 | return ret; | |
1766 | } | |
1767 | ||
ea2384d3 FB |
1768 | static int img_convert(int argc, char **argv) |
1769 | { | |
690c7301 | 1770 | int c, bs_n, bs_i, compress, cluster_sectors, skip_create; |
13c28af8 | 1771 | int64_t ret = 0; |
40055951 | 1772 | int progress = 0, flags, src_flags; |
ce099547 | 1773 | bool writethrough, src_writethrough; |
40055951 | 1774 | const char *fmt, *out_fmt, *cache, *src_cache, *out_baseimg, *out_filename; |
b50cbabc | 1775 | BlockDriver *drv, *proto_drv; |
26f54e9a | 1776 | BlockBackend **blk = NULL, *out_blk = NULL; |
c2abccec | 1777 | BlockDriverState **bs = NULL, *out_bs = NULL; |
690c7301 | 1778 | int64_t total_sectors; |
52bf1e72 | 1779 | int64_t *bs_sectors = NULL; |
f2521c90 | 1780 | size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE; |
faea38e7 | 1781 | BlockDriverInfo bdi; |
83d0521a CL |
1782 | QemuOpts *opts = NULL; |
1783 | QemuOptsList *create_opts = NULL; | |
1784 | const char *out_baseimg_param; | |
efa84d43 | 1785 | char *options = NULL; |
51ef6727 | 1786 | const char *snapshot_name = NULL; |
a22f123c | 1787 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
f382d43a | 1788 | bool quiet = false; |
cc84d90f | 1789 | Error *local_err = NULL; |
ef80654d | 1790 | QemuOpts *sn_opts = NULL; |
690c7301 | 1791 | ImgConvertState state; |
eb769f74 | 1792 | bool image_opts = false; |
ea2384d3 FB |
1793 | |
1794 | fmt = NULL; | |
1795 | out_fmt = "raw"; | |
661a0f71 | 1796 | cache = "unsafe"; |
40055951 | 1797 | src_cache = BDRV_DEFAULT_CACHE; |
f58c7b35 | 1798 | out_baseimg = NULL; |
eec77d9e | 1799 | compress = 0; |
b2e10493 | 1800 | skip_create = 0; |
ea2384d3 | 1801 | for(;;) { |
3babeb15 DB |
1802 | static const struct option long_options[] = { |
1803 | {"help", no_argument, 0, 'h'}, | |
1804 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 1805 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
1806 | {0, 0, 0, 0} |
1807 | }; | |
1808 | c = getopt_long(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn", | |
1809 | long_options, NULL); | |
b8fb60da | 1810 | if (c == -1) { |
ea2384d3 | 1811 | break; |
b8fb60da | 1812 | } |
ea2384d3 | 1813 | switch(c) { |
ef87394c | 1814 | case '?': |
ea2384d3 FB |
1815 | case 'h': |
1816 | help(); | |
1817 | break; | |
1818 | case 'f': | |
1819 | fmt = optarg; | |
1820 | break; | |
1821 | case 'O': | |
1822 | out_fmt = optarg; | |
1823 | break; | |
f58c7b35 TS |
1824 | case 'B': |
1825 | out_baseimg = optarg; | |
1826 | break; | |
ea2384d3 | 1827 | case 'c': |
eec77d9e | 1828 | compress = 1; |
ea2384d3 FB |
1829 | break; |
1830 | case 'e': | |
9d42e15d | 1831 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 1832 | "encryption\' instead!"); |
2dc8328b | 1833 | ret = -1; |
64bb01aa | 1834 | goto fail_getopt; |
ec36ba14 | 1835 | case '6': |
9d42e15d | 1836 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 1837 | "compat6\' instead!"); |
2dc8328b | 1838 | ret = -1; |
64bb01aa | 1839 | goto fail_getopt; |
efa84d43 | 1840 | case 'o': |
2dc8328b KW |
1841 | if (!is_valid_option_list(optarg)) { |
1842 | error_report("Invalid option list: %s", optarg); | |
1843 | ret = -1; | |
64bb01aa | 1844 | goto fail_getopt; |
2dc8328b KW |
1845 | } |
1846 | if (!options) { | |
1847 | options = g_strdup(optarg); | |
1848 | } else { | |
1849 | char *old_options = options; | |
1850 | options = g_strdup_printf("%s,%s", options, optarg); | |
1851 | g_free(old_options); | |
1852 | } | |
efa84d43 | 1853 | break; |
51ef6727 | 1854 | case 's': |
1855 | snapshot_name = optarg; | |
1856 | break; | |
ef80654d WX |
1857 | case 'l': |
1858 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
70b94331 MA |
1859 | sn_opts = qemu_opts_parse_noisily(&internal_snapshot_opts, |
1860 | optarg, false); | |
ef80654d WX |
1861 | if (!sn_opts) { |
1862 | error_report("Failed in parsing snapshot param '%s'", | |
1863 | optarg); | |
2dc8328b | 1864 | ret = -1; |
64bb01aa | 1865 | goto fail_getopt; |
ef80654d WX |
1866 | } |
1867 | } else { | |
1868 | snapshot_name = optarg; | |
1869 | } | |
1870 | break; | |
a22f123c KW |
1871 | case 'S': |
1872 | { | |
1873 | int64_t sval; | |
606caa0a MA |
1874 | |
1875 | sval = cvtnum(optarg); | |
1876 | if (sval < 0) { | |
a22f123c | 1877 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
2dc8328b | 1878 | ret = -1; |
64bb01aa | 1879 | goto fail_getopt; |
a22f123c KW |
1880 | } |
1881 | ||
1882 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
1883 | break; | |
1884 | } | |
6b837bc4 JS |
1885 | case 'p': |
1886 | progress = 1; | |
1887 | break; | |
661a0f71 FS |
1888 | case 't': |
1889 | cache = optarg; | |
1890 | break; | |
40055951 HR |
1891 | case 'T': |
1892 | src_cache = optarg; | |
1893 | break; | |
f382d43a MR |
1894 | case 'q': |
1895 | quiet = true; | |
1896 | break; | |
b2e10493 AD |
1897 | case 'n': |
1898 | skip_create = 1; | |
1899 | break; | |
3babeb15 DB |
1900 | case OPTION_OBJECT: |
1901 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
1902 | optarg, true); | |
1903 | if (!opts) { | |
1904 | goto fail_getopt; | |
1905 | } | |
1906 | break; | |
eb769f74 DB |
1907 | case OPTION_IMAGE_OPTS: |
1908 | image_opts = true; | |
1909 | break; | |
ea2384d3 FB |
1910 | } |
1911 | } | |
3b46e624 | 1912 | |
3babeb15 DB |
1913 | if (qemu_opts_foreach(&qemu_object_opts, |
1914 | user_creatable_add_opts_foreach, | |
51b9b478 | 1915 | NULL, NULL)) { |
3babeb15 DB |
1916 | goto fail_getopt; |
1917 | } | |
1918 | ||
64bb01aa | 1919 | /* Initialize before goto out */ |
f382d43a MR |
1920 | if (quiet) { |
1921 | progress = 0; | |
1922 | } | |
64bb01aa KW |
1923 | qemu_progress_init(progress, 1.0); |
1924 | ||
926c2d23 | 1925 | bs_n = argc - optind - 1; |
a283cb6e | 1926 | out_filename = bs_n >= 1 ? argv[argc - 1] : NULL; |
f58c7b35 | 1927 | |
2dc8328b | 1928 | if (options && has_help_option(options)) { |
4ac8aacd JS |
1929 | ret = print_block_option_help(out_filename, out_fmt); |
1930 | goto out; | |
1931 | } | |
1932 | ||
a283cb6e | 1933 | if (bs_n < 1) { |
ac1307ab | 1934 | error_exit("Must specify image file name"); |
a283cb6e KW |
1935 | } |
1936 | ||
1937 | ||
c2abccec | 1938 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
1939 | error_report("-B makes no sense when concatenating multiple input " |
1940 | "images"); | |
31ca34b8 JS |
1941 | ret = -1; |
1942 | goto out; | |
c2abccec | 1943 | } |
f8111c24 | 1944 | |
ce099547 KW |
1945 | src_flags = 0; |
1946 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
1947 | if (ret < 0) { |
1948 | error_report("Invalid source cache option: %s", src_cache); | |
1949 | goto out; | |
1950 | } | |
1951 | ||
6b837bc4 JS |
1952 | qemu_progress_print(0, 100); |
1953 | ||
26f54e9a | 1954 | blk = g_new0(BlockBackend *, bs_n); |
d739f1c4 | 1955 | bs = g_new0(BlockDriverState *, bs_n); |
52bf1e72 | 1956 | bs_sectors = g_new(int64_t, bs_n); |
926c2d23 AZ |
1957 | |
1958 | total_sectors = 0; | |
1959 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
efaa7c4e | 1960 | blk[bs_i] = img_open(image_opts, argv[optind + bs_i], |
ce099547 | 1961 | fmt, src_flags, src_writethrough, quiet); |
7e7d56d9 | 1962 | if (!blk[bs_i]) { |
c2abccec MK |
1963 | ret = -1; |
1964 | goto out; | |
1965 | } | |
7e7d56d9 | 1966 | bs[bs_i] = blk_bs(blk[bs_i]); |
f1d3cd79 | 1967 | bs_sectors[bs_i] = blk_nb_sectors(blk[bs_i]); |
52bf1e72 MA |
1968 | if (bs_sectors[bs_i] < 0) { |
1969 | error_report("Could not get size of %s: %s", | |
1970 | argv[optind + bs_i], strerror(-bs_sectors[bs_i])); | |
1971 | ret = -1; | |
1972 | goto out; | |
1973 | } | |
d739f1c4 | 1974 | total_sectors += bs_sectors[bs_i]; |
926c2d23 | 1975 | } |
ea2384d3 | 1976 | |
ef80654d | 1977 | if (sn_opts) { |
10d6eda1 PM |
1978 | bdrv_snapshot_load_tmp(bs[0], |
1979 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
1980 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
1981 | &local_err); | |
ef80654d | 1982 | } else if (snapshot_name != NULL) { |
51ef6727 | 1983 | if (bs_n > 1) { |
6daf194d | 1984 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 1985 | ret = -1; |
1986 | goto out; | |
1987 | } | |
7b4c4781 WX |
1988 | |
1989 | bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err); | |
ef80654d | 1990 | } |
84d18f06 | 1991 | if (local_err) { |
c29b77f9 | 1992 | error_reportf_err(local_err, "Failed to load snapshot: "); |
ef80654d WX |
1993 | ret = -1; |
1994 | goto out; | |
51ef6727 | 1995 | } |
1996 | ||
efa84d43 | 1997 | /* Find driver and parse its options */ |
ea2384d3 | 1998 | drv = bdrv_find_format(out_fmt); |
c2abccec | 1999 | if (!drv) { |
15654a6d | 2000 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
2001 | ret = -1; |
2002 | goto out; | |
2003 | } | |
efa84d43 | 2004 | |
b65a5e12 | 2005 | proto_drv = bdrv_find_protocol(out_filename, true, &local_err); |
c2abccec | 2006 | if (!proto_drv) { |
2867ce4a | 2007 | error_report_err(local_err); |
c2abccec MK |
2008 | ret = -1; |
2009 | goto out; | |
2010 | } | |
b50cbabc | 2011 | |
2e024cde HR |
2012 | if (!skip_create) { |
2013 | if (!drv->create_opts) { | |
2014 | error_report("Format driver '%s' does not support image creation", | |
2015 | drv->format_name); | |
2016 | ret = -1; | |
2017 | goto out; | |
2018 | } | |
f75613cf | 2019 | |
2e024cde HR |
2020 | if (!proto_drv->create_opts) { |
2021 | error_report("Protocol driver '%s' does not support image creation", | |
2022 | proto_drv->format_name); | |
2023 | ret = -1; | |
2024 | goto out; | |
2025 | } | |
f75613cf | 2026 | |
2e024cde HR |
2027 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
2028 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 2029 | |
2e024cde | 2030 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
dc523cd3 MA |
2031 | if (options) { |
2032 | qemu_opts_do_parse(opts, options, NULL, &local_err); | |
2033 | if (local_err) { | |
97a2ca7a | 2034 | error_report_err(local_err); |
dc523cd3 MA |
2035 | ret = -1; |
2036 | goto out; | |
2037 | } | |
2e024cde | 2038 | } |
efa84d43 | 2039 | |
39101f25 MA |
2040 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512, |
2041 | &error_abort); | |
2e024cde HR |
2042 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); |
2043 | if (ret < 0) { | |
2044 | goto out; | |
2045 | } | |
c2abccec | 2046 | } |
efa84d43 | 2047 | |
a18953fb | 2048 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 2049 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 2050 | if (out_baseimg_param) { |
83d0521a | 2051 | out_baseimg = out_baseimg_param; |
a18953fb KW |
2052 | } |
2053 | ||
efa84d43 | 2054 | /* Check if compression is supported */ |
eec77d9e | 2055 | if (compress) { |
83d0521a CL |
2056 | bool encryption = |
2057 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
2058 | const char *preallocation = | |
2059 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 | 2060 | |
35fadca8 | 2061 | if (!drv->bdrv_co_pwritev_compressed) { |
15654a6d | 2062 | error_report("Compression not supported for this file format"); |
c2abccec MK |
2063 | ret = -1; |
2064 | goto out; | |
efa84d43 KW |
2065 | } |
2066 | ||
83d0521a | 2067 | if (encryption) { |
15654a6d JS |
2068 | error_report("Compression and encryption not supported at " |
2069 | "the same time"); | |
c2abccec MK |
2070 | ret = -1; |
2071 | goto out; | |
efa84d43 | 2072 | } |
41521fa4 | 2073 | |
83d0521a CL |
2074 | if (preallocation |
2075 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
2076 | { |
2077 | error_report("Compression and preallocation not supported at " | |
2078 | "the same time"); | |
2079 | ret = -1; | |
2080 | goto out; | |
2081 | } | |
efa84d43 KW |
2082 | } |
2083 | ||
b2e10493 AD |
2084 | if (!skip_create) { |
2085 | /* Create the new image */ | |
c282e1fd | 2086 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 2087 | if (ret < 0) { |
c29b77f9 MA |
2088 | error_reportf_err(local_err, "%s: error while converting %s: ", |
2089 | out_filename, out_fmt); | |
b2e10493 | 2090 | goto out; |
ea2384d3 FB |
2091 | } |
2092 | } | |
3b46e624 | 2093 | |
5a37b60a | 2094 | flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
ce099547 | 2095 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2096 | if (ret < 0) { |
2097 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 2098 | goto out; |
661a0f71 FS |
2099 | } |
2100 | ||
eb769f74 DB |
2101 | /* XXX we should allow --image-opts to trigger use of |
2102 | * img_open() here, but then we have trouble with | |
2103 | * the bdrv_create() call which takes different params. | |
2104 | * Not critical right now, so fix can wait... | |
2105 | */ | |
ce099547 | 2106 | out_blk = img_open_file(out_filename, out_fmt, flags, writethrough, quiet); |
7e7d56d9 | 2107 | if (!out_blk) { |
c2abccec MK |
2108 | ret = -1; |
2109 | goto out; | |
2110 | } | |
7e7d56d9 | 2111 | out_bs = blk_bs(out_blk); |
ea2384d3 | 2112 | |
5def6b80 | 2113 | /* increase bufsectors from the default 4096 (2M) if opt_transfer |
f2521c90 PL |
2114 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) |
2115 | * as maximum. */ | |
2116 | bufsectors = MIN(32768, | |
5def6b80 EB |
2117 | MAX(bufsectors, |
2118 | MAX(out_bs->bl.opt_transfer >> BDRV_SECTOR_BITS, | |
b9f7855a EB |
2119 | out_bs->bl.pdiscard_alignment >> |
2120 | BDRV_SECTOR_BITS))); | |
f2521c90 | 2121 | |
b2e10493 | 2122 | if (skip_create) { |
f1d3cd79 | 2123 | int64_t output_sectors = blk_nb_sectors(out_blk); |
43716fa8 | 2124 | if (output_sectors < 0) { |
eec5eb42 | 2125 | error_report("unable to get output image length: %s", |
43716fa8 | 2126 | strerror(-output_sectors)); |
b2e10493 AD |
2127 | ret = -1; |
2128 | goto out; | |
43716fa8 | 2129 | } else if (output_sectors < total_sectors) { |
b2e10493 AD |
2130 | error_report("output file is smaller than input file"); |
2131 | ret = -1; | |
2132 | goto out; | |
2133 | } | |
2134 | } | |
2135 | ||
24f833cd PL |
2136 | cluster_sectors = 0; |
2137 | ret = bdrv_get_info(out_bs, &bdi); | |
2138 | if (ret < 0) { | |
2139 | if (compress) { | |
15654a6d | 2140 | error_report("could not get block driver info"); |
c2abccec MK |
2141 | goto out; |
2142 | } | |
24f833cd | 2143 | } else { |
85f49cad | 2144 | compress = compress || bdi.needs_compressed_writes; |
24f833cd PL |
2145 | cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; |
2146 | } | |
2147 | ||
690c7301 KW |
2148 | state = (ImgConvertState) { |
2149 | .src = blk, | |
2150 | .src_sectors = bs_sectors, | |
2151 | .src_num = bs_n, | |
2152 | .total_sectors = total_sectors, | |
2153 | .target = out_blk, | |
2154 | .compressed = compress, | |
2155 | .target_has_backing = (bool) out_baseimg, | |
2156 | .min_sparse = min_sparse, | |
2157 | .cluster_sectors = cluster_sectors, | |
2158 | .buf_sectors = bufsectors, | |
2159 | }; | |
2160 | ret = convert_do_copy(&state); | |
802c3d4c | 2161 | |
c2abccec | 2162 | out: |
13c28af8 PL |
2163 | if (!ret) { |
2164 | qemu_progress_print(100, 0); | |
2165 | } | |
6b837bc4 | 2166 | qemu_progress_end(); |
83d0521a CL |
2167 | qemu_opts_del(opts); |
2168 | qemu_opts_free(create_opts); | |
fbf28a43 | 2169 | qemu_opts_del(sn_opts); |
26f54e9a | 2170 | blk_unref(out_blk); |
9ba10c95 | 2171 | g_free(bs); |
26f54e9a MA |
2172 | if (blk) { |
2173 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
2174 | blk_unref(blk[bs_i]); | |
2175 | } | |
2176 | g_free(blk); | |
2177 | } | |
d739f1c4 | 2178 | g_free(bs_sectors); |
64bb01aa KW |
2179 | fail_getopt: |
2180 | g_free(options); | |
2181 | ||
c2abccec MK |
2182 | if (ret) { |
2183 | return 1; | |
2184 | } | |
ea2384d3 FB |
2185 | return 0; |
2186 | } | |
2187 | ||
57d1a2b6 | 2188 | |
faea38e7 FB |
2189 | static void dump_snapshots(BlockDriverState *bs) |
2190 | { | |
2191 | QEMUSnapshotInfo *sn_tab, *sn; | |
2192 | int nb_sns, i; | |
faea38e7 FB |
2193 | |
2194 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
2195 | if (nb_sns <= 0) | |
2196 | return; | |
2197 | printf("Snapshot list:\n"); | |
5b917044 WX |
2198 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
2199 | printf("\n"); | |
faea38e7 FB |
2200 | for(i = 0; i < nb_sns; i++) { |
2201 | sn = &sn_tab[i]; | |
5b917044 WX |
2202 | bdrv_snapshot_dump(fprintf, stdout, sn); |
2203 | printf("\n"); | |
faea38e7 | 2204 | } |
7267c094 | 2205 | g_free(sn_tab); |
faea38e7 FB |
2206 | } |
2207 | ||
9699bf0d SH |
2208 | static void dump_json_image_info_list(ImageInfoList *list) |
2209 | { | |
9699bf0d | 2210 | QString *str; |
9699bf0d | 2211 | QObject *obj; |
7d5e199a | 2212 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
2213 | |
2214 | visit_type_ImageInfoList(v, NULL, &list, &error_abort); | |
2215 | visit_complete(v, &obj); | |
9699bf0d SH |
2216 | str = qobject_to_json_pretty(obj); |
2217 | assert(str != NULL); | |
2218 | printf("%s\n", qstring_get_str(str)); | |
2219 | qobject_decref(obj); | |
3b098d56 | 2220 | visit_free(v); |
9699bf0d SH |
2221 | QDECREF(str); |
2222 | } | |
2223 | ||
c054b3fd BC |
2224 | static void dump_json_image_info(ImageInfo *info) |
2225 | { | |
c054b3fd | 2226 | QString *str; |
c054b3fd | 2227 | QObject *obj; |
7d5e199a | 2228 | Visitor *v = qobject_output_visitor_new(&obj); |
3b098d56 EB |
2229 | |
2230 | visit_type_ImageInfo(v, NULL, &info, &error_abort); | |
2231 | visit_complete(v, &obj); | |
c054b3fd BC |
2232 | str = qobject_to_json_pretty(obj); |
2233 | assert(str != NULL); | |
2234 | printf("%s\n", qstring_get_str(str)); | |
2235 | qobject_decref(obj); | |
3b098d56 | 2236 | visit_free(v); |
c054b3fd BC |
2237 | QDECREF(str); |
2238 | } | |
2239 | ||
9699bf0d SH |
2240 | static void dump_human_image_info_list(ImageInfoList *list) |
2241 | { | |
2242 | ImageInfoList *elem; | |
2243 | bool delim = false; | |
2244 | ||
2245 | for (elem = list; elem; elem = elem->next) { | |
2246 | if (delim) { | |
2247 | printf("\n"); | |
2248 | } | |
2249 | delim = true; | |
2250 | ||
5b917044 | 2251 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
2252 | } |
2253 | } | |
2254 | ||
2255 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
2256 | { | |
2257 | return strcmp(a, b) == 0; | |
2258 | } | |
2259 | ||
2260 | /** | |
2261 | * Open an image file chain and return an ImageInfoList | |
2262 | * | |
2263 | * @filename: topmost image filename | |
2264 | * @fmt: topmost image format (may be NULL to autodetect) | |
2265 | * @chain: true - enumerate entire backing file chain | |
2266 | * false - only topmost image file | |
2267 | * | |
2268 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
2269 | * image file. If there was an error a message will have been printed to | |
2270 | * stderr. | |
2271 | */ | |
eb769f74 DB |
2272 | static ImageInfoList *collect_image_info_list(bool image_opts, |
2273 | const char *filename, | |
9699bf0d SH |
2274 | const char *fmt, |
2275 | bool chain) | |
2276 | { | |
2277 | ImageInfoList *head = NULL; | |
2278 | ImageInfoList **last = &head; | |
2279 | GHashTable *filenames; | |
43526ec8 | 2280 | Error *err = NULL; |
9699bf0d SH |
2281 | |
2282 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
2283 | ||
2284 | while (filename) { | |
26f54e9a | 2285 | BlockBackend *blk; |
9699bf0d SH |
2286 | BlockDriverState *bs; |
2287 | ImageInfo *info; | |
2288 | ImageInfoList *elem; | |
2289 | ||
2290 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
2291 | error_report("Backing file '%s' creates an infinite loop.", | |
2292 | filename); | |
2293 | goto err; | |
2294 | } | |
2295 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
2296 | ||
efaa7c4e | 2297 | blk = img_open(image_opts, filename, fmt, |
ce099547 | 2298 | BDRV_O_NO_BACKING | BDRV_O_NO_IO, false, false); |
7e7d56d9 | 2299 | if (!blk) { |
9699bf0d SH |
2300 | goto err; |
2301 | } | |
7e7d56d9 | 2302 | bs = blk_bs(blk); |
9699bf0d | 2303 | |
43526ec8 | 2304 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 2305 | if (err) { |
565f65d2 | 2306 | error_report_err(err); |
26f54e9a | 2307 | blk_unref(blk); |
43526ec8 | 2308 | goto err; |
fb0ed453 | 2309 | } |
9699bf0d SH |
2310 | |
2311 | elem = g_new0(ImageInfoList, 1); | |
2312 | elem->value = info; | |
2313 | *last = elem; | |
2314 | last = &elem->next; | |
2315 | ||
26f54e9a | 2316 | blk_unref(blk); |
9699bf0d SH |
2317 | |
2318 | filename = fmt = NULL; | |
2319 | if (chain) { | |
2320 | if (info->has_full_backing_filename) { | |
2321 | filename = info->full_backing_filename; | |
2322 | } else if (info->has_backing_filename) { | |
92d617ab JS |
2323 | error_report("Could not determine absolute backing filename," |
2324 | " but backing filename '%s' present", | |
2325 | info->backing_filename); | |
2326 | goto err; | |
9699bf0d SH |
2327 | } |
2328 | if (info->has_backing_filename_format) { | |
2329 | fmt = info->backing_filename_format; | |
2330 | } | |
2331 | } | |
2332 | } | |
2333 | g_hash_table_destroy(filenames); | |
2334 | return head; | |
2335 | ||
2336 | err: | |
2337 | qapi_free_ImageInfoList(head); | |
2338 | g_hash_table_destroy(filenames); | |
2339 | return NULL; | |
2340 | } | |
2341 | ||
c054b3fd BC |
2342 | static int img_info(int argc, char **argv) |
2343 | { | |
2344 | int c; | |
2345 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 2346 | bool chain = false; |
c054b3fd | 2347 | const char *filename, *fmt, *output; |
9699bf0d | 2348 | ImageInfoList *list; |
eb769f74 | 2349 | bool image_opts = false; |
c054b3fd | 2350 | |
ea2384d3 | 2351 | fmt = NULL; |
c054b3fd | 2352 | output = NULL; |
ea2384d3 | 2353 | for(;;) { |
c054b3fd BC |
2354 | int option_index = 0; |
2355 | static const struct option long_options[] = { | |
2356 | {"help", no_argument, 0, 'h'}, | |
2357 | {"format", required_argument, 0, 'f'}, | |
2358 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 2359 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
3babeb15 | 2360 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2361 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
c054b3fd BC |
2362 | {0, 0, 0, 0} |
2363 | }; | |
2364 | c = getopt_long(argc, argv, "f:h", | |
2365 | long_options, &option_index); | |
b8fb60da | 2366 | if (c == -1) { |
ea2384d3 | 2367 | break; |
b8fb60da | 2368 | } |
ea2384d3 | 2369 | switch(c) { |
ef87394c | 2370 | case '?': |
ea2384d3 FB |
2371 | case 'h': |
2372 | help(); | |
2373 | break; | |
2374 | case 'f': | |
2375 | fmt = optarg; | |
2376 | break; | |
c054b3fd BC |
2377 | case OPTION_OUTPUT: |
2378 | output = optarg; | |
2379 | break; | |
9699bf0d SH |
2380 | case OPTION_BACKING_CHAIN: |
2381 | chain = true; | |
2382 | break; | |
3babeb15 DB |
2383 | case OPTION_OBJECT: { |
2384 | QemuOpts *opts; | |
2385 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2386 | optarg, true); | |
2387 | if (!opts) { | |
2388 | return 1; | |
2389 | } | |
2390 | } break; | |
eb769f74 DB |
2391 | case OPTION_IMAGE_OPTS: |
2392 | image_opts = true; | |
2393 | break; | |
ea2384d3 FB |
2394 | } |
2395 | } | |
fc11eb26 | 2396 | if (optind != argc - 1) { |
ac1307ab | 2397 | error_exit("Expecting one image file name"); |
b8fb60da | 2398 | } |
ea2384d3 FB |
2399 | filename = argv[optind++]; |
2400 | ||
c054b3fd BC |
2401 | if (output && !strcmp(output, "json")) { |
2402 | output_format = OFORMAT_JSON; | |
2403 | } else if (output && !strcmp(output, "human")) { | |
2404 | output_format = OFORMAT_HUMAN; | |
2405 | } else if (output) { | |
2406 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
2407 | return 1; |
2408 | } | |
c054b3fd | 2409 | |
3babeb15 DB |
2410 | if (qemu_opts_foreach(&qemu_object_opts, |
2411 | user_creatable_add_opts_foreach, | |
51b9b478 | 2412 | NULL, NULL)) { |
3babeb15 DB |
2413 | return 1; |
2414 | } | |
2415 | ||
eb769f74 | 2416 | list = collect_image_info_list(image_opts, filename, fmt, chain); |
9699bf0d | 2417 | if (!list) { |
c2abccec | 2418 | return 1; |
faea38e7 | 2419 | } |
c054b3fd | 2420 | |
c054b3fd BC |
2421 | switch (output_format) { |
2422 | case OFORMAT_HUMAN: | |
9699bf0d | 2423 | dump_human_image_info_list(list); |
c054b3fd BC |
2424 | break; |
2425 | case OFORMAT_JSON: | |
9699bf0d SH |
2426 | if (chain) { |
2427 | dump_json_image_info_list(list); | |
2428 | } else { | |
2429 | dump_json_image_info(list->value); | |
2430 | } | |
c054b3fd | 2431 | break; |
faea38e7 | 2432 | } |
c054b3fd | 2433 | |
9699bf0d | 2434 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2435 | return 0; |
2436 | } | |
2437 | ||
4c93a13b PB |
2438 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, |
2439 | MapEntry *next) | |
2440 | { | |
2441 | switch (output_format) { | |
2442 | case OFORMAT_HUMAN: | |
16b0d555 | 2443 | if (e->data && !e->has_offset) { |
4c93a13b PB |
2444 | error_report("File contains external, encrypted or compressed clusters."); |
2445 | exit(1); | |
2446 | } | |
16b0d555 | 2447 | if (e->data && !e->zero) { |
4c93a13b | 2448 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", |
16b0d555 FZ |
2449 | e->start, e->length, |
2450 | e->has_offset ? e->offset : 0, | |
2451 | e->has_filename ? e->filename : ""); | |
4c93a13b PB |
2452 | } |
2453 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2454 | * Modify the flags here to allow more coalescing. | |
2455 | */ | |
16b0d555 FZ |
2456 | if (next && (!next->data || next->zero)) { |
2457 | next->data = false; | |
2458 | next->zero = true; | |
4c93a13b PB |
2459 | } |
2460 | break; | |
2461 | case OFORMAT_JSON: | |
16b0d555 FZ |
2462 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64"," |
2463 | " \"depth\": %"PRId64", \"zero\": %s, \"data\": %s", | |
4c93a13b PB |
2464 | (e->start == 0 ? "[" : ",\n"), |
2465 | e->start, e->length, e->depth, | |
16b0d555 FZ |
2466 | e->zero ? "true" : "false", |
2467 | e->data ? "true" : "false"); | |
2468 | if (e->has_offset) { | |
c745bfb4 | 2469 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
2470 | } |
2471 | putchar('}'); | |
2472 | ||
2473 | if (!next) { | |
2474 | printf("]\n"); | |
2475 | } | |
2476 | break; | |
2477 | } | |
2478 | } | |
2479 | ||
2480 | static int get_block_status(BlockDriverState *bs, int64_t sector_num, | |
2481 | int nb_sectors, MapEntry *e) | |
2482 | { | |
2483 | int64_t ret; | |
2484 | int depth; | |
67a0fd2a | 2485 | BlockDriverState *file; |
2875645b | 2486 | bool has_offset; |
4c93a13b PB |
2487 | |
2488 | /* As an optimization, we could cache the current range of unallocated | |
2489 | * clusters in each file of the chain, and avoid querying the same | |
2490 | * range repeatedly. | |
2491 | */ | |
2492 | ||
2493 | depth = 0; | |
2494 | for (;;) { | |
67a0fd2a FZ |
2495 | ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors, |
2496 | &file); | |
4c93a13b PB |
2497 | if (ret < 0) { |
2498 | return ret; | |
2499 | } | |
2500 | assert(nb_sectors); | |
2501 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { | |
2502 | break; | |
2503 | } | |
760e0063 | 2504 | bs = backing_bs(bs); |
4c93a13b PB |
2505 | if (bs == NULL) { |
2506 | ret = 0; | |
2507 | break; | |
2508 | } | |
2509 | ||
2510 | depth++; | |
2511 | } | |
2512 | ||
2875645b JS |
2513 | has_offset = !!(ret & BDRV_BLOCK_OFFSET_VALID); |
2514 | ||
2515 | *e = (MapEntry) { | |
2516 | .start = sector_num * BDRV_SECTOR_SIZE, | |
2517 | .length = nb_sectors * BDRV_SECTOR_SIZE, | |
2518 | .data = !!(ret & BDRV_BLOCK_DATA), | |
2519 | .zero = !!(ret & BDRV_BLOCK_ZERO), | |
2520 | .offset = ret & BDRV_BLOCK_OFFSET_MASK, | |
2521 | .has_offset = has_offset, | |
2522 | .depth = depth, | |
2523 | .has_filename = file && has_offset, | |
2524 | .filename = file && has_offset ? file->filename : NULL, | |
2525 | }; | |
2526 | ||
4c93a13b PB |
2527 | return 0; |
2528 | } | |
2529 | ||
16b0d555 FZ |
2530 | static inline bool entry_mergeable(const MapEntry *curr, const MapEntry *next) |
2531 | { | |
2532 | if (curr->length == 0) { | |
2533 | return false; | |
2534 | } | |
2535 | if (curr->zero != next->zero || | |
2536 | curr->data != next->data || | |
2537 | curr->depth != next->depth || | |
2538 | curr->has_filename != next->has_filename || | |
2539 | curr->has_offset != next->has_offset) { | |
2540 | return false; | |
2541 | } | |
2542 | if (curr->has_filename && strcmp(curr->filename, next->filename)) { | |
2543 | return false; | |
2544 | } | |
2545 | if (curr->has_offset && curr->offset + curr->length != next->offset) { | |
2546 | return false; | |
2547 | } | |
2548 | return true; | |
2549 | } | |
2550 | ||
4c93a13b PB |
2551 | static int img_map(int argc, char **argv) |
2552 | { | |
2553 | int c; | |
2554 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 2555 | BlockBackend *blk; |
4c93a13b PB |
2556 | BlockDriverState *bs; |
2557 | const char *filename, *fmt, *output; | |
2558 | int64_t length; | |
2559 | MapEntry curr = { .length = 0 }, next; | |
2560 | int ret = 0; | |
eb769f74 | 2561 | bool image_opts = false; |
4c93a13b PB |
2562 | |
2563 | fmt = NULL; | |
2564 | output = NULL; | |
2565 | for (;;) { | |
2566 | int option_index = 0; | |
2567 | static const struct option long_options[] = { | |
2568 | {"help", no_argument, 0, 'h'}, | |
2569 | {"format", required_argument, 0, 'f'}, | |
2570 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
3babeb15 | 2571 | {"object", required_argument, 0, OPTION_OBJECT}, |
eb769f74 | 2572 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
4c93a13b PB |
2573 | {0, 0, 0, 0} |
2574 | }; | |
2575 | c = getopt_long(argc, argv, "f:h", | |
2576 | long_options, &option_index); | |
2577 | if (c == -1) { | |
2578 | break; | |
2579 | } | |
2580 | switch (c) { | |
2581 | case '?': | |
2582 | case 'h': | |
2583 | help(); | |
2584 | break; | |
2585 | case 'f': | |
2586 | fmt = optarg; | |
2587 | break; | |
2588 | case OPTION_OUTPUT: | |
2589 | output = optarg; | |
2590 | break; | |
3babeb15 DB |
2591 | case OPTION_OBJECT: { |
2592 | QemuOpts *opts; | |
2593 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2594 | optarg, true); | |
2595 | if (!opts) { | |
2596 | return 1; | |
2597 | } | |
2598 | } break; | |
eb769f74 DB |
2599 | case OPTION_IMAGE_OPTS: |
2600 | image_opts = true; | |
2601 | break; | |
4c93a13b PB |
2602 | } |
2603 | } | |
ac1307ab FZ |
2604 | if (optind != argc - 1) { |
2605 | error_exit("Expecting one image file name"); | |
4c93a13b | 2606 | } |
ac1307ab | 2607 | filename = argv[optind]; |
4c93a13b PB |
2608 | |
2609 | if (output && !strcmp(output, "json")) { | |
2610 | output_format = OFORMAT_JSON; | |
2611 | } else if (output && !strcmp(output, "human")) { | |
2612 | output_format = OFORMAT_HUMAN; | |
2613 | } else if (output) { | |
2614 | error_report("--output must be used with human or json as argument."); | |
2615 | return 1; | |
2616 | } | |
2617 | ||
3babeb15 DB |
2618 | if (qemu_opts_foreach(&qemu_object_opts, |
2619 | user_creatable_add_opts_foreach, | |
51b9b478 | 2620 | NULL, NULL)) { |
3babeb15 DB |
2621 | return 1; |
2622 | } | |
2623 | ||
ce099547 | 2624 | blk = img_open(image_opts, filename, fmt, 0, false, false); |
7e7d56d9 MA |
2625 | if (!blk) { |
2626 | return 1; | |
4c93a13b | 2627 | } |
7e7d56d9 | 2628 | bs = blk_bs(blk); |
4c93a13b PB |
2629 | |
2630 | if (output_format == OFORMAT_HUMAN) { | |
2631 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2632 | } | |
2633 | ||
f1d3cd79 | 2634 | length = blk_getlength(blk); |
4c93a13b PB |
2635 | while (curr.start + curr.length < length) { |
2636 | int64_t nsectors_left; | |
2637 | int64_t sector_num; | |
2638 | int n; | |
2639 | ||
2640 | sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; | |
2641 | ||
2642 | /* Probe up to 1 GiB at a time. */ | |
2643 | nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; | |
2644 | n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); | |
2645 | ret = get_block_status(bs, sector_num, n, &next); | |
2646 | ||
2647 | if (ret < 0) { | |
2648 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2649 | goto out; | |
2650 | } | |
2651 | ||
16b0d555 | 2652 | if (entry_mergeable(&curr, &next)) { |
4c93a13b PB |
2653 | curr.length += next.length; |
2654 | continue; | |
2655 | } | |
2656 | ||
2657 | if (curr.length > 0) { | |
2658 | dump_map_entry(output_format, &curr, &next); | |
2659 | } | |
2660 | curr = next; | |
2661 | } | |
2662 | ||
2663 | dump_map_entry(output_format, &curr, NULL); | |
2664 | ||
2665 | out: | |
26f54e9a | 2666 | blk_unref(blk); |
4c93a13b PB |
2667 | return ret < 0; |
2668 | } | |
2669 | ||
f7b4a940 AL |
2670 | #define SNAPSHOT_LIST 1 |
2671 | #define SNAPSHOT_CREATE 2 | |
2672 | #define SNAPSHOT_APPLY 3 | |
2673 | #define SNAPSHOT_DELETE 4 | |
2674 | ||
153859be | 2675 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 2676 | { |
26f54e9a | 2677 | BlockBackend *blk; |
f7b4a940 AL |
2678 | BlockDriverState *bs; |
2679 | QEMUSnapshotInfo sn; | |
2680 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2681 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2682 | int action = 0; |
2683 | qemu_timeval tv; | |
f382d43a | 2684 | bool quiet = false; |
a89d89d3 | 2685 | Error *err = NULL; |
eb769f74 | 2686 | bool image_opts = false; |
f7b4a940 | 2687 | |
ce099547 | 2688 | bdrv_oflags = BDRV_O_RDWR; |
f7b4a940 AL |
2689 | /* Parse commandline parameters */ |
2690 | for(;;) { | |
3babeb15 DB |
2691 | static const struct option long_options[] = { |
2692 | {"help", no_argument, 0, 'h'}, | |
2693 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2694 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
2695 | {0, 0, 0, 0} |
2696 | }; | |
2697 | c = getopt_long(argc, argv, "la:c:d:hq", | |
2698 | long_options, NULL); | |
b8fb60da | 2699 | if (c == -1) { |
f7b4a940 | 2700 | break; |
b8fb60da | 2701 | } |
f7b4a940 | 2702 | switch(c) { |
ef87394c | 2703 | case '?': |
f7b4a940 AL |
2704 | case 'h': |
2705 | help(); | |
153859be | 2706 | return 0; |
f7b4a940 AL |
2707 | case 'l': |
2708 | if (action) { | |
ac1307ab | 2709 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2710 | return 0; |
f7b4a940 AL |
2711 | } |
2712 | action = SNAPSHOT_LIST; | |
f5edb014 | 2713 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2714 | break; |
2715 | case 'a': | |
2716 | if (action) { | |
ac1307ab | 2717 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2718 | return 0; |
f7b4a940 AL |
2719 | } |
2720 | action = SNAPSHOT_APPLY; | |
2721 | snapshot_name = optarg; | |
2722 | break; | |
2723 | case 'c': | |
2724 | if (action) { | |
ac1307ab | 2725 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2726 | return 0; |
f7b4a940 AL |
2727 | } |
2728 | action = SNAPSHOT_CREATE; | |
2729 | snapshot_name = optarg; | |
2730 | break; | |
2731 | case 'd': | |
2732 | if (action) { | |
ac1307ab | 2733 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2734 | return 0; |
f7b4a940 AL |
2735 | } |
2736 | action = SNAPSHOT_DELETE; | |
2737 | snapshot_name = optarg; | |
2738 | break; | |
f382d43a MR |
2739 | case 'q': |
2740 | quiet = true; | |
2741 | break; | |
3babeb15 DB |
2742 | case OPTION_OBJECT: { |
2743 | QemuOpts *opts; | |
2744 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2745 | optarg, true); | |
2746 | if (!opts) { | |
2747 | return 1; | |
2748 | } | |
2749 | } break; | |
eb769f74 DB |
2750 | case OPTION_IMAGE_OPTS: |
2751 | image_opts = true; | |
2752 | break; | |
f7b4a940 AL |
2753 | } |
2754 | } | |
2755 | ||
fc11eb26 | 2756 | if (optind != argc - 1) { |
ac1307ab | 2757 | error_exit("Expecting one image file name"); |
b8fb60da | 2758 | } |
f7b4a940 AL |
2759 | filename = argv[optind++]; |
2760 | ||
3babeb15 DB |
2761 | if (qemu_opts_foreach(&qemu_object_opts, |
2762 | user_creatable_add_opts_foreach, | |
51b9b478 | 2763 | NULL, NULL)) { |
3babeb15 DB |
2764 | return 1; |
2765 | } | |
2766 | ||
f7b4a940 | 2767 | /* Open the image */ |
ce099547 | 2768 | blk = img_open(image_opts, filename, NULL, bdrv_oflags, false, quiet); |
7e7d56d9 MA |
2769 | if (!blk) { |
2770 | return 1; | |
c2abccec | 2771 | } |
7e7d56d9 | 2772 | bs = blk_bs(blk); |
f7b4a940 AL |
2773 | |
2774 | /* Perform the requested action */ | |
2775 | switch(action) { | |
2776 | case SNAPSHOT_LIST: | |
2777 | dump_snapshots(bs); | |
2778 | break; | |
2779 | ||
2780 | case SNAPSHOT_CREATE: | |
2781 | memset(&sn, 0, sizeof(sn)); | |
2782 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2783 | ||
2784 | qemu_gettimeofday(&tv); | |
2785 | sn.date_sec = tv.tv_sec; | |
2786 | sn.date_nsec = tv.tv_usec * 1000; | |
2787 | ||
2788 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2789 | if (ret) { |
15654a6d | 2790 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2791 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2792 | } |
f7b4a940 AL |
2793 | break; |
2794 | ||
2795 | case SNAPSHOT_APPLY: | |
2796 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 2797 | if (ret) { |
15654a6d | 2798 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 2799 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2800 | } |
f7b4a940 AL |
2801 | break; |
2802 | ||
2803 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2804 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 2805 | if (err) { |
c29b77f9 MA |
2806 | error_reportf_err(err, "Could not delete snapshot '%s': ", |
2807 | snapshot_name); | |
a89d89d3 | 2808 | ret = 1; |
b8fb60da | 2809 | } |
f7b4a940 AL |
2810 | break; |
2811 | } | |
2812 | ||
2813 | /* Cleanup */ | |
26f54e9a | 2814 | blk_unref(blk); |
c2abccec MK |
2815 | if (ret) { |
2816 | return 1; | |
2817 | } | |
153859be | 2818 | return 0; |
f7b4a940 AL |
2819 | } |
2820 | ||
3e85c6fd KW |
2821 | static int img_rebase(int argc, char **argv) |
2822 | { | |
26f54e9a | 2823 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
396374ca PB |
2824 | uint8_t *buf_old = NULL; |
2825 | uint8_t *buf_new = NULL; | |
f1d3cd79 | 2826 | BlockDriverState *bs = NULL; |
3e85c6fd | 2827 | char *filename; |
40055951 HR |
2828 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
2829 | int c, flags, src_flags, ret; | |
ce099547 | 2830 | bool writethrough, src_writethrough; |
3e85c6fd | 2831 | int unsafe = 0; |
6b837bc4 | 2832 | int progress = 0; |
f382d43a | 2833 | bool quiet = false; |
34b5d2c6 | 2834 | Error *local_err = NULL; |
eb769f74 | 2835 | bool image_opts = false; |
3e85c6fd KW |
2836 | |
2837 | /* Parse commandline parameters */ | |
e53dbee0 | 2838 | fmt = NULL; |
661a0f71 | 2839 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 2840 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
2841 | out_baseimg = NULL; |
2842 | out_basefmt = NULL; | |
3e85c6fd | 2843 | for(;;) { |
3babeb15 DB |
2844 | static const struct option long_options[] = { |
2845 | {"help", no_argument, 0, 'h'}, | |
2846 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 2847 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
2848 | {0, 0, 0, 0} |
2849 | }; | |
2850 | c = getopt_long(argc, argv, "hf:F:b:upt:T:q", | |
2851 | long_options, NULL); | |
b8fb60da | 2852 | if (c == -1) { |
3e85c6fd | 2853 | break; |
b8fb60da | 2854 | } |
3e85c6fd | 2855 | switch(c) { |
ef87394c | 2856 | case '?': |
3e85c6fd KW |
2857 | case 'h': |
2858 | help(); | |
2859 | return 0; | |
e53dbee0 KW |
2860 | case 'f': |
2861 | fmt = optarg; | |
2862 | break; | |
3e85c6fd KW |
2863 | case 'F': |
2864 | out_basefmt = optarg; | |
2865 | break; | |
2866 | case 'b': | |
2867 | out_baseimg = optarg; | |
2868 | break; | |
2869 | case 'u': | |
2870 | unsafe = 1; | |
2871 | break; | |
6b837bc4 JS |
2872 | case 'p': |
2873 | progress = 1; | |
2874 | break; | |
661a0f71 FS |
2875 | case 't': |
2876 | cache = optarg; | |
2877 | break; | |
40055951 HR |
2878 | case 'T': |
2879 | src_cache = optarg; | |
2880 | break; | |
f382d43a MR |
2881 | case 'q': |
2882 | quiet = true; | |
2883 | break; | |
3babeb15 DB |
2884 | case OPTION_OBJECT: { |
2885 | QemuOpts *opts; | |
2886 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
2887 | optarg, true); | |
2888 | if (!opts) { | |
2889 | return 1; | |
2890 | } | |
2891 | } break; | |
eb769f74 DB |
2892 | case OPTION_IMAGE_OPTS: |
2893 | image_opts = true; | |
2894 | break; | |
3e85c6fd KW |
2895 | } |
2896 | } | |
2897 | ||
f382d43a MR |
2898 | if (quiet) { |
2899 | progress = 0; | |
2900 | } | |
2901 | ||
ac1307ab FZ |
2902 | if (optind != argc - 1) { |
2903 | error_exit("Expecting one image file name"); | |
2904 | } | |
2905 | if (!unsafe && !out_baseimg) { | |
2906 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 2907 | } |
3e85c6fd KW |
2908 | filename = argv[optind++]; |
2909 | ||
3babeb15 DB |
2910 | if (qemu_opts_foreach(&qemu_object_opts, |
2911 | user_creatable_add_opts_foreach, | |
51b9b478 | 2912 | NULL, NULL)) { |
3babeb15 DB |
2913 | return 1; |
2914 | } | |
2915 | ||
6b837bc4 JS |
2916 | qemu_progress_init(progress, 2.0); |
2917 | qemu_progress_print(0, 100); | |
2918 | ||
661a0f71 | 2919 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
ce099547 | 2920 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); |
661a0f71 FS |
2921 | if (ret < 0) { |
2922 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 2923 | goto out; |
661a0f71 FS |
2924 | } |
2925 | ||
ce099547 KW |
2926 | src_flags = 0; |
2927 | ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); | |
40055951 HR |
2928 | if (ret < 0) { |
2929 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 2930 | goto out; |
40055951 HR |
2931 | } |
2932 | ||
ce099547 KW |
2933 | /* The source files are opened read-only, don't care about WCE */ |
2934 | assert((src_flags & BDRV_O_RDWR) == 0); | |
2935 | (void) src_writethrough; | |
2936 | ||
3e85c6fd KW |
2937 | /* |
2938 | * Open the images. | |
2939 | * | |
2940 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
2941 | * the reference to a renamed or moved backing file. | |
2942 | */ | |
ce099547 | 2943 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 | 2944 | if (!blk) { |
40ed35a3 SH |
2945 | ret = -1; |
2946 | goto out; | |
c2abccec | 2947 | } |
7e7d56d9 | 2948 | bs = blk_bs(blk); |
3e85c6fd | 2949 | |
3e85c6fd | 2950 | if (out_basefmt != NULL) { |
644483d9 | 2951 | if (bdrv_find_format(out_basefmt) == NULL) { |
15654a6d | 2952 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
2953 | ret = -1; |
2954 | goto out; | |
3e85c6fd KW |
2955 | } |
2956 | } | |
2957 | ||
2958 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 2959 | if (!unsafe) { |
9a29e18f | 2960 | char backing_name[PATH_MAX]; |
644483d9 HR |
2961 | QDict *options = NULL; |
2962 | ||
2963 | if (bs->backing_format[0] != '\0') { | |
2964 | options = qdict_new(); | |
2965 | qdict_put(options, "driver", qstring_from_str(bs->backing_format)); | |
2966 | } | |
3e85c6fd | 2967 | |
3e85c6fd | 2968 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
efaa7c4e | 2969 | blk_old_backing = blk_new_open(backing_name, NULL, |
644483d9 HR |
2970 | options, src_flags, &local_err); |
2971 | if (!blk_old_backing) { | |
c29b77f9 MA |
2972 | error_reportf_err(local_err, |
2973 | "Could not open old backing file '%s': ", | |
2974 | backing_name); | |
e84a0dd5 | 2975 | ret = -1; |
c2abccec | 2976 | goto out; |
3e85c6fd | 2977 | } |
644483d9 | 2978 | |
a616673d | 2979 | if (out_baseimg[0]) { |
644483d9 HR |
2980 | if (out_basefmt) { |
2981 | options = qdict_new(); | |
2982 | qdict_put(options, "driver", qstring_from_str(out_basefmt)); | |
2983 | } else { | |
2984 | options = NULL; | |
2985 | } | |
2986 | ||
efaa7c4e | 2987 | blk_new_backing = blk_new_open(out_baseimg, NULL, |
644483d9 HR |
2988 | options, src_flags, &local_err); |
2989 | if (!blk_new_backing) { | |
c29b77f9 MA |
2990 | error_reportf_err(local_err, |
2991 | "Could not open new backing file '%s': ", | |
2992 | out_baseimg); | |
e84a0dd5 | 2993 | ret = -1; |
a616673d AB |
2994 | goto out; |
2995 | } | |
3e85c6fd KW |
2996 | } |
2997 | } | |
2998 | ||
2999 | /* | |
3000 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
3001 | * accesses go to the backing file. We must therefore compare this cluster | |
3002 | * in the old and new backing file, and if they differ we need to copy it | |
3003 | * from the old backing file into the COW file. | |
3004 | * | |
3005 | * If qemu-img crashes during this step, no harm is done. The content of | |
3006 | * the image is the same as the original one at any time. | |
3007 | */ | |
3008 | if (!unsafe) { | |
52bf1e72 MA |
3009 | int64_t num_sectors; |
3010 | int64_t old_backing_num_sectors; | |
3011 | int64_t new_backing_num_sectors = 0; | |
3e85c6fd | 3012 | uint64_t sector; |
cc60e327 | 3013 | int n; |
1f710495 | 3014 | float local_progress = 0; |
d6771bfa | 3015 | |
f1d3cd79 HR |
3016 | buf_old = blk_blockalign(blk, IO_BUF_SIZE); |
3017 | buf_new = blk_blockalign(blk, IO_BUF_SIZE); | |
3e85c6fd | 3018 | |
f1d3cd79 | 3019 | num_sectors = blk_nb_sectors(blk); |
52bf1e72 MA |
3020 | if (num_sectors < 0) { |
3021 | error_report("Could not get size of '%s': %s", | |
3022 | filename, strerror(-num_sectors)); | |
3023 | ret = -1; | |
3024 | goto out; | |
3025 | } | |
f1d3cd79 | 3026 | old_backing_num_sectors = blk_nb_sectors(blk_old_backing); |
52bf1e72 | 3027 | if (old_backing_num_sectors < 0) { |
9a29e18f | 3028 | char backing_name[PATH_MAX]; |
52bf1e72 MA |
3029 | |
3030 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
3031 | error_report("Could not get size of '%s': %s", | |
3032 | backing_name, strerror(-old_backing_num_sectors)); | |
3033 | ret = -1; | |
3034 | goto out; | |
3035 | } | |
f1d3cd79 HR |
3036 | if (blk_new_backing) { |
3037 | new_backing_num_sectors = blk_nb_sectors(blk_new_backing); | |
52bf1e72 MA |
3038 | if (new_backing_num_sectors < 0) { |
3039 | error_report("Could not get size of '%s': %s", | |
3040 | out_baseimg, strerror(-new_backing_num_sectors)); | |
3041 | ret = -1; | |
3042 | goto out; | |
3043 | } | |
a616673d | 3044 | } |
3e85c6fd | 3045 | |
1f710495 KW |
3046 | if (num_sectors != 0) { |
3047 | local_progress = (float)100 / | |
3048 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
3049 | } | |
3050 | ||
3e85c6fd KW |
3051 | for (sector = 0; sector < num_sectors; sector += n) { |
3052 | ||
3053 | /* How many sectors can we handle with the next read? */ | |
3054 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
3055 | n = (IO_BUF_SIZE / 512); | |
3056 | } else { | |
3057 | n = num_sectors - sector; | |
3058 | } | |
3059 | ||
3060 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 | 3061 | ret = bdrv_is_allocated(bs, sector, n, &n); |
d663640c PB |
3062 | if (ret < 0) { |
3063 | error_report("error while reading image metadata: %s", | |
3064 | strerror(-ret)); | |
3065 | goto out; | |
3066 | } | |
cc60e327 | 3067 | if (ret) { |
3e85c6fd KW |
3068 | continue; |
3069 | } | |
3070 | ||
87a1b3e3 KW |
3071 | /* |
3072 | * Read old and new backing file and take into consideration that | |
3073 | * backing files may be smaller than the COW image. | |
3074 | */ | |
3075 | if (sector >= old_backing_num_sectors) { | |
3076 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
3077 | } else { | |
3078 | if (sector + n > old_backing_num_sectors) { | |
3079 | n = old_backing_num_sectors - sector; | |
3080 | } | |
3081 | ||
9166920a EB |
3082 | ret = blk_pread(blk_old_backing, sector << BDRV_SECTOR_BITS, |
3083 | buf_old, n << BDRV_SECTOR_BITS); | |
87a1b3e3 KW |
3084 | if (ret < 0) { |
3085 | error_report("error while reading from old backing file"); | |
3086 | goto out; | |
3087 | } | |
3e85c6fd | 3088 | } |
87a1b3e3 | 3089 | |
f1d3cd79 | 3090 | if (sector >= new_backing_num_sectors || !blk_new_backing) { |
87a1b3e3 KW |
3091 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
3092 | } else { | |
3093 | if (sector + n > new_backing_num_sectors) { | |
3094 | n = new_backing_num_sectors - sector; | |
3095 | } | |
3096 | ||
9166920a EB |
3097 | ret = blk_pread(blk_new_backing, sector << BDRV_SECTOR_BITS, |
3098 | buf_new, n << BDRV_SECTOR_BITS); | |
87a1b3e3 KW |
3099 | if (ret < 0) { |
3100 | error_report("error while reading from new backing file"); | |
3101 | goto out; | |
3102 | } | |
3e85c6fd KW |
3103 | } |
3104 | ||
3105 | /* If they differ, we need to write to the COW file */ | |
3106 | uint64_t written = 0; | |
3107 | ||
3108 | while (written < n) { | |
3109 | int pnum; | |
3110 | ||
3111 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 3112 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd | 3113 | { |
9166920a EB |
3114 | ret = blk_pwrite(blk, |
3115 | (sector + written) << BDRV_SECTOR_BITS, | |
3116 | buf_old + written * 512, | |
3117 | pnum << BDRV_SECTOR_BITS, 0); | |
3e85c6fd | 3118 | if (ret < 0) { |
15654a6d | 3119 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 3120 | strerror(-ret)); |
c2abccec | 3121 | goto out; |
3e85c6fd KW |
3122 | } |
3123 | } | |
3124 | ||
3125 | written += pnum; | |
3126 | } | |
6b837bc4 | 3127 | qemu_progress_print(local_progress, 100); |
3e85c6fd KW |
3128 | } |
3129 | } | |
3130 | ||
3131 | /* | |
3132 | * Change the backing file. All clusters that are different from the old | |
3133 | * backing file are overwritten in the COW file now, so the visible content | |
3134 | * doesn't change when we switch the backing file. | |
3135 | */ | |
a616673d AB |
3136 | if (out_baseimg && *out_baseimg) { |
3137 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
3138 | } else { | |
3139 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
3140 | } | |
3141 | ||
3e85c6fd | 3142 | if (ret == -ENOSPC) { |
15654a6d JS |
3143 | error_report("Could not change the backing file to '%s': No " |
3144 | "space left in the file header", out_baseimg); | |
3e85c6fd | 3145 | } else if (ret < 0) { |
15654a6d | 3146 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
3147 | out_baseimg, strerror(-ret)); |
3148 | } | |
3149 | ||
6b837bc4 | 3150 | qemu_progress_print(100, 0); |
3e85c6fd KW |
3151 | /* |
3152 | * TODO At this point it is possible to check if any clusters that are | |
3153 | * allocated in the COW file are the same in the backing file. If so, they | |
3154 | * could be dropped from the COW file. Don't do this before switching the | |
3155 | * backing file, in case of a crash this would lead to corruption. | |
3156 | */ | |
c2abccec | 3157 | out: |
6b837bc4 | 3158 | qemu_progress_end(); |
3e85c6fd KW |
3159 | /* Cleanup */ |
3160 | if (!unsafe) { | |
26f54e9a | 3161 | blk_unref(blk_old_backing); |
26f54e9a | 3162 | blk_unref(blk_new_backing); |
3e85c6fd | 3163 | } |
396374ca PB |
3164 | qemu_vfree(buf_old); |
3165 | qemu_vfree(buf_new); | |
3e85c6fd | 3166 | |
26f54e9a | 3167 | blk_unref(blk); |
c2abccec MK |
3168 | if (ret) { |
3169 | return 1; | |
3170 | } | |
3e85c6fd KW |
3171 | return 0; |
3172 | } | |
3173 | ||
ae6b0ed6 SH |
3174 | static int img_resize(int argc, char **argv) |
3175 | { | |
6750e795 | 3176 | Error *err = NULL; |
ae6b0ed6 SH |
3177 | int c, ret, relative; |
3178 | const char *filename, *fmt, *size; | |
3179 | int64_t n, total_size; | |
f382d43a | 3180 | bool quiet = false; |
26f54e9a | 3181 | BlockBackend *blk = NULL; |
20caf0f7 | 3182 | QemuOpts *param; |
3babeb15 | 3183 | |
20caf0f7 DXW |
3184 | static QemuOptsList resize_options = { |
3185 | .name = "resize_options", | |
3186 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
3187 | .desc = { | |
3188 | { | |
3189 | .name = BLOCK_OPT_SIZE, | |
3190 | .type = QEMU_OPT_SIZE, | |
3191 | .help = "Virtual disk size" | |
3192 | }, { | |
3193 | /* end of list */ | |
3194 | } | |
ae6b0ed6 | 3195 | }, |
ae6b0ed6 | 3196 | }; |
eb769f74 | 3197 | bool image_opts = false; |
ae6b0ed6 | 3198 | |
e80fec7f KW |
3199 | /* Remove size from argv manually so that negative numbers are not treated |
3200 | * as options by getopt. */ | |
3201 | if (argc < 3) { | |
ac1307ab | 3202 | error_exit("Not enough arguments"); |
e80fec7f KW |
3203 | return 1; |
3204 | } | |
3205 | ||
3206 | size = argv[--argc]; | |
3207 | ||
3208 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
3209 | fmt = NULL; |
3210 | for(;;) { | |
3babeb15 DB |
3211 | static const struct option long_options[] = { |
3212 | {"help", no_argument, 0, 'h'}, | |
3213 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3214 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3215 | {0, 0, 0, 0} |
3216 | }; | |
3217 | c = getopt_long(argc, argv, "f:hq", | |
3218 | long_options, NULL); | |
ae6b0ed6 SH |
3219 | if (c == -1) { |
3220 | break; | |
3221 | } | |
3222 | switch(c) { | |
ef87394c | 3223 | case '?': |
ae6b0ed6 SH |
3224 | case 'h': |
3225 | help(); | |
3226 | break; | |
3227 | case 'f': | |
3228 | fmt = optarg; | |
3229 | break; | |
f382d43a MR |
3230 | case 'q': |
3231 | quiet = true; | |
3232 | break; | |
3babeb15 DB |
3233 | case OPTION_OBJECT: { |
3234 | QemuOpts *opts; | |
3235 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3236 | optarg, true); | |
3237 | if (!opts) { | |
3238 | return 1; | |
3239 | } | |
3240 | } break; | |
eb769f74 DB |
3241 | case OPTION_IMAGE_OPTS: |
3242 | image_opts = true; | |
3243 | break; | |
ae6b0ed6 SH |
3244 | } |
3245 | } | |
fc11eb26 | 3246 | if (optind != argc - 1) { |
ac1307ab | 3247 | error_exit("Expecting one image file name"); |
ae6b0ed6 SH |
3248 | } |
3249 | filename = argv[optind++]; | |
ae6b0ed6 | 3250 | |
3babeb15 DB |
3251 | if (qemu_opts_foreach(&qemu_object_opts, |
3252 | user_creatable_add_opts_foreach, | |
51b9b478 | 3253 | NULL, NULL)) { |
3babeb15 DB |
3254 | return 1; |
3255 | } | |
3256 | ||
ae6b0ed6 SH |
3257 | /* Choose grow, shrink, or absolute resize mode */ |
3258 | switch (size[0]) { | |
3259 | case '+': | |
3260 | relative = 1; | |
3261 | size++; | |
3262 | break; | |
3263 | case '-': | |
3264 | relative = -1; | |
3265 | size++; | |
3266 | break; | |
3267 | default: | |
3268 | relative = 0; | |
3269 | break; | |
3270 | } | |
3271 | ||
3272 | /* Parse size */ | |
87ea75d5 | 3273 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
f43e47db | 3274 | qemu_opt_set(param, BLOCK_OPT_SIZE, size, &err); |
6750e795 MA |
3275 | if (err) { |
3276 | error_report_err(err); | |
2a81998a | 3277 | ret = -1; |
20caf0f7 | 3278 | qemu_opts_del(param); |
2a81998a | 3279 | goto out; |
ae6b0ed6 | 3280 | } |
20caf0f7 DXW |
3281 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
3282 | qemu_opts_del(param); | |
ae6b0ed6 | 3283 | |
efaa7c4e | 3284 | blk = img_open(image_opts, filename, fmt, |
ce099547 | 3285 | BDRV_O_RDWR, false, quiet); |
7e7d56d9 | 3286 | if (!blk) { |
2a81998a JS |
3287 | ret = -1; |
3288 | goto out; | |
c2abccec | 3289 | } |
ae6b0ed6 SH |
3290 | |
3291 | if (relative) { | |
f1d3cd79 | 3292 | total_size = blk_getlength(blk) + n * relative; |
ae6b0ed6 SH |
3293 | } else { |
3294 | total_size = n; | |
3295 | } | |
3296 | if (total_size <= 0) { | |
15654a6d | 3297 | error_report("New image size must be positive"); |
c2abccec MK |
3298 | ret = -1; |
3299 | goto out; | |
ae6b0ed6 SH |
3300 | } |
3301 | ||
f1d3cd79 | 3302 | ret = blk_truncate(blk, total_size); |
ae6b0ed6 SH |
3303 | switch (ret) { |
3304 | case 0: | |
f382d43a | 3305 | qprintf(quiet, "Image resized.\n"); |
ae6b0ed6 SH |
3306 | break; |
3307 | case -ENOTSUP: | |
259b2173 | 3308 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
3309 | break; |
3310 | case -EACCES: | |
15654a6d | 3311 | error_report("Image is read-only"); |
ae6b0ed6 SH |
3312 | break; |
3313 | default: | |
bcf23482 | 3314 | error_report("Error resizing image: %s", strerror(-ret)); |
ae6b0ed6 SH |
3315 | break; |
3316 | } | |
c2abccec | 3317 | out: |
26f54e9a | 3318 | blk_unref(blk); |
c2abccec MK |
3319 | if (ret) { |
3320 | return 1; | |
3321 | } | |
ae6b0ed6 SH |
3322 | return 0; |
3323 | } | |
3324 | ||
76a3a34d | 3325 | static void amend_status_cb(BlockDriverState *bs, |
8b13976d HR |
3326 | int64_t offset, int64_t total_work_size, |
3327 | void *opaque) | |
76a3a34d HR |
3328 | { |
3329 | qemu_progress_print(100.f * offset / total_work_size, 0); | |
3330 | } | |
3331 | ||
6f176b48 HR |
3332 | static int img_amend(int argc, char **argv) |
3333 | { | |
dc523cd3 | 3334 | Error *err = NULL; |
6f176b48 HR |
3335 | int c, ret = 0; |
3336 | char *options = NULL; | |
83d0521a CL |
3337 | QemuOptsList *create_opts = NULL; |
3338 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
3339 | const char *fmt = NULL, *filename, *cache; |
3340 | int flags; | |
ce099547 | 3341 | bool writethrough; |
76a3a34d | 3342 | bool quiet = false, progress = false; |
26f54e9a | 3343 | BlockBackend *blk = NULL; |
6f176b48 | 3344 | BlockDriverState *bs = NULL; |
eb769f74 | 3345 | bool image_opts = false; |
6f176b48 | 3346 | |
bd39e6ed | 3347 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 3348 | for (;;) { |
3babeb15 DB |
3349 | static const struct option long_options[] = { |
3350 | {"help", no_argument, 0, 'h'}, | |
3351 | {"object", required_argument, 0, OPTION_OBJECT}, | |
eb769f74 | 3352 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
3babeb15 DB |
3353 | {0, 0, 0, 0} |
3354 | }; | |
3355 | c = getopt_long(argc, argv, "ho:f:t:pq", | |
3356 | long_options, NULL); | |
6f176b48 HR |
3357 | if (c == -1) { |
3358 | break; | |
3359 | } | |
3360 | ||
3361 | switch (c) { | |
3362 | case 'h': | |
3363 | case '?': | |
3364 | help(); | |
3365 | break; | |
3366 | case 'o': | |
626f84f3 KW |
3367 | if (!is_valid_option_list(optarg)) { |
3368 | error_report("Invalid option list: %s", optarg); | |
3369 | ret = -1; | |
e814dffc | 3370 | goto out_no_progress; |
626f84f3 KW |
3371 | } |
3372 | if (!options) { | |
3373 | options = g_strdup(optarg); | |
3374 | } else { | |
3375 | char *old_options = options; | |
3376 | options = g_strdup_printf("%s,%s", options, optarg); | |
3377 | g_free(old_options); | |
3378 | } | |
6f176b48 HR |
3379 | break; |
3380 | case 'f': | |
3381 | fmt = optarg; | |
3382 | break; | |
bd39e6ed HR |
3383 | case 't': |
3384 | cache = optarg; | |
3385 | break; | |
76a3a34d HR |
3386 | case 'p': |
3387 | progress = true; | |
3388 | break; | |
6f176b48 HR |
3389 | case 'q': |
3390 | quiet = true; | |
3391 | break; | |
3babeb15 DB |
3392 | case OPTION_OBJECT: |
3393 | opts = qemu_opts_parse_noisily(&qemu_object_opts, | |
3394 | optarg, true); | |
3395 | if (!opts) { | |
3396 | ret = -1; | |
3397 | goto out_no_progress; | |
3398 | } | |
3399 | break; | |
eb769f74 DB |
3400 | case OPTION_IMAGE_OPTS: |
3401 | image_opts = true; | |
3402 | break; | |
6f176b48 HR |
3403 | } |
3404 | } | |
3405 | ||
a283cb6e | 3406 | if (!options) { |
ac1307ab | 3407 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
3408 | } |
3409 | ||
3babeb15 DB |
3410 | if (qemu_opts_foreach(&qemu_object_opts, |
3411 | user_creatable_add_opts_foreach, | |
51b9b478 | 3412 | NULL, NULL)) { |
3babeb15 DB |
3413 | ret = -1; |
3414 | goto out_no_progress; | |
3415 | } | |
3416 | ||
76a3a34d HR |
3417 | if (quiet) { |
3418 | progress = false; | |
3419 | } | |
3420 | qemu_progress_init(progress, 1.0); | |
3421 | ||
a283cb6e KW |
3422 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
3423 | if (fmt && has_help_option(options)) { | |
3424 | /* If a format is explicitly specified (and possibly no filename is | |
3425 | * given), print option help here */ | |
3426 | ret = print_block_option_help(filename, fmt); | |
3427 | goto out; | |
6f176b48 HR |
3428 | } |
3429 | ||
a283cb6e | 3430 | if (optind != argc - 1) { |
b2f27e44 HR |
3431 | error_report("Expecting one image file name"); |
3432 | ret = -1; | |
3433 | goto out; | |
a283cb6e | 3434 | } |
6f176b48 | 3435 | |
ce099547 KW |
3436 | flags = BDRV_O_RDWR; |
3437 | ret = bdrv_parse_cache_mode(cache, &flags, &writethrough); | |
bd39e6ed HR |
3438 | if (ret < 0) { |
3439 | error_report("Invalid cache option: %s", cache); | |
3440 | goto out; | |
3441 | } | |
3442 | ||
ce099547 | 3443 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
7e7d56d9 | 3444 | if (!blk) { |
6f176b48 HR |
3445 | ret = -1; |
3446 | goto out; | |
3447 | } | |
7e7d56d9 | 3448 | bs = blk_bs(blk); |
6f176b48 HR |
3449 | |
3450 | fmt = bs->drv->format_name; | |
3451 | ||
626f84f3 | 3452 | if (has_help_option(options)) { |
a283cb6e | 3453 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
3454 | ret = print_block_option_help(filename, fmt); |
3455 | goto out; | |
3456 | } | |
3457 | ||
b2439d26 HR |
3458 | if (!bs->drv->create_opts) { |
3459 | error_report("Format driver '%s' does not support any options to amend", | |
3460 | fmt); | |
3461 | ret = -1; | |
3462 | goto out; | |
3463 | } | |
3464 | ||
c282e1fd | 3465 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a | 3466 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
ece9086e PB |
3467 | qemu_opts_do_parse(opts, options, NULL, &err); |
3468 | if (err) { | |
3469 | error_report_err(err); | |
3470 | ret = -1; | |
3471 | goto out; | |
6f176b48 HR |
3472 | } |
3473 | ||
76a3a34d HR |
3474 | /* In case the driver does not call amend_status_cb() */ |
3475 | qemu_progress_print(0.f, 0); | |
8b13976d | 3476 | ret = bdrv_amend_options(bs, opts, &amend_status_cb, NULL); |
76a3a34d | 3477 | qemu_progress_print(100.f, 0); |
6f176b48 HR |
3478 | if (ret < 0) { |
3479 | error_report("Error while amending options: %s", strerror(-ret)); | |
3480 | goto out; | |
3481 | } | |
3482 | ||
3483 | out: | |
76a3a34d HR |
3484 | qemu_progress_end(); |
3485 | ||
e814dffc | 3486 | out_no_progress: |
26f54e9a | 3487 | blk_unref(blk); |
83d0521a CL |
3488 | qemu_opts_del(opts); |
3489 | qemu_opts_free(create_opts); | |
626f84f3 KW |
3490 | g_free(options); |
3491 | ||
6f176b48 HR |
3492 | if (ret) { |
3493 | return 1; | |
3494 | } | |
3495 | return 0; | |
3496 | } | |
3497 | ||
b6133b8c KW |
3498 | typedef struct BenchData { |
3499 | BlockBackend *blk; | |
3500 | uint64_t image_size; | |
b6495fa8 | 3501 | bool write; |
b6133b8c | 3502 | int bufsize; |
83de9be0 | 3503 | int step; |
b6133b8c KW |
3504 | int nrreq; |
3505 | int n; | |
55d539c8 KW |
3506 | int flush_interval; |
3507 | bool drain_on_flush; | |
b6133b8c KW |
3508 | uint8_t *buf; |
3509 | QEMUIOVector *qiov; | |
3510 | ||
3511 | int in_flight; | |
55d539c8 | 3512 | bool in_flush; |
b6133b8c KW |
3513 | uint64_t offset; |
3514 | } BenchData; | |
3515 | ||
55d539c8 KW |
3516 | static void bench_undrained_flush_cb(void *opaque, int ret) |
3517 | { | |
3518 | if (ret < 0) { | |
df3c286c | 3519 | error_report("Failed flush request: %s", strerror(-ret)); |
55d539c8 KW |
3520 | exit(EXIT_FAILURE); |
3521 | } | |
3522 | } | |
3523 | ||
b6133b8c KW |
3524 | static void bench_cb(void *opaque, int ret) |
3525 | { | |
3526 | BenchData *b = opaque; | |
3527 | BlockAIOCB *acb; | |
3528 | ||
3529 | if (ret < 0) { | |
df3c286c | 3530 | error_report("Failed request: %s", strerror(-ret)); |
b6133b8c KW |
3531 | exit(EXIT_FAILURE); |
3532 | } | |
55d539c8 KW |
3533 | |
3534 | if (b->in_flush) { | |
3535 | /* Just finished a flush with drained queue: Start next requests */ | |
3536 | assert(b->in_flight == 0); | |
3537 | b->in_flush = false; | |
3538 | } else if (b->in_flight > 0) { | |
3539 | int remaining = b->n - b->in_flight; | |
3540 | ||
b6133b8c KW |
3541 | b->n--; |
3542 | b->in_flight--; | |
55d539c8 KW |
3543 | |
3544 | /* Time for flush? Drain queue if requested, then flush */ | |
3545 | if (b->flush_interval && remaining % b->flush_interval == 0) { | |
3546 | if (!b->in_flight || !b->drain_on_flush) { | |
3547 | BlockCompletionFunc *cb; | |
3548 | ||
3549 | if (b->drain_on_flush) { | |
3550 | b->in_flush = true; | |
3551 | cb = bench_cb; | |
3552 | } else { | |
3553 | cb = bench_undrained_flush_cb; | |
3554 | } | |
3555 | ||
3556 | acb = blk_aio_flush(b->blk, cb, b); | |
3557 | if (!acb) { | |
3558 | error_report("Failed to issue flush request"); | |
3559 | exit(EXIT_FAILURE); | |
3560 | } | |
3561 | } | |
3562 | if (b->drain_on_flush) { | |
3563 | return; | |
3564 | } | |
3565 | } | |
b6133b8c KW |
3566 | } |
3567 | ||
3568 | while (b->n > b->in_flight && b->in_flight < b->nrreq) { | |
4baaa8c3 PB |
3569 | int64_t offset = b->offset; |
3570 | /* blk_aio_* might look for completed I/Os and kick bench_cb | |
3571 | * again, so make sure this operation is counted by in_flight | |
3572 | * and b->offset is ready for the next submission. | |
3573 | */ | |
3574 | b->in_flight++; | |
3575 | b->offset += b->step; | |
3576 | b->offset %= b->image_size; | |
b6495fa8 | 3577 | if (b->write) { |
4baaa8c3 | 3578 | acb = blk_aio_pwritev(b->blk, offset, b->qiov, 0, bench_cb, b); |
b6495fa8 | 3579 | } else { |
4baaa8c3 | 3580 | acb = blk_aio_preadv(b->blk, offset, b->qiov, 0, bench_cb, b); |
b6495fa8 | 3581 | } |
b6133b8c KW |
3582 | if (!acb) { |
3583 | error_report("Failed to issue request"); | |
3584 | exit(EXIT_FAILURE); | |
3585 | } | |
b6133b8c KW |
3586 | } |
3587 | } | |
3588 | ||
3589 | static int img_bench(int argc, char **argv) | |
3590 | { | |
3591 | int c, ret = 0; | |
3592 | const char *fmt = NULL, *filename; | |
3593 | bool quiet = false; | |
3594 | bool image_opts = false; | |
b6495fa8 | 3595 | bool is_write = false; |
b6133b8c KW |
3596 | int count = 75000; |
3597 | int depth = 64; | |
d3199a31 | 3598 | int64_t offset = 0; |
b6133b8c | 3599 | size_t bufsize = 4096; |
b6495fa8 | 3600 | int pattern = 0; |
83de9be0 | 3601 | size_t step = 0; |
55d539c8 KW |
3602 | int flush_interval = 0; |
3603 | bool drain_on_flush = true; | |
b6133b8c KW |
3604 | int64_t image_size; |
3605 | BlockBackend *blk = NULL; | |
3606 | BenchData data = {}; | |
3607 | int flags = 0; | |
604e8613 | 3608 | bool writethrough = false; |
b6133b8c KW |
3609 | struct timeval t1, t2; |
3610 | int i; | |
3611 | ||
3612 | for (;;) { | |
3613 | static const struct option long_options[] = { | |
3614 | {"help", no_argument, 0, 'h'}, | |
55d539c8 | 3615 | {"flush-interval", required_argument, 0, OPTION_FLUSH_INTERVAL}, |
b6133b8c | 3616 | {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, |
b6495fa8 | 3617 | {"pattern", required_argument, 0, OPTION_PATTERN}, |
55d539c8 | 3618 | {"no-drain", no_argument, 0, OPTION_NO_DRAIN}, |
b6133b8c KW |
3619 | {0, 0, 0, 0} |
3620 | }; | |
83de9be0 | 3621 | c = getopt_long(argc, argv, "hc:d:f:no:qs:S:t:w", long_options, NULL); |
b6133b8c KW |
3622 | if (c == -1) { |
3623 | break; | |
3624 | } | |
3625 | ||
3626 | switch (c) { | |
3627 | case 'h': | |
3628 | case '?': | |
3629 | help(); | |
3630 | break; | |
3631 | case 'c': | |
3632 | { | |
8b3c6792 PM |
3633 | unsigned long res; |
3634 | ||
3635 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
b6133b8c KW |
3636 | error_report("Invalid request count specified"); |
3637 | return 1; | |
3638 | } | |
8b3c6792 | 3639 | count = res; |
b6133b8c KW |
3640 | break; |
3641 | } | |
3642 | case 'd': | |
3643 | { | |
8b3c6792 PM |
3644 | unsigned long res; |
3645 | ||
3646 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
b6133b8c KW |
3647 | error_report("Invalid queue depth specified"); |
3648 | return 1; | |
3649 | } | |
8b3c6792 | 3650 | depth = res; |
b6133b8c KW |
3651 | break; |
3652 | } | |
3653 | case 'f': | |
3654 | fmt = optarg; | |
3655 | break; | |
3656 | case 'n': | |
3657 | flags |= BDRV_O_NATIVE_AIO; | |
3658 | break; | |
d3199a31 KW |
3659 | case 'o': |
3660 | { | |
606caa0a MA |
3661 | offset = cvtnum(optarg); |
3662 | if (offset < 0) { | |
d3199a31 KW |
3663 | error_report("Invalid offset specified"); |
3664 | return 1; | |
3665 | } | |
3666 | break; | |
3667 | } | |
3668 | break; | |
b6133b8c KW |
3669 | case 'q': |
3670 | quiet = true; | |
3671 | break; | |
3672 | case 's': | |
3673 | { | |
3674 | int64_t sval; | |
b6133b8c | 3675 | |
606caa0a MA |
3676 | sval = cvtnum(optarg); |
3677 | if (sval < 0 || sval > INT_MAX) { | |
b6133b8c KW |
3678 | error_report("Invalid buffer size specified"); |
3679 | return 1; | |
3680 | } | |
3681 | ||
3682 | bufsize = sval; | |
3683 | break; | |
3684 | } | |
83de9be0 KW |
3685 | case 'S': |
3686 | { | |
3687 | int64_t sval; | |
83de9be0 | 3688 | |
606caa0a MA |
3689 | sval = cvtnum(optarg); |
3690 | if (sval < 0 || sval > INT_MAX) { | |
83de9be0 KW |
3691 | error_report("Invalid step size specified"); |
3692 | return 1; | |
3693 | } | |
3694 | ||
3695 | step = sval; | |
3696 | break; | |
3697 | } | |
b6133b8c KW |
3698 | case 't': |
3699 | ret = bdrv_parse_cache_mode(optarg, &flags, &writethrough); | |
3700 | if (ret < 0) { | |
3701 | error_report("Invalid cache mode"); | |
3702 | ret = -1; | |
3703 | goto out; | |
3704 | } | |
3705 | break; | |
b6495fa8 KW |
3706 | case 'w': |
3707 | flags |= BDRV_O_RDWR; | |
3708 | is_write = true; | |
3709 | break; | |
3710 | case OPTION_PATTERN: | |
3711 | { | |
8b3c6792 PM |
3712 | unsigned long res; |
3713 | ||
3714 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > 0xff) { | |
b6495fa8 KW |
3715 | error_report("Invalid pattern byte specified"); |
3716 | return 1; | |
3717 | } | |
8b3c6792 | 3718 | pattern = res; |
b6495fa8 KW |
3719 | break; |
3720 | } | |
55d539c8 KW |
3721 | case OPTION_FLUSH_INTERVAL: |
3722 | { | |
8b3c6792 PM |
3723 | unsigned long res; |
3724 | ||
3725 | if (qemu_strtoul(optarg, NULL, 0, &res) < 0 || res > INT_MAX) { | |
55d539c8 KW |
3726 | error_report("Invalid flush interval specified"); |
3727 | return 1; | |
3728 | } | |
8b3c6792 | 3729 | flush_interval = res; |
55d539c8 KW |
3730 | break; |
3731 | } | |
3732 | case OPTION_NO_DRAIN: | |
3733 | drain_on_flush = false; | |
3734 | break; | |
b6133b8c KW |
3735 | case OPTION_IMAGE_OPTS: |
3736 | image_opts = true; | |
3737 | break; | |
3738 | } | |
3739 | } | |
3740 | ||
3741 | if (optind != argc - 1) { | |
3742 | error_exit("Expecting one image file name"); | |
3743 | } | |
3744 | filename = argv[argc - 1]; | |
3745 | ||
55d539c8 KW |
3746 | if (!is_write && flush_interval) { |
3747 | error_report("--flush-interval is only available in write tests"); | |
3748 | ret = -1; | |
3749 | goto out; | |
3750 | } | |
3751 | if (flush_interval && flush_interval < depth) { | |
3752 | error_report("Flush interval can't be smaller than depth"); | |
3753 | ret = -1; | |
3754 | goto out; | |
3755 | } | |
3756 | ||
b6133b8c KW |
3757 | blk = img_open(image_opts, filename, fmt, flags, writethrough, quiet); |
3758 | if (!blk) { | |
3759 | ret = -1; | |
3760 | goto out; | |
3761 | } | |
3762 | ||
3763 | image_size = blk_getlength(blk); | |
3764 | if (image_size < 0) { | |
3765 | ret = image_size; | |
3766 | goto out; | |
3767 | } | |
3768 | ||
3769 | data = (BenchData) { | |
55d539c8 KW |
3770 | .blk = blk, |
3771 | .image_size = image_size, | |
3772 | .bufsize = bufsize, | |
3773 | .step = step ?: bufsize, | |
3774 | .nrreq = depth, | |
3775 | .n = count, | |
3776 | .offset = offset, | |
3777 | .write = is_write, | |
3778 | .flush_interval = flush_interval, | |
3779 | .drain_on_flush = drain_on_flush, | |
b6133b8c | 3780 | }; |
d3199a31 | 3781 | printf("Sending %d %s requests, %d bytes each, %d in parallel " |
83de9be0 | 3782 | "(starting at offset %" PRId64 ", step size %d)\n", |
d3199a31 | 3783 | data.n, data.write ? "write" : "read", data.bufsize, data.nrreq, |
83de9be0 | 3784 | data.offset, data.step); |
55d539c8 KW |
3785 | if (flush_interval) { |
3786 | printf("Sending flush every %d requests\n", flush_interval); | |
3787 | } | |
b6133b8c KW |
3788 | |
3789 | data.buf = blk_blockalign(blk, data.nrreq * data.bufsize); | |
b6495fa8 KW |
3790 | memset(data.buf, pattern, data.nrreq * data.bufsize); |
3791 | ||
b6133b8c KW |
3792 | data.qiov = g_new(QEMUIOVector, data.nrreq); |
3793 | for (i = 0; i < data.nrreq; i++) { | |
3794 | qemu_iovec_init(&data.qiov[i], 1); | |
3795 | qemu_iovec_add(&data.qiov[i], | |
3796 | data.buf + i * data.bufsize, data.bufsize); | |
3797 | } | |
3798 | ||
3799 | gettimeofday(&t1, NULL); | |
3800 | bench_cb(&data, 0); | |
3801 | ||
3802 | while (data.n > 0) { | |
3803 | main_loop_wait(false); | |
3804 | } | |
3805 | gettimeofday(&t2, NULL); | |
3806 | ||
3807 | printf("Run completed in %3.3f seconds.\n", | |
3808 | (t2.tv_sec - t1.tv_sec) | |
3809 | + ((double)(t2.tv_usec - t1.tv_usec) / 1000000)); | |
3810 | ||
3811 | out: | |
3812 | qemu_vfree(data.buf); | |
3813 | blk_unref(blk); | |
3814 | ||
3815 | if (ret) { | |
86ce1f6e RS |
3816 | return 1; |
3817 | } | |
3818 | return 0; | |
3819 | } | |
3820 | ||
3821 | #define C_BS 01 | |
3822 | #define C_COUNT 02 | |
3823 | #define C_IF 04 | |
3824 | #define C_OF 010 | |
f7c15533 | 3825 | #define C_SKIP 020 |
86ce1f6e RS |
3826 | |
3827 | struct DdInfo { | |
3828 | unsigned int flags; | |
3829 | int64_t count; | |
3830 | }; | |
3831 | ||
3832 | struct DdIo { | |
3833 | int bsz; /* Block size */ | |
3834 | char *filename; | |
3835 | uint8_t *buf; | |
f7c15533 | 3836 | int64_t offset; |
86ce1f6e RS |
3837 | }; |
3838 | ||
3839 | struct DdOpts { | |
3840 | const char *name; | |
3841 | int (*f)(const char *, struct DdIo *, struct DdIo *, struct DdInfo *); | |
3842 | unsigned int flag; | |
3843 | }; | |
3844 | ||
3845 | static int img_dd_bs(const char *arg, | |
3846 | struct DdIo *in, struct DdIo *out, | |
3847 | struct DdInfo *dd) | |
3848 | { | |
86ce1f6e RS |
3849 | int64_t res; |
3850 | ||
606caa0a | 3851 | res = cvtnum(arg); |
86ce1f6e | 3852 | |
606caa0a | 3853 | if (res <= 0 || res > INT_MAX) { |
86ce1f6e RS |
3854 | error_report("invalid number: '%s'", arg); |
3855 | return 1; | |
3856 | } | |
3857 | in->bsz = out->bsz = res; | |
3858 | ||
3859 | return 0; | |
3860 | } | |
3861 | ||
3862 | static int img_dd_count(const char *arg, | |
3863 | struct DdIo *in, struct DdIo *out, | |
3864 | struct DdInfo *dd) | |
3865 | { | |
606caa0a | 3866 | dd->count = cvtnum(arg); |
86ce1f6e | 3867 | |
606caa0a | 3868 | if (dd->count < 0) { |
86ce1f6e RS |
3869 | error_report("invalid number: '%s'", arg); |
3870 | return 1; | |
3871 | } | |
3872 | ||
3873 | return 0; | |
3874 | } | |
3875 | ||
3876 | static int img_dd_if(const char *arg, | |
3877 | struct DdIo *in, struct DdIo *out, | |
3878 | struct DdInfo *dd) | |
3879 | { | |
3880 | in->filename = g_strdup(arg); | |
3881 | ||
3882 | return 0; | |
3883 | } | |
3884 | ||
3885 | static int img_dd_of(const char *arg, | |
3886 | struct DdIo *in, struct DdIo *out, | |
3887 | struct DdInfo *dd) | |
3888 | { | |
3889 | out->filename = g_strdup(arg); | |
3890 | ||
3891 | return 0; | |
3892 | } | |
3893 | ||
f7c15533 RS |
3894 | static int img_dd_skip(const char *arg, |
3895 | struct DdIo *in, struct DdIo *out, | |
3896 | struct DdInfo *dd) | |
3897 | { | |
606caa0a | 3898 | in->offset = cvtnum(arg); |
f7c15533 | 3899 | |
606caa0a | 3900 | if (in->offset < 0) { |
f7c15533 RS |
3901 | error_report("invalid number: '%s'", arg); |
3902 | return 1; | |
3903 | } | |
3904 | ||
3905 | return 0; | |
3906 | } | |
3907 | ||
86ce1f6e RS |
3908 | static int img_dd(int argc, char **argv) |
3909 | { | |
3910 | int ret = 0; | |
3911 | char *arg = NULL; | |
3912 | char *tmp; | |
3913 | BlockDriver *drv = NULL, *proto_drv = NULL; | |
3914 | BlockBackend *blk1 = NULL, *blk2 = NULL; | |
3915 | QemuOpts *opts = NULL; | |
3916 | QemuOptsList *create_opts = NULL; | |
3917 | Error *local_err = NULL; | |
3918 | bool image_opts = false; | |
3919 | int c, i; | |
3920 | const char *out_fmt = "raw"; | |
3921 | const char *fmt = NULL; | |
3922 | int64_t size = 0; | |
3923 | int64_t block_count = 0, out_pos, in_pos; | |
3924 | struct DdInfo dd = { | |
3925 | .flags = 0, | |
3926 | .count = 0, | |
3927 | }; | |
3928 | struct DdIo in = { | |
3929 | .bsz = 512, /* Block size is by default 512 bytes */ | |
3930 | .filename = NULL, | |
f7c15533 RS |
3931 | .buf = NULL, |
3932 | .offset = 0 | |
86ce1f6e RS |
3933 | }; |
3934 | struct DdIo out = { | |
3935 | .bsz = 512, | |
3936 | .filename = NULL, | |
f7c15533 RS |
3937 | .buf = NULL, |
3938 | .offset = 0 | |
86ce1f6e RS |
3939 | }; |
3940 | ||
3941 | const struct DdOpts options[] = { | |
3942 | { "bs", img_dd_bs, C_BS }, | |
3943 | { "count", img_dd_count, C_COUNT }, | |
3944 | { "if", img_dd_if, C_IF }, | |
3945 | { "of", img_dd_of, C_OF }, | |
f7c15533 | 3946 | { "skip", img_dd_skip, C_SKIP }, |
86ce1f6e RS |
3947 | { NULL, NULL, 0 } |
3948 | }; | |
3949 | const struct option long_options[] = { | |
3950 | { "help", no_argument, 0, 'h'}, | |
3951 | { "image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, | |
3952 | { 0, 0, 0, 0 } | |
3953 | }; | |
3954 | ||
3955 | while ((c = getopt_long(argc, argv, "hf:O:", long_options, NULL))) { | |
3956 | if (c == EOF) { | |
3957 | break; | |
3958 | } | |
3959 | switch (c) { | |
3960 | case 'O': | |
3961 | out_fmt = optarg; | |
3962 | break; | |
3963 | case 'f': | |
3964 | fmt = optarg; | |
3965 | break; | |
3966 | case '?': | |
3967 | error_report("Try 'qemu-img --help' for more information."); | |
3968 | ret = -1; | |
3969 | goto out; | |
3970 | case 'h': | |
3971 | help(); | |
3972 | break; | |
3973 | case OPTION_IMAGE_OPTS: | |
3974 | image_opts = true; | |
3975 | break; | |
3976 | } | |
3977 | } | |
3978 | ||
3979 | for (i = optind; i < argc; i++) { | |
3980 | int j; | |
3981 | arg = g_strdup(argv[i]); | |
3982 | ||
3983 | tmp = strchr(arg, '='); | |
3984 | if (tmp == NULL) { | |
3985 | error_report("unrecognized operand %s", arg); | |
3986 | ret = -1; | |
3987 | goto out; | |
3988 | } | |
3989 | ||
3990 | *tmp++ = '\0'; | |
3991 | ||
3992 | for (j = 0; options[j].name != NULL; j++) { | |
3993 | if (!strcmp(arg, options[j].name)) { | |
3994 | break; | |
3995 | } | |
3996 | } | |
3997 | if (options[j].name == NULL) { | |
3998 | error_report("unrecognized operand %s", arg); | |
3999 | ret = -1; | |
4000 | goto out; | |
4001 | } | |
4002 | ||
4003 | if (options[j].f(tmp, &in, &out, &dd) != 0) { | |
4004 | ret = -1; | |
4005 | goto out; | |
4006 | } | |
4007 | dd.flags |= options[j].flag; | |
4008 | g_free(arg); | |
4009 | arg = NULL; | |
4010 | } | |
4011 | ||
4012 | if (!(dd.flags & C_IF && dd.flags & C_OF)) { | |
4013 | error_report("Must specify both input and output files"); | |
4014 | ret = -1; | |
4015 | goto out; | |
4016 | } | |
4017 | blk1 = img_open(image_opts, in.filename, fmt, 0, false, false); | |
4018 | ||
4019 | if (!blk1) { | |
4020 | ret = -1; | |
4021 | goto out; | |
4022 | } | |
4023 | ||
4024 | drv = bdrv_find_format(out_fmt); | |
4025 | if (!drv) { | |
4026 | error_report("Unknown file format"); | |
4027 | ret = -1; | |
4028 | goto out; | |
4029 | } | |
4030 | proto_drv = bdrv_find_protocol(out.filename, true, &local_err); | |
4031 | ||
4032 | if (!proto_drv) { | |
4033 | error_report_err(local_err); | |
4034 | ret = -1; | |
4035 | goto out; | |
4036 | } | |
4037 | if (!drv->create_opts) { | |
4038 | error_report("Format driver '%s' does not support image creation", | |
4039 | drv->format_name); | |
4040 | ret = -1; | |
4041 | goto out; | |
4042 | } | |
4043 | if (!proto_drv->create_opts) { | |
4044 | error_report("Protocol driver '%s' does not support image creation", | |
4045 | proto_drv->format_name); | |
4046 | ret = -1; | |
4047 | goto out; | |
4048 | } | |
4049 | create_opts = qemu_opts_append(create_opts, drv->create_opts); | |
4050 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
4051 | ||
4052 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); | |
4053 | ||
4054 | size = blk_getlength(blk1); | |
4055 | if (size < 0) { | |
4056 | error_report("Failed to get size for '%s'", in.filename); | |
4057 | ret = -1; | |
4058 | goto out; | |
4059 | } | |
4060 | ||
4061 | if (dd.flags & C_COUNT && dd.count <= INT64_MAX / in.bsz && | |
4062 | dd.count * in.bsz < size) { | |
4063 | size = dd.count * in.bsz; | |
4064 | } | |
4065 | ||
f7c15533 RS |
4066 | /* Overflow means the specified offset is beyond input image's size */ |
4067 | if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz || | |
4068 | size < in.bsz * in.offset)) { | |
4069 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, 0, &error_abort); | |
4070 | } else { | |
4071 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, | |
4072 | size - in.bsz * in.offset, &error_abort); | |
4073 | } | |
86ce1f6e RS |
4074 | |
4075 | ret = bdrv_create(drv, out.filename, opts, &local_err); | |
4076 | if (ret < 0) { | |
4077 | error_reportf_err(local_err, | |
4078 | "%s: error while creating output image: ", | |
4079 | out.filename); | |
4080 | ret = -1; | |
4081 | goto out; | |
4082 | } | |
4083 | ||
4084 | blk2 = img_open(image_opts, out.filename, out_fmt, BDRV_O_RDWR, | |
4085 | false, false); | |
4086 | ||
4087 | if (!blk2) { | |
4088 | ret = -1; | |
4089 | goto out; | |
4090 | } | |
4091 | ||
f7c15533 RS |
4092 | if (dd.flags & C_SKIP && (in.offset > INT64_MAX / in.bsz || |
4093 | size < in.offset * in.bsz)) { | |
4094 | /* We give a warning if the skip option is bigger than the input | |
4095 | * size and create an empty output disk image (i.e. like dd(1)). | |
4096 | */ | |
4097 | error_report("%s: cannot skip to specified offset", in.filename); | |
4098 | in_pos = size; | |
4099 | } else { | |
4100 | in_pos = in.offset * in.bsz; | |
4101 | } | |
4102 | ||
86ce1f6e RS |
4103 | in.buf = g_new(uint8_t, in.bsz); |
4104 | ||
f7c15533 | 4105 | for (out_pos = 0; in_pos < size; block_count++) { |
86ce1f6e RS |
4106 | int in_ret, out_ret; |
4107 | ||
4108 | if (in_pos + in.bsz > size) { | |
4109 | in_ret = blk_pread(blk1, in_pos, in.buf, size - in_pos); | |
4110 | } else { | |
4111 | in_ret = blk_pread(blk1, in_pos, in.buf, in.bsz); | |
4112 | } | |
4113 | if (in_ret < 0) { | |
4114 | error_report("error while reading from input image file: %s", | |
4115 | strerror(-in_ret)); | |
4116 | ret = -1; | |
4117 | goto out; | |
4118 | } | |
4119 | in_pos += in_ret; | |
4120 | ||
4121 | out_ret = blk_pwrite(blk2, out_pos, in.buf, in_ret, 0); | |
4122 | ||
4123 | if (out_ret < 0) { | |
4124 | error_report("error while writing to output image file: %s", | |
4125 | strerror(-out_ret)); | |
4126 | ret = -1; | |
4127 | goto out; | |
4128 | } | |
4129 | out_pos += out_ret; | |
4130 | } | |
4131 | ||
4132 | out: | |
4133 | g_free(arg); | |
4134 | qemu_opts_del(opts); | |
4135 | qemu_opts_free(create_opts); | |
4136 | blk_unref(blk1); | |
4137 | blk_unref(blk2); | |
4138 | g_free(in.filename); | |
4139 | g_free(out.filename); | |
4140 | g_free(in.buf); | |
4141 | g_free(out.buf); | |
4142 | ||
4143 | if (ret) { | |
b6133b8c KW |
4144 | return 1; |
4145 | } | |
4146 | return 0; | |
4147 | } | |
4148 | ||
4149 | ||
c227f099 | 4150 | static const img_cmd_t img_cmds[] = { |
153859be SB |
4151 | #define DEF(option, callback, arg_string) \ |
4152 | { option, callback }, | |
4153 | #include "qemu-img-cmds.h" | |
4154 | #undef DEF | |
4155 | #undef GEN_DOCS | |
4156 | { NULL, NULL, }, | |
4157 | }; | |
4158 | ||
ea2384d3 FB |
4159 | int main(int argc, char **argv) |
4160 | { | |
c227f099 | 4161 | const img_cmd_t *cmd; |
153859be | 4162 | const char *cmdname; |
2f78e491 | 4163 | Error *local_error = NULL; |
06a1e0c1 | 4164 | char *trace_file = NULL; |
7db1689c | 4165 | int c; |
7db1689c JC |
4166 | static const struct option long_options[] = { |
4167 | {"help", no_argument, 0, 'h'}, | |
10985131 | 4168 | {"version", no_argument, 0, 'V'}, |
06a1e0c1 | 4169 | {"trace", required_argument, NULL, 'T'}, |
7db1689c JC |
4170 | {0, 0, 0, 0} |
4171 | }; | |
ea2384d3 | 4172 | |
526eda14 MK |
4173 | #ifdef CONFIG_POSIX |
4174 | signal(SIGPIPE, SIG_IGN); | |
4175 | #endif | |
4176 | ||
fe4db84d | 4177 | module_call_init(MODULE_INIT_TRACE); |
53f76e58 | 4178 | error_set_progname(argv[0]); |
10f5bff6 | 4179 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 4180 | |
2f78e491 | 4181 | if (qemu_init_main_loop(&local_error)) { |
565f65d2 | 4182 | error_report_err(local_error); |
2f78e491 CN |
4183 | exit(EXIT_FAILURE); |
4184 | } | |
4185 | ||
e8f2d272 | 4186 | qcrypto_init(&error_fatal); |
c2297088 | 4187 | |
064097d9 | 4188 | module_call_init(MODULE_INIT_QOM); |
ea2384d3 | 4189 | bdrv_init(); |
ac1307ab FZ |
4190 | if (argc < 2) { |
4191 | error_exit("Not enough arguments"); | |
4192 | } | |
153859be | 4193 | |
3babeb15 | 4194 | qemu_add_opts(&qemu_object_opts); |
eb769f74 | 4195 | qemu_add_opts(&qemu_source_opts); |
06a1e0c1 | 4196 | qemu_add_opts(&qemu_trace_opts); |
3babeb15 | 4197 | |
06a1e0c1 | 4198 | while ((c = getopt_long(argc, argv, "+hVT:", long_options, NULL)) != -1) { |
10985131 DL |
4199 | switch (c) { |
4200 | case 'h': | |
4201 | help(); | |
4202 | return 0; | |
4203 | case 'V': | |
4204 | printf(QEMU_IMG_VERSION); | |
4205 | return 0; | |
06a1e0c1 DL |
4206 | case 'T': |
4207 | g_free(trace_file); | |
4208 | trace_file = trace_opt_parse(optarg); | |
4209 | break; | |
153859be | 4210 | } |
ea2384d3 | 4211 | } |
153859be | 4212 | |
10985131 | 4213 | cmdname = argv[optind]; |
7db1689c | 4214 | |
10985131 DL |
4215 | /* reset getopt_long scanning */ |
4216 | argc -= optind; | |
4217 | if (argc < 1) { | |
5f6979cb JC |
4218 | return 0; |
4219 | } | |
10985131 | 4220 | argv += optind; |
cfef6a45 | 4221 | optind = 0; |
10985131 | 4222 | |
06a1e0c1 DL |
4223 | if (!trace_init_backends()) { |
4224 | exit(1); | |
4225 | } | |
4226 | trace_init_file(trace_file); | |
4227 | qemu_set_log(LOG_TRACE); | |
4228 | ||
10985131 DL |
4229 | /* find the command */ |
4230 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { | |
4231 | if (!strcmp(cmdname, cmd->name)) { | |
4232 | return cmd->handler(argc, argv); | |
4233 | } | |
4234 | } | |
7db1689c | 4235 | |
153859be | 4236 | /* not found */ |
ac1307ab | 4237 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 4238 | } |