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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 | */ | |
c054b3fd BC |
24 | #include "qapi-visit.h" |
25 | #include "qapi/qmp-output-visitor.h" | |
7b1b5d19 | 26 | #include "qapi/qmp/qjson.h" |
faf07963 | 27 | #include "qemu-common.h" |
1de7afc9 PB |
28 | #include "qemu/option.h" |
29 | #include "qemu/error-report.h" | |
30 | #include "qemu/osdep.h" | |
9c17d615 | 31 | #include "sysemu/sysemu.h" |
26f54e9a | 32 | #include "sysemu/block-backend.h" |
737e150e | 33 | #include "block/block_int.h" |
d4a3238a | 34 | #include "block/blockjob.h" |
f364ec65 | 35 | #include "block/qapi.h" |
c054b3fd | 36 | #include <getopt.h> |
e8445331 | 37 | |
61979a6a | 38 | #define QEMU_IMG_VERSION "qemu-img version " QEMU_VERSION QEMU_PKGVERSION \ |
5f6979cb JC |
39 | ", Copyright (c) 2004-2008 Fabrice Bellard\n" |
40 | ||
c227f099 | 41 | typedef struct img_cmd_t { |
153859be SB |
42 | const char *name; |
43 | int (*handler)(int argc, char **argv); | |
c227f099 | 44 | } img_cmd_t; |
153859be | 45 | |
8599ea4c FS |
46 | enum { |
47 | OPTION_OUTPUT = 256, | |
48 | OPTION_BACKING_CHAIN = 257, | |
49 | }; | |
50 | ||
51 | typedef enum OutputFormat { | |
52 | OFORMAT_JSON, | |
53 | OFORMAT_HUMAN, | |
54 | } OutputFormat; | |
55 | ||
137519ce | 56 | /* Default to cache=writeback as data integrity is not important for qemu-tcg. */ |
adfe078e | 57 | #define BDRV_O_FLAGS BDRV_O_CACHE_WB |
661a0f71 | 58 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 59 | |
00c6d403 | 60 | static void format_print(void *opaque, const char *name) |
ea2384d3 | 61 | { |
00c6d403 | 62 | printf(" %s", name); |
ea2384d3 FB |
63 | } |
64 | ||
ac1307ab FZ |
65 | static void QEMU_NORETURN GCC_FMT_ATTR(1, 2) error_exit(const char *fmt, ...) |
66 | { | |
67 | va_list ap; | |
68 | ||
69 | error_printf("qemu-img: "); | |
70 | ||
71 | va_start(ap, fmt); | |
72 | error_vprintf(fmt, ap); | |
73 | va_end(ap); | |
74 | ||
75 | error_printf("\nTry 'qemu-img --help' for more information\n"); | |
76 | exit(EXIT_FAILURE); | |
77 | } | |
78 | ||
d2c639d6 | 79 | /* Please keep in synch with qemu-img.texi */ |
ac1307ab | 80 | static void QEMU_NORETURN help(void) |
ea2384d3 | 81 | { |
e00291c0 | 82 | const char *help_msg = |
5f6979cb | 83 | QEMU_IMG_VERSION |
3f020d70 | 84 | "usage: qemu-img command [command options]\n" |
85 | "QEMU disk image utility\n" | |
86 | "\n" | |
87 | "Command syntax:\n" | |
153859be SB |
88 | #define DEF(option, callback, arg_string) \ |
89 | " " arg_string "\n" | |
90 | #include "qemu-img-cmds.h" | |
91 | #undef DEF | |
92 | #undef GEN_DOCS | |
3f020d70 | 93 | "\n" |
94 | "Command parameters:\n" | |
95 | " 'filename' is a disk image filename\n" | |
96 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" | |
661a0f71 | 97 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
98 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
99 | " 'directsync' and 'unsafe' (default for convert)\n" | |
bb87fdf8 SH |
100 | " 'src_cache' is the cache mode used to read input disk images, the valid\n" |
101 | " options are the same as for the 'cache' option\n" | |
3f020d70 | 102 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
5e00984a KW |
103 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M),\n" |
104 | " 'T' (terabyte, 1024G), 'P' (petabyte, 1024T) and 'E' (exabyte, 1024P) are\n" | |
105 | " supported. 'b' is ignored.\n" | |
3f020d70 | 106 | " 'output_filename' is the destination disk image filename\n" |
107 | " 'output_fmt' is the destination format\n" | |
108 | " 'options' is a comma separated list of format specific options in a\n" | |
109 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
110 | " used format\n" | |
ef80654d WX |
111 | " 'snapshot_param' is param used for internal snapshot, format\n" |
112 | " is 'snapshot.id=[ID],snapshot.name=[NAME]', or\n" | |
113 | " '[ID_OR_NAME]'\n" | |
114 | " 'snapshot_id_or_name' is deprecated, use 'snapshot_param'\n" | |
115 | " instead\n" | |
3f020d70 | 116 | " '-c' indicates that target image must be compressed (qcow format only)\n" |
117 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
118 | " match exactly. The image doesn't need a working backing file before\n" | |
119 | " rebasing in this case (useful for renaming the backing file)\n" | |
120 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 121 | " '-p' show progress of command (only certain commands)\n" |
f382d43a | 122 | " '-q' use Quiet mode - do not print any output (except errors)\n" |
11b6699a PL |
123 | " '-S' indicates the consecutive number of bytes (defaults to 4k) that must\n" |
124 | " contain only zeros for qemu-img to create a sparse image during\n" | |
125 | " conversion. If the number of bytes is 0, the source will not be scanned for\n" | |
126 | " unallocated or zero sectors, and the destination image will always be\n" | |
127 | " fully allocated\n" | |
c054b3fd | 128 | " '--output' takes the format in which the output must be done (human or json)\n" |
b2e10493 AD |
129 | " '-n' skips the target volume creation (useful if the volume is created\n" |
130 | " prior to running qemu-img)\n" | |
3f020d70 | 131 | "\n" |
4534ff54 KW |
132 | "Parameters to check subcommand:\n" |
133 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
134 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
135 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 136 | " hiding corruption that has already occurred.\n" |
4534ff54 | 137 | "\n" |
3f020d70 | 138 | "Parameters to snapshot subcommand:\n" |
139 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
140 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
141 | " '-c' creates a snapshot\n" | |
142 | " '-d' deletes a snapshot\n" | |
d14ed18c MR |
143 | " '-l' lists all snapshots in the given image\n" |
144 | "\n" | |
145 | "Parameters to compare subcommand:\n" | |
146 | " '-f' first image format\n" | |
147 | " '-F' second image format\n" | |
148 | " '-s' run in Strict mode - fail on different image size or sector allocation\n"; | |
e00291c0 PB |
149 | |
150 | printf("%s\nSupported formats:", help_msg); | |
00c6d403 | 151 | bdrv_iterate_format(format_print, NULL); |
ea2384d3 | 152 | printf("\n"); |
ac1307ab | 153 | exit(EXIT_SUCCESS); |
ea2384d3 FB |
154 | } |
155 | ||
7c30f657 | 156 | static int GCC_FMT_ATTR(2, 3) qprintf(bool quiet, const char *fmt, ...) |
f382d43a MR |
157 | { |
158 | int ret = 0; | |
159 | if (!quiet) { | |
160 | va_list args; | |
161 | va_start(args, fmt); | |
162 | ret = vprintf(fmt, args); | |
163 | va_end(args); | |
164 | } | |
165 | return ret; | |
166 | } | |
167 | ||
ea2384d3 FB |
168 | #if defined(WIN32) |
169 | /* XXX: put correct support for win32 */ | |
170 | static int read_password(char *buf, int buf_size) | |
171 | { | |
172 | int c, i; | |
fdcf6e65 | 173 | |
ea2384d3 FB |
174 | printf("Password: "); |
175 | fflush(stdout); | |
176 | i = 0; | |
177 | for(;;) { | |
178 | c = getchar(); | |
fdcf6e65 CG |
179 | if (c < 0) { |
180 | buf[i] = '\0'; | |
181 | return -1; | |
182 | } else if (c == '\n') { | |
ea2384d3 | 183 | break; |
fdcf6e65 | 184 | } else if (i < (buf_size - 1)) { |
ea2384d3 | 185 | buf[i++] = c; |
fdcf6e65 | 186 | } |
ea2384d3 FB |
187 | } |
188 | buf[i] = '\0'; | |
189 | return 0; | |
190 | } | |
191 | ||
192 | #else | |
193 | ||
194 | #include <termios.h> | |
195 | ||
196 | static struct termios oldtty; | |
197 | ||
198 | static void term_exit(void) | |
199 | { | |
200 | tcsetattr (0, TCSANOW, &oldtty); | |
201 | } | |
202 | ||
203 | static void term_init(void) | |
204 | { | |
205 | struct termios tty; | |
206 | ||
207 | tcgetattr (0, &tty); | |
208 | oldtty = tty; | |
209 | ||
210 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
211 | |INLCR|IGNCR|ICRNL|IXON); | |
212 | tty.c_oflag |= OPOST; | |
213 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
214 | tty.c_cflag &= ~(CSIZE|PARENB); | |
215 | tty.c_cflag |= CS8; | |
216 | tty.c_cc[VMIN] = 1; | |
217 | tty.c_cc[VTIME] = 0; | |
3b46e624 | 218 | |
ea2384d3 FB |
219 | tcsetattr (0, TCSANOW, &tty); |
220 | ||
221 | atexit(term_exit); | |
222 | } | |
223 | ||
3f379ab1 | 224 | static int read_password(char *buf, int buf_size) |
ea2384d3 FB |
225 | { |
226 | uint8_t ch; | |
227 | int i, ret; | |
228 | ||
229 | printf("password: "); | |
230 | fflush(stdout); | |
231 | term_init(); | |
232 | i = 0; | |
233 | for(;;) { | |
234 | ret = read(0, &ch, 1); | |
235 | if (ret == -1) { | |
236 | if (errno == EAGAIN || errno == EINTR) { | |
237 | continue; | |
238 | } else { | |
ea2384d3 FB |
239 | break; |
240 | } | |
241 | } else if (ret == 0) { | |
242 | ret = -1; | |
243 | break; | |
244 | } else { | |
245 | if (ch == '\r') { | |
246 | ret = 0; | |
247 | break; | |
248 | } | |
249 | if (i < (buf_size - 1)) | |
250 | buf[i++] = ch; | |
251 | } | |
252 | } | |
253 | term_exit(); | |
254 | buf[i] = '\0'; | |
255 | printf("\n"); | |
256 | return ret; | |
257 | } | |
258 | #endif | |
259 | ||
4ac8aacd JS |
260 | static int print_block_option_help(const char *filename, const char *fmt) |
261 | { | |
262 | BlockDriver *drv, *proto_drv; | |
83d0521a | 263 | QemuOptsList *create_opts = NULL; |
b65a5e12 | 264 | Error *local_err = NULL; |
4ac8aacd JS |
265 | |
266 | /* Find driver and parse its options */ | |
267 | drv = bdrv_find_format(fmt); | |
268 | if (!drv) { | |
15654a6d | 269 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
270 | return 1; |
271 | } | |
272 | ||
c282e1fd | 273 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
a283cb6e | 274 | if (filename) { |
b65a5e12 | 275 | proto_drv = bdrv_find_protocol(filename, true, &local_err); |
a283cb6e | 276 | if (!proto_drv) { |
b65a5e12 HR |
277 | qerror_report_err(local_err); |
278 | error_free(local_err); | |
83d0521a | 279 | qemu_opts_free(create_opts); |
a283cb6e KW |
280 | return 1; |
281 | } | |
c282e1fd | 282 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); |
a283cb6e KW |
283 | } |
284 | ||
83d0521a CL |
285 | qemu_opts_print_help(create_opts); |
286 | qemu_opts_free(create_opts); | |
4ac8aacd JS |
287 | return 0; |
288 | } | |
289 | ||
7e7d56d9 MA |
290 | static BlockBackend *img_open(const char *id, const char *filename, |
291 | const char *fmt, int flags, | |
292 | bool require_io, bool quiet) | |
75c23805 | 293 | { |
7e7d56d9 | 294 | BlockBackend *blk; |
75c23805 | 295 | BlockDriverState *bs; |
75c23805 | 296 | char password[256]; |
34b5d2c6 | 297 | Error *local_err = NULL; |
5bd31326 | 298 | QDict *options = NULL; |
ad717139 | 299 | |
75c23805 | 300 | if (fmt) { |
5bd31326 HR |
301 | options = qdict_new(); |
302 | qdict_put(options, "driver", qstring_from_str(fmt)); | |
75c23805 | 303 | } |
b9eaf9ec | 304 | |
5bd31326 HR |
305 | blk = blk_new_open(id, filename, NULL, options, flags, &local_err); |
306 | if (!blk) { | |
34b5d2c6 HR |
307 | error_report("Could not open '%s': %s", filename, |
308 | error_get_pretty(local_err)); | |
309 | error_free(local_err); | |
c2abccec | 310 | goto fail; |
75c23805 | 311 | } |
b9eaf9ec | 312 | |
5bd31326 | 313 | bs = blk_bs(blk); |
f0536bb8 | 314 | if (bdrv_is_encrypted(bs) && require_io) { |
f382d43a | 315 | qprintf(quiet, "Disk image '%s' is encrypted.\n", filename); |
c2abccec | 316 | if (read_password(password, sizeof(password)) < 0) { |
15654a6d | 317 | error_report("No password given"); |
c2abccec MK |
318 | goto fail; |
319 | } | |
320 | if (bdrv_set_key(bs, password) < 0) { | |
15654a6d | 321 | error_report("invalid password"); |
c2abccec MK |
322 | goto fail; |
323 | } | |
75c23805 | 324 | } |
7e7d56d9 | 325 | return blk; |
c2abccec | 326 | fail: |
7e7d56d9 | 327 | blk_unref(blk); |
c2abccec | 328 | return NULL; |
75c23805 FB |
329 | } |
330 | ||
83d0521a | 331 | static int add_old_style_options(const char *fmt, QemuOpts *opts, |
eec77d9e JS |
332 | const char *base_filename, |
333 | const char *base_fmt) | |
efa84d43 | 334 | { |
efa84d43 | 335 | if (base_filename) { |
83d0521a | 336 | if (qemu_opt_set(opts, BLOCK_OPT_BACKING_FILE, base_filename)) { |
15654a6d JS |
337 | error_report("Backing file not supported for file format '%s'", |
338 | fmt); | |
c2abccec | 339 | return -1; |
efa84d43 KW |
340 | } |
341 | } | |
342 | if (base_fmt) { | |
83d0521a | 343 | if (qemu_opt_set(opts, BLOCK_OPT_BACKING_FMT, base_fmt)) { |
15654a6d JS |
344 | error_report("Backing file format not supported for file " |
345 | "format '%s'", fmt); | |
c2abccec | 346 | return -1; |
efa84d43 KW |
347 | } |
348 | } | |
c2abccec | 349 | return 0; |
efa84d43 KW |
350 | } |
351 | ||
ea2384d3 FB |
352 | static int img_create(int argc, char **argv) |
353 | { | |
a9300911 | 354 | int c; |
1da7cfbd | 355 | uint64_t img_size = -1; |
ea2384d3 | 356 | const char *fmt = "raw"; |
9230eaf6 | 357 | const char *base_fmt = NULL; |
ea2384d3 FB |
358 | const char *filename; |
359 | const char *base_filename = NULL; | |
9ea2ea71 | 360 | char *options = NULL; |
9b37525a | 361 | Error *local_err = NULL; |
f382d43a | 362 | bool quiet = false; |
3b46e624 | 363 | |
ea2384d3 | 364 | for(;;) { |
f382d43a | 365 | c = getopt(argc, argv, "F:b:f:he6o:q"); |
b8fb60da | 366 | if (c == -1) { |
ea2384d3 | 367 | break; |
b8fb60da | 368 | } |
ea2384d3 | 369 | switch(c) { |
ef87394c | 370 | case '?': |
ea2384d3 FB |
371 | case 'h': |
372 | help(); | |
373 | break; | |
9230eaf6 AL |
374 | case 'F': |
375 | base_fmt = optarg; | |
376 | break; | |
ea2384d3 FB |
377 | case 'b': |
378 | base_filename = optarg; | |
379 | break; | |
380 | case 'f': | |
381 | fmt = optarg; | |
382 | break; | |
383 | case 'e': | |
9d42e15d | 384 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 385 | "encryption\' instead!"); |
77386bf6 | 386 | goto fail; |
d8871c5a | 387 | case '6': |
9d42e15d | 388 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 389 | "compat6\' instead!"); |
77386bf6 | 390 | goto fail; |
9ea2ea71 | 391 | case 'o': |
77386bf6 KW |
392 | if (!is_valid_option_list(optarg)) { |
393 | error_report("Invalid option list: %s", optarg); | |
394 | goto fail; | |
395 | } | |
396 | if (!options) { | |
397 | options = g_strdup(optarg); | |
398 | } else { | |
399 | char *old_options = options; | |
400 | options = g_strdup_printf("%s,%s", options, optarg); | |
401 | g_free(old_options); | |
402 | } | |
9ea2ea71 | 403 | break; |
f382d43a MR |
404 | case 'q': |
405 | quiet = true; | |
406 | break; | |
ea2384d3 FB |
407 | } |
408 | } | |
9230eaf6 | 409 | |
b50cbabc | 410 | /* Get the filename */ |
a283cb6e KW |
411 | filename = (optind < argc) ? argv[optind] : NULL; |
412 | if (options && has_help_option(options)) { | |
413 | g_free(options); | |
414 | return print_block_option_help(filename, fmt); | |
415 | } | |
416 | ||
b8fb60da | 417 | if (optind >= argc) { |
ac1307ab | 418 | error_exit("Expecting image file name"); |
b8fb60da | 419 | } |
a283cb6e | 420 | optind++; |
b50cbabc | 421 | |
1da7cfbd JS |
422 | /* Get image size, if specified */ |
423 | if (optind < argc) { | |
70b4f4bb | 424 | int64_t sval; |
e36b3695 MA |
425 | char *end; |
426 | sval = strtosz_suffix(argv[optind++], &end, STRTOSZ_DEFSUFFIX_B); | |
427 | if (sval < 0 || *end) { | |
79443397 LG |
428 | if (sval == -ERANGE) { |
429 | error_report("Image size must be less than 8 EiB!"); | |
430 | } else { | |
431 | error_report("Invalid image size specified! You may use k, M, " | |
5e00984a KW |
432 | "G, T, P or E suffixes for "); |
433 | error_report("kilobytes, megabytes, gigabytes, terabytes, " | |
434 | "petabytes and exabytes."); | |
79443397 | 435 | } |
77386bf6 | 436 | goto fail; |
1da7cfbd JS |
437 | } |
438 | img_size = (uint64_t)sval; | |
439 | } | |
fc11eb26 | 440 | if (optind != argc) { |
ac1307ab | 441 | error_exit("Unexpected argument: %s", argv[optind]); |
fc11eb26 | 442 | } |
1da7cfbd | 443 | |
9b37525a | 444 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
f382d43a | 445 | options, img_size, BDRV_O_FLAGS, &local_err, quiet); |
84d18f06 | 446 | if (local_err) { |
b70d8c23 | 447 | error_report("%s: %s", filename, error_get_pretty(local_err)); |
9b37525a | 448 | error_free(local_err); |
77386bf6 | 449 | goto fail; |
c2abccec | 450 | } |
a9300911 | 451 | |
77386bf6 | 452 | g_free(options); |
ea2384d3 | 453 | return 0; |
77386bf6 KW |
454 | |
455 | fail: | |
456 | g_free(options); | |
457 | return 1; | |
ea2384d3 FB |
458 | } |
459 | ||
f382d43a | 460 | static void dump_json_image_check(ImageCheck *check, bool quiet) |
8599ea4c | 461 | { |
4399c438 | 462 | Error *local_err = NULL; |
8599ea4c FS |
463 | QString *str; |
464 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
465 | QObject *obj; | |
466 | visit_type_ImageCheck(qmp_output_get_visitor(ov), | |
4399c438 | 467 | &check, NULL, &local_err); |
8599ea4c FS |
468 | obj = qmp_output_get_qobject(ov); |
469 | str = qobject_to_json_pretty(obj); | |
470 | assert(str != NULL); | |
f382d43a | 471 | qprintf(quiet, "%s\n", qstring_get_str(str)); |
8599ea4c FS |
472 | qobject_decref(obj); |
473 | qmp_output_visitor_cleanup(ov); | |
474 | QDECREF(str); | |
475 | } | |
476 | ||
f382d43a | 477 | static void dump_human_image_check(ImageCheck *check, bool quiet) |
8599ea4c FS |
478 | { |
479 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
f382d43a | 480 | qprintf(quiet, "No errors were found on the image.\n"); |
8599ea4c FS |
481 | } else { |
482 | if (check->corruptions) { | |
f382d43a MR |
483 | qprintf(quiet, "\n%" PRId64 " errors were found on the image.\n" |
484 | "Data may be corrupted, or further writes to the image " | |
485 | "may corrupt it.\n", | |
486 | check->corruptions); | |
8599ea4c FS |
487 | } |
488 | ||
489 | if (check->leaks) { | |
f382d43a MR |
490 | qprintf(quiet, |
491 | "\n%" PRId64 " leaked clusters were found on the image.\n" | |
492 | "This means waste of disk space, but no harm to data.\n", | |
493 | check->leaks); | |
8599ea4c FS |
494 | } |
495 | ||
496 | if (check->check_errors) { | |
f382d43a MR |
497 | qprintf(quiet, |
498 | "\n%" PRId64 | |
499 | " internal errors have occurred during the check.\n", | |
500 | check->check_errors); | |
8599ea4c FS |
501 | } |
502 | } | |
503 | ||
504 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
f382d43a MR |
505 | qprintf(quiet, "%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
506 | "%0.2f%% fragmented, %0.2f%% compressed clusters\n", | |
507 | check->allocated_clusters, check->total_clusters, | |
508 | check->allocated_clusters * 100.0 / check->total_clusters, | |
509 | check->fragmented_clusters * 100.0 / check->allocated_clusters, | |
510 | check->compressed_clusters * 100.0 / | |
511 | check->allocated_clusters); | |
8599ea4c FS |
512 | } |
513 | ||
514 | if (check->image_end_offset) { | |
f382d43a MR |
515 | qprintf(quiet, |
516 | "Image end offset: %" PRId64 "\n", check->image_end_offset); | |
8599ea4c FS |
517 | } |
518 | } | |
519 | ||
520 | static int collect_image_check(BlockDriverState *bs, | |
521 | ImageCheck *check, | |
522 | const char *filename, | |
523 | const char *fmt, | |
524 | int fix) | |
525 | { | |
526 | int ret; | |
527 | BdrvCheckResult result; | |
528 | ||
529 | ret = bdrv_check(bs, &result, fix); | |
530 | if (ret < 0) { | |
531 | return ret; | |
532 | } | |
533 | ||
534 | check->filename = g_strdup(filename); | |
535 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
536 | check->check_errors = result.check_errors; | |
537 | check->corruptions = result.corruptions; | |
538 | check->has_corruptions = result.corruptions != 0; | |
539 | check->leaks = result.leaks; | |
540 | check->has_leaks = result.leaks != 0; | |
541 | check->corruptions_fixed = result.corruptions_fixed; | |
542 | check->has_corruptions_fixed = result.corruptions != 0; | |
543 | check->leaks_fixed = result.leaks_fixed; | |
544 | check->has_leaks_fixed = result.leaks != 0; | |
545 | check->image_end_offset = result.image_end_offset; | |
546 | check->has_image_end_offset = result.image_end_offset != 0; | |
547 | check->total_clusters = result.bfi.total_clusters; | |
548 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
549 | check->allocated_clusters = result.bfi.allocated_clusters; | |
550 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
551 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
552 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
e6439d78 SH |
553 | check->compressed_clusters = result.bfi.compressed_clusters; |
554 | check->has_compressed_clusters = result.bfi.compressed_clusters != 0; | |
8599ea4c FS |
555 | |
556 | return 0; | |
557 | } | |
558 | ||
e076f338 KW |
559 | /* |
560 | * Checks an image for consistency. Exit codes: | |
561 | * | |
d6635c4d HR |
562 | * 0 - Check completed, image is good |
563 | * 1 - Check not completed because of internal errors | |
564 | * 2 - Check completed, image is corrupted | |
565 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
566 | * 63 - Checks are not supported by the image format | |
e076f338 | 567 | */ |
1585969c AL |
568 | static int img_check(int argc, char **argv) |
569 | { | |
570 | int c, ret; | |
8599ea4c | 571 | OutputFormat output_format = OFORMAT_HUMAN; |
40055951 | 572 | const char *filename, *fmt, *output, *cache; |
26f54e9a | 573 | BlockBackend *blk; |
1585969c | 574 | BlockDriverState *bs; |
4534ff54 | 575 | int fix = 0; |
058f8f16 | 576 | int flags = BDRV_O_FLAGS | BDRV_O_CHECK; |
7e7d56d9 | 577 | ImageCheck *check; |
f382d43a | 578 | bool quiet = false; |
1585969c AL |
579 | |
580 | fmt = NULL; | |
8599ea4c | 581 | output = NULL; |
40055951 | 582 | cache = BDRV_DEFAULT_CACHE; |
1585969c | 583 | for(;;) { |
8599ea4c FS |
584 | int option_index = 0; |
585 | static const struct option long_options[] = { | |
586 | {"help", no_argument, 0, 'h'}, | |
587 | {"format", required_argument, 0, 'f'}, | |
4fd6a984 | 588 | {"repair", required_argument, 0, 'r'}, |
8599ea4c FS |
589 | {"output", required_argument, 0, OPTION_OUTPUT}, |
590 | {0, 0, 0, 0} | |
591 | }; | |
40055951 | 592 | c = getopt_long(argc, argv, "hf:r:T:q", |
8599ea4c | 593 | long_options, &option_index); |
b8fb60da | 594 | if (c == -1) { |
1585969c | 595 | break; |
b8fb60da | 596 | } |
1585969c | 597 | switch(c) { |
ef87394c | 598 | case '?': |
1585969c AL |
599 | case 'h': |
600 | help(); | |
601 | break; | |
602 | case 'f': | |
603 | fmt = optarg; | |
604 | break; | |
4534ff54 KW |
605 | case 'r': |
606 | flags |= BDRV_O_RDWR; | |
607 | ||
608 | if (!strcmp(optarg, "leaks")) { | |
609 | fix = BDRV_FIX_LEAKS; | |
610 | } else if (!strcmp(optarg, "all")) { | |
611 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
612 | } else { | |
ac1307ab FZ |
613 | error_exit("Unknown option value for -r " |
614 | "(expecting 'leaks' or 'all'): %s", optarg); | |
4534ff54 KW |
615 | } |
616 | break; | |
8599ea4c FS |
617 | case OPTION_OUTPUT: |
618 | output = optarg; | |
619 | break; | |
40055951 HR |
620 | case 'T': |
621 | cache = optarg; | |
622 | break; | |
f382d43a MR |
623 | case 'q': |
624 | quiet = true; | |
625 | break; | |
1585969c AL |
626 | } |
627 | } | |
fc11eb26 | 628 | if (optind != argc - 1) { |
ac1307ab | 629 | error_exit("Expecting one image file name"); |
b8fb60da | 630 | } |
1585969c AL |
631 | filename = argv[optind++]; |
632 | ||
8599ea4c FS |
633 | if (output && !strcmp(output, "json")) { |
634 | output_format = OFORMAT_JSON; | |
635 | } else if (output && !strcmp(output, "human")) { | |
636 | output_format = OFORMAT_HUMAN; | |
637 | } else if (output) { | |
638 | error_report("--output must be used with human or json as argument."); | |
639 | return 1; | |
640 | } | |
641 | ||
40055951 HR |
642 | ret = bdrv_parse_cache_flags(cache, &flags); |
643 | if (ret < 0) { | |
644 | error_report("Invalid source cache option: %s", cache); | |
645 | return 1; | |
646 | } | |
647 | ||
7e7d56d9 MA |
648 | blk = img_open("image", filename, fmt, flags, true, quiet); |
649 | if (!blk) { | |
650 | return 1; | |
c2abccec | 651 | } |
7e7d56d9 | 652 | bs = blk_bs(blk); |
8599ea4c FS |
653 | |
654 | check = g_new0(ImageCheck, 1); | |
655 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
656 | |
657 | if (ret == -ENOTSUP) { | |
55d492d7 | 658 | error_report("This image format does not support checks"); |
fefddf95 | 659 | ret = 63; |
8599ea4c | 660 | goto fail; |
e076f338 KW |
661 | } |
662 | ||
8599ea4c FS |
663 | if (check->corruptions_fixed || check->leaks_fixed) { |
664 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 665 | |
8599ea4c FS |
666 | leaks_fixed = check->leaks_fixed; |
667 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 668 | |
8599ea4c | 669 | if (output_format == OFORMAT_HUMAN) { |
f382d43a MR |
670 | qprintf(quiet, |
671 | "The following inconsistencies were found and repaired:\n\n" | |
672 | " %" PRId64 " leaked clusters\n" | |
673 | " %" PRId64 " corruptions\n\n" | |
674 | "Double checking the fixed image now...\n", | |
675 | check->leaks_fixed, | |
676 | check->corruptions_fixed); | |
e076f338 KW |
677 | } |
678 | ||
8599ea4c | 679 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 680 | |
8599ea4c FS |
681 | check->leaks_fixed = leaks_fixed; |
682 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
683 | } |
684 | ||
832390a5 HR |
685 | if (!ret) { |
686 | switch (output_format) { | |
687 | case OFORMAT_HUMAN: | |
688 | dump_human_image_check(check, quiet); | |
689 | break; | |
690 | case OFORMAT_JSON: | |
691 | dump_json_image_check(check, quiet); | |
692 | break; | |
693 | } | |
c6bb9ad1 FS |
694 | } |
695 | ||
8599ea4c | 696 | if (ret || check->check_errors) { |
832390a5 HR |
697 | if (ret) { |
698 | error_report("Check failed: %s", strerror(-ret)); | |
699 | } else { | |
700 | error_report("Check failed"); | |
701 | } | |
8599ea4c FS |
702 | ret = 1; |
703 | goto fail; | |
c2abccec | 704 | } |
e076f338 | 705 | |
8599ea4c FS |
706 | if (check->corruptions) { |
707 | ret = 2; | |
708 | } else if (check->leaks) { | |
709 | ret = 3; | |
e076f338 | 710 | } else { |
8599ea4c | 711 | ret = 0; |
e076f338 | 712 | } |
8599ea4c FS |
713 | |
714 | fail: | |
715 | qapi_free_ImageCheck(check); | |
26f54e9a | 716 | blk_unref(blk); |
8599ea4c | 717 | return ret; |
1585969c AL |
718 | } |
719 | ||
d4a3238a HR |
720 | typedef struct CommonBlockJobCBInfo { |
721 | BlockDriverState *bs; | |
722 | Error **errp; | |
723 | } CommonBlockJobCBInfo; | |
724 | ||
725 | static void common_block_job_cb(void *opaque, int ret) | |
726 | { | |
727 | CommonBlockJobCBInfo *cbi = opaque; | |
728 | ||
729 | if (ret < 0) { | |
730 | error_setg_errno(cbi->errp, -ret, "Block job failed"); | |
731 | } | |
732 | ||
733 | /* Drop this block job's reference */ | |
734 | bdrv_unref(cbi->bs); | |
735 | } | |
736 | ||
737 | static void run_block_job(BlockJob *job, Error **errp) | |
738 | { | |
739 | AioContext *aio_context = bdrv_get_aio_context(job->bs); | |
740 | ||
741 | do { | |
742 | aio_poll(aio_context, true); | |
687fa1d8 | 743 | qemu_progress_print((float)job->offset / job->len * 100.f, 0); |
d4a3238a HR |
744 | } while (!job->ready); |
745 | ||
746 | block_job_complete_sync(job, errp); | |
687fa1d8 HR |
747 | |
748 | /* A block job may finish instantaneously without publishing any progress, | |
749 | * so just signal completion here */ | |
750 | qemu_progress_print(100.f, 0); | |
d4a3238a HR |
751 | } |
752 | ||
ea2384d3 FB |
753 | static int img_commit(int argc, char **argv) |
754 | { | |
661a0f71 | 755 | int c, ret, flags; |
1b22bffd | 756 | const char *filename, *fmt, *cache, *base; |
26f54e9a | 757 | BlockBackend *blk; |
d4a3238a | 758 | BlockDriverState *bs, *base_bs; |
687fa1d8 | 759 | bool progress = false, quiet = false, drop = false; |
d4a3238a HR |
760 | Error *local_err = NULL; |
761 | CommonBlockJobCBInfo cbi; | |
ea2384d3 FB |
762 | |
763 | fmt = NULL; | |
661a0f71 | 764 | cache = BDRV_DEFAULT_CACHE; |
1b22bffd | 765 | base = NULL; |
ea2384d3 | 766 | for(;;) { |
1b22bffd | 767 | c = getopt(argc, argv, "f:ht:b:dpq"); |
b8fb60da | 768 | if (c == -1) { |
ea2384d3 | 769 | break; |
b8fb60da | 770 | } |
ea2384d3 | 771 | switch(c) { |
ef87394c | 772 | case '?': |
ea2384d3 FB |
773 | case 'h': |
774 | help(); | |
775 | break; | |
776 | case 'f': | |
777 | fmt = optarg; | |
778 | break; | |
661a0f71 FS |
779 | case 't': |
780 | cache = optarg; | |
781 | break; | |
1b22bffd HR |
782 | case 'b': |
783 | base = optarg; | |
784 | /* -b implies -d */ | |
785 | drop = true; | |
786 | break; | |
9a86fe48 HR |
787 | case 'd': |
788 | drop = true; | |
789 | break; | |
687fa1d8 HR |
790 | case 'p': |
791 | progress = true; | |
792 | break; | |
f382d43a MR |
793 | case 'q': |
794 | quiet = true; | |
795 | break; | |
ea2384d3 FB |
796 | } |
797 | } | |
687fa1d8 HR |
798 | |
799 | /* Progress is not shown in Quiet mode */ | |
800 | if (quiet) { | |
801 | progress = false; | |
802 | } | |
803 | ||
fc11eb26 | 804 | if (optind != argc - 1) { |
ac1307ab | 805 | error_exit("Expecting one image file name"); |
b8fb60da | 806 | } |
ea2384d3 FB |
807 | filename = argv[optind++]; |
808 | ||
9a86fe48 | 809 | flags = BDRV_O_RDWR | BDRV_O_UNMAP; |
c3993cdc | 810 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
811 | if (ret < 0) { |
812 | error_report("Invalid cache option: %s", cache); | |
a3981eb9 | 813 | return 1; |
661a0f71 FS |
814 | } |
815 | ||
7e7d56d9 MA |
816 | blk = img_open("image", filename, fmt, flags, true, quiet); |
817 | if (!blk) { | |
818 | return 1; | |
c2abccec | 819 | } |
7e7d56d9 MA |
820 | bs = blk_bs(blk); |
821 | ||
687fa1d8 HR |
822 | qemu_progress_init(progress, 1.f); |
823 | qemu_progress_print(0.f, 100); | |
824 | ||
1b22bffd HR |
825 | if (base) { |
826 | base_bs = bdrv_find_backing_image(bs, base); | |
827 | if (!base_bs) { | |
828 | error_set(&local_err, QERR_BASE_NOT_FOUND, base); | |
829 | goto done; | |
830 | } | |
831 | } else { | |
832 | /* This is different from QMP, which by default uses the deepest file in | |
833 | * the backing chain (i.e., the very base); however, the traditional | |
834 | * behavior of qemu-img commit is using the immediate backing file. */ | |
835 | base_bs = bs->backing_hd; | |
836 | if (!base_bs) { | |
837 | error_setg(&local_err, "Image does not have a backing file"); | |
838 | goto done; | |
839 | } | |
d4a3238a HR |
840 | } |
841 | ||
842 | cbi = (CommonBlockJobCBInfo){ | |
843 | .errp = &local_err, | |
844 | .bs = bs, | |
845 | }; | |
846 | ||
847 | commit_active_start(bs, base_bs, 0, BLOCKDEV_ON_ERROR_REPORT, | |
848 | common_block_job_cb, &cbi, &local_err); | |
849 | if (local_err) { | |
850 | goto done; | |
ea2384d3 FB |
851 | } |
852 | ||
9a86fe48 HR |
853 | /* The block job will swap base_bs and bs (which is not what we really want |
854 | * here, but okay) and unref base_bs (after the swap, i.e., the old top | |
855 | * image). In order to still be able to empty that top image afterwards, | |
856 | * increment the reference counter here preemptively. */ | |
857 | if (!drop) { | |
858 | bdrv_ref(base_bs); | |
859 | } | |
860 | ||
d4a3238a | 861 | run_block_job(bs->job, &local_err); |
9a86fe48 HR |
862 | if (local_err) { |
863 | goto unref_backing; | |
864 | } | |
865 | ||
866 | if (!drop && base_bs->drv->bdrv_make_empty) { | |
867 | ret = base_bs->drv->bdrv_make_empty(base_bs); | |
868 | if (ret) { | |
869 | error_setg_errno(&local_err, -ret, "Could not empty %s", | |
870 | filename); | |
871 | goto unref_backing; | |
872 | } | |
873 | } | |
874 | ||
875 | unref_backing: | |
876 | if (!drop) { | |
877 | bdrv_unref(base_bs); | |
878 | } | |
d4a3238a HR |
879 | |
880 | done: | |
687fa1d8 HR |
881 | qemu_progress_end(); |
882 | ||
26f54e9a | 883 | blk_unref(blk); |
d4a3238a HR |
884 | |
885 | if (local_err) { | |
6936f299 | 886 | error_report_err(local_err); |
c2abccec MK |
887 | return 1; |
888 | } | |
d4a3238a HR |
889 | |
890 | qprintf(quiet, "Image committed.\n"); | |
ea2384d3 FB |
891 | return 0; |
892 | } | |
893 | ||
f58c7b35 TS |
894 | /* |
895 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
896 | * a non-NUL byte. | |
897 | * | |
898 | * 'pnum' is set to the number of sectors (including and immediately following | |
899 | * the first one) that are known to be in the same allocated/unallocated state. | |
900 | */ | |
ea2384d3 FB |
901 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
902 | { | |
1a6d39fd SH |
903 | bool is_zero; |
904 | int i; | |
ea2384d3 FB |
905 | |
906 | if (n <= 0) { | |
907 | *pnum = 0; | |
908 | return 0; | |
909 | } | |
1a6d39fd | 910 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
911 | for(i = 1; i < n; i++) { |
912 | buf += 512; | |
1a6d39fd | 913 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 914 | break; |
1a6d39fd | 915 | } |
ea2384d3 FB |
916 | } |
917 | *pnum = i; | |
1a6d39fd | 918 | return !is_zero; |
ea2384d3 FB |
919 | } |
920 | ||
a22f123c KW |
921 | /* |
922 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
923 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
924 | * breaking up write requests for only small sparse areas. | |
925 | */ | |
926 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
927 | int min) | |
928 | { | |
929 | int ret; | |
930 | int num_checked, num_used; | |
931 | ||
932 | if (n < min) { | |
933 | min = n; | |
934 | } | |
935 | ||
936 | ret = is_allocated_sectors(buf, n, pnum); | |
937 | if (!ret) { | |
938 | return ret; | |
939 | } | |
940 | ||
941 | num_used = *pnum; | |
942 | buf += BDRV_SECTOR_SIZE * *pnum; | |
943 | n -= *pnum; | |
944 | num_checked = num_used; | |
945 | ||
946 | while (n > 0) { | |
947 | ret = is_allocated_sectors(buf, n, pnum); | |
948 | ||
949 | buf += BDRV_SECTOR_SIZE * *pnum; | |
950 | n -= *pnum; | |
951 | num_checked += *pnum; | |
952 | if (ret) { | |
953 | num_used = num_checked; | |
954 | } else if (*pnum >= min) { | |
955 | break; | |
956 | } | |
957 | } | |
958 | ||
959 | *pnum = num_used; | |
960 | return 1; | |
961 | } | |
962 | ||
3e85c6fd KW |
963 | /* |
964 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
965 | * buffers matches, non-zero otherwise. | |
966 | * | |
967 | * pnum is set to the number of sectors (including and immediately following | |
968 | * the first one) that are known to have the same comparison result | |
969 | */ | |
970 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
971 | int *pnum) | |
972 | { | |
973 | int res, i; | |
974 | ||
975 | if (n <= 0) { | |
976 | *pnum = 0; | |
977 | return 0; | |
978 | } | |
979 | ||
980 | res = !!memcmp(buf1, buf2, 512); | |
981 | for(i = 1; i < n; i++) { | |
982 | buf1 += 512; | |
983 | buf2 += 512; | |
984 | ||
985 | if (!!memcmp(buf1, buf2, 512) != res) { | |
986 | break; | |
987 | } | |
988 | } | |
989 | ||
990 | *pnum = i; | |
991 | return res; | |
992 | } | |
993 | ||
80ee15a6 | 994 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 | 995 | |
d14ed18c MR |
996 | static int64_t sectors_to_bytes(int64_t sectors) |
997 | { | |
998 | return sectors << BDRV_SECTOR_BITS; | |
999 | } | |
1000 | ||
1001 | static int64_t sectors_to_process(int64_t total, int64_t from) | |
1002 | { | |
1003 | return MIN(total - from, IO_BUF_SIZE >> BDRV_SECTOR_BITS); | |
1004 | } | |
1005 | ||
1006 | /* | |
1007 | * Check if passed sectors are empty (not allocated or contain only 0 bytes) | |
1008 | * | |
1009 | * Returns 0 in case sectors are filled with 0, 1 if sectors contain non-zero | |
1010 | * data and negative value on error. | |
1011 | * | |
f1d3cd79 | 1012 | * @param blk: BlockBackend for the image |
d14ed18c MR |
1013 | * @param sect_num: Number of first sector to check |
1014 | * @param sect_count: Number of sectors to check | |
1015 | * @param filename: Name of disk file we are checking (logging purpose) | |
1016 | * @param buffer: Allocated buffer for storing read data | |
1017 | * @param quiet: Flag for quiet mode | |
1018 | */ | |
f1d3cd79 | 1019 | static int check_empty_sectors(BlockBackend *blk, int64_t sect_num, |
d14ed18c MR |
1020 | int sect_count, const char *filename, |
1021 | uint8_t *buffer, bool quiet) | |
1022 | { | |
1023 | int pnum, ret = 0; | |
f1d3cd79 | 1024 | ret = blk_read(blk, sect_num, buffer, sect_count); |
d14ed18c MR |
1025 | if (ret < 0) { |
1026 | error_report("Error while reading offset %" PRId64 " of %s: %s", | |
1027 | sectors_to_bytes(sect_num), filename, strerror(-ret)); | |
1028 | return ret; | |
1029 | } | |
1030 | ret = is_allocated_sectors(buffer, sect_count, &pnum); | |
1031 | if (ret || pnum != sect_count) { | |
1032 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", | |
1033 | sectors_to_bytes(ret ? sect_num : sect_num + pnum)); | |
1034 | return 1; | |
1035 | } | |
1036 | ||
1037 | return 0; | |
1038 | } | |
1039 | ||
1040 | /* | |
1041 | * Compares two images. Exit codes: | |
1042 | * | |
1043 | * 0 - Images are identical | |
1044 | * 1 - Images differ | |
1045 | * >1 - Error occurred | |
1046 | */ | |
1047 | static int img_compare(int argc, char **argv) | |
1048 | { | |
40055951 | 1049 | const char *fmt1 = NULL, *fmt2 = NULL, *cache, *filename1, *filename2; |
26f54e9a | 1050 | BlockBackend *blk1, *blk2; |
d14ed18c MR |
1051 | BlockDriverState *bs1, *bs2; |
1052 | int64_t total_sectors1, total_sectors2; | |
1053 | uint8_t *buf1 = NULL, *buf2 = NULL; | |
1054 | int pnum1, pnum2; | |
1055 | int allocated1, allocated2; | |
1056 | int ret = 0; /* return value - 0 Ident, 1 Different, >1 Error */ | |
1057 | bool progress = false, quiet = false, strict = false; | |
40055951 | 1058 | int flags; |
d14ed18c MR |
1059 | int64_t total_sectors; |
1060 | int64_t sector_num = 0; | |
1061 | int64_t nb_sectors; | |
1062 | int c, pnum; | |
d14ed18c MR |
1063 | uint64_t progress_base; |
1064 | ||
40055951 | 1065 | cache = BDRV_DEFAULT_CACHE; |
d14ed18c | 1066 | for (;;) { |
40055951 | 1067 | c = getopt(argc, argv, "hf:F:T:pqs"); |
d14ed18c MR |
1068 | if (c == -1) { |
1069 | break; | |
1070 | } | |
1071 | switch (c) { | |
1072 | case '?': | |
1073 | case 'h': | |
1074 | help(); | |
1075 | break; | |
1076 | case 'f': | |
1077 | fmt1 = optarg; | |
1078 | break; | |
1079 | case 'F': | |
1080 | fmt2 = optarg; | |
1081 | break; | |
40055951 HR |
1082 | case 'T': |
1083 | cache = optarg; | |
1084 | break; | |
d14ed18c MR |
1085 | case 'p': |
1086 | progress = true; | |
1087 | break; | |
1088 | case 'q': | |
1089 | quiet = true; | |
1090 | break; | |
1091 | case 's': | |
1092 | strict = true; | |
1093 | break; | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | /* Progress is not shown in Quiet mode */ | |
1098 | if (quiet) { | |
1099 | progress = false; | |
1100 | } | |
1101 | ||
1102 | ||
fc11eb26 | 1103 | if (optind != argc - 2) { |
ac1307ab | 1104 | error_exit("Expecting two image file names"); |
d14ed18c MR |
1105 | } |
1106 | filename1 = argv[optind++]; | |
1107 | filename2 = argv[optind++]; | |
1108 | ||
cbda016d SH |
1109 | /* Initialize before goto out */ |
1110 | qemu_progress_init(progress, 2.0); | |
1111 | ||
40055951 HR |
1112 | flags = BDRV_O_FLAGS; |
1113 | ret = bdrv_parse_cache_flags(cache, &flags); | |
1114 | if (ret < 0) { | |
1115 | error_report("Invalid source cache option: %s", cache); | |
1116 | ret = 2; | |
1117 | goto out3; | |
1118 | } | |
1119 | ||
7e7d56d9 MA |
1120 | blk1 = img_open("image_1", filename1, fmt1, flags, true, quiet); |
1121 | if (!blk1) { | |
d14ed18c | 1122 | ret = 2; |
7e7d56d9 | 1123 | goto out3; |
d14ed18c | 1124 | } |
7e7d56d9 | 1125 | bs1 = blk_bs(blk1); |
d14ed18c | 1126 | |
7e7d56d9 MA |
1127 | blk2 = img_open("image_2", filename2, fmt2, flags, true, quiet); |
1128 | if (!blk2) { | |
d14ed18c | 1129 | ret = 2; |
7e7d56d9 | 1130 | goto out2; |
d14ed18c | 1131 | } |
7e7d56d9 | 1132 | bs2 = blk_bs(blk2); |
d14ed18c | 1133 | |
f1d3cd79 HR |
1134 | buf1 = blk_blockalign(blk1, IO_BUF_SIZE); |
1135 | buf2 = blk_blockalign(blk2, IO_BUF_SIZE); | |
1136 | total_sectors1 = blk_nb_sectors(blk1); | |
52bf1e72 MA |
1137 | if (total_sectors1 < 0) { |
1138 | error_report("Can't get size of %s: %s", | |
1139 | filename1, strerror(-total_sectors1)); | |
1140 | ret = 4; | |
1141 | goto out; | |
1142 | } | |
f1d3cd79 | 1143 | total_sectors2 = blk_nb_sectors(blk2); |
52bf1e72 MA |
1144 | if (total_sectors2 < 0) { |
1145 | error_report("Can't get size of %s: %s", | |
1146 | filename2, strerror(-total_sectors2)); | |
1147 | ret = 4; | |
1148 | goto out; | |
1149 | } | |
d14ed18c MR |
1150 | total_sectors = MIN(total_sectors1, total_sectors2); |
1151 | progress_base = MAX(total_sectors1, total_sectors2); | |
1152 | ||
1153 | qemu_progress_print(0, 100); | |
1154 | ||
1155 | if (strict && total_sectors1 != total_sectors2) { | |
1156 | ret = 1; | |
1157 | qprintf(quiet, "Strict mode: Image size mismatch!\n"); | |
1158 | goto out; | |
1159 | } | |
1160 | ||
1161 | for (;;) { | |
1162 | nb_sectors = sectors_to_process(total_sectors, sector_num); | |
1163 | if (nb_sectors <= 0) { | |
1164 | break; | |
1165 | } | |
1166 | allocated1 = bdrv_is_allocated_above(bs1, NULL, sector_num, nb_sectors, | |
1167 | &pnum1); | |
1168 | if (allocated1 < 0) { | |
1169 | ret = 3; | |
1170 | error_report("Sector allocation test failed for %s", filename1); | |
1171 | goto out; | |
1172 | } | |
1173 | ||
1174 | allocated2 = bdrv_is_allocated_above(bs2, NULL, sector_num, nb_sectors, | |
1175 | &pnum2); | |
1176 | if (allocated2 < 0) { | |
1177 | ret = 3; | |
1178 | error_report("Sector allocation test failed for %s", filename2); | |
1179 | goto out; | |
1180 | } | |
1181 | nb_sectors = MIN(pnum1, pnum2); | |
1182 | ||
1183 | if (allocated1 == allocated2) { | |
1184 | if (allocated1) { | |
f1d3cd79 | 1185 | ret = blk_read(blk1, sector_num, buf1, nb_sectors); |
d14ed18c MR |
1186 | if (ret < 0) { |
1187 | error_report("Error while reading offset %" PRId64 " of %s:" | |
1188 | " %s", sectors_to_bytes(sector_num), filename1, | |
1189 | strerror(-ret)); | |
1190 | ret = 4; | |
1191 | goto out; | |
1192 | } | |
f1d3cd79 | 1193 | ret = blk_read(blk2, sector_num, buf2, nb_sectors); |
d14ed18c MR |
1194 | if (ret < 0) { |
1195 | error_report("Error while reading offset %" PRId64 | |
1196 | " of %s: %s", sectors_to_bytes(sector_num), | |
1197 | filename2, strerror(-ret)); | |
1198 | ret = 4; | |
1199 | goto out; | |
1200 | } | |
1201 | ret = compare_sectors(buf1, buf2, nb_sectors, &pnum); | |
1202 | if (ret || pnum != nb_sectors) { | |
d14ed18c MR |
1203 | qprintf(quiet, "Content mismatch at offset %" PRId64 "!\n", |
1204 | sectors_to_bytes( | |
1205 | ret ? sector_num : sector_num + pnum)); | |
36452f12 | 1206 | ret = 1; |
d14ed18c MR |
1207 | goto out; |
1208 | } | |
1209 | } | |
1210 | } else { | |
1211 | if (strict) { | |
1212 | ret = 1; | |
1213 | qprintf(quiet, "Strict mode: Offset %" PRId64 | |
1214 | " allocation mismatch!\n", | |
1215 | sectors_to_bytes(sector_num)); | |
1216 | goto out; | |
1217 | } | |
1218 | ||
1219 | if (allocated1) { | |
f1d3cd79 | 1220 | ret = check_empty_sectors(blk1, sector_num, nb_sectors, |
d14ed18c MR |
1221 | filename1, buf1, quiet); |
1222 | } else { | |
f1d3cd79 | 1223 | ret = check_empty_sectors(blk2, sector_num, nb_sectors, |
d14ed18c MR |
1224 | filename2, buf1, quiet); |
1225 | } | |
1226 | if (ret) { | |
1227 | if (ret < 0) { | |
d14ed18c MR |
1228 | error_report("Error while reading offset %" PRId64 ": %s", |
1229 | sectors_to_bytes(sector_num), strerror(-ret)); | |
36452f12 | 1230 | ret = 4; |
d14ed18c MR |
1231 | } |
1232 | goto out; | |
1233 | } | |
1234 | } | |
1235 | sector_num += nb_sectors; | |
1236 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1237 | } | |
1238 | ||
1239 | if (total_sectors1 != total_sectors2) { | |
f1d3cd79 | 1240 | BlockBackend *blk_over; |
d14ed18c MR |
1241 | int64_t total_sectors_over; |
1242 | const char *filename_over; | |
1243 | ||
1244 | qprintf(quiet, "Warning: Image size mismatch!\n"); | |
1245 | if (total_sectors1 > total_sectors2) { | |
1246 | total_sectors_over = total_sectors1; | |
f1d3cd79 | 1247 | blk_over = blk1; |
d14ed18c MR |
1248 | filename_over = filename1; |
1249 | } else { | |
1250 | total_sectors_over = total_sectors2; | |
f1d3cd79 | 1251 | blk_over = blk2; |
d14ed18c MR |
1252 | filename_over = filename2; |
1253 | } | |
1254 | ||
1255 | for (;;) { | |
1256 | nb_sectors = sectors_to_process(total_sectors_over, sector_num); | |
1257 | if (nb_sectors <= 0) { | |
1258 | break; | |
1259 | } | |
f1d3cd79 | 1260 | ret = bdrv_is_allocated_above(blk_bs(blk_over), NULL, sector_num, |
d14ed18c MR |
1261 | nb_sectors, &pnum); |
1262 | if (ret < 0) { | |
1263 | ret = 3; | |
1264 | error_report("Sector allocation test failed for %s", | |
1265 | filename_over); | |
1266 | goto out; | |
1267 | ||
1268 | } | |
1269 | nb_sectors = pnum; | |
1270 | if (ret) { | |
f1d3cd79 | 1271 | ret = check_empty_sectors(blk_over, sector_num, nb_sectors, |
d14ed18c MR |
1272 | filename_over, buf1, quiet); |
1273 | if (ret) { | |
1274 | if (ret < 0) { | |
d14ed18c MR |
1275 | error_report("Error while reading offset %" PRId64 |
1276 | " of %s: %s", sectors_to_bytes(sector_num), | |
1277 | filename_over, strerror(-ret)); | |
36452f12 | 1278 | ret = 4; |
d14ed18c MR |
1279 | } |
1280 | goto out; | |
1281 | } | |
1282 | } | |
1283 | sector_num += nb_sectors; | |
1284 | qemu_progress_print(((float) nb_sectors / progress_base)*100, 100); | |
1285 | } | |
1286 | } | |
1287 | ||
1288 | qprintf(quiet, "Images are identical.\n"); | |
1289 | ret = 0; | |
1290 | ||
1291 | out: | |
d14ed18c MR |
1292 | qemu_vfree(buf1); |
1293 | qemu_vfree(buf2); | |
26f54e9a | 1294 | blk_unref(blk2); |
d14ed18c | 1295 | out2: |
26f54e9a | 1296 | blk_unref(blk1); |
d14ed18c MR |
1297 | out3: |
1298 | qemu_progress_end(); | |
1299 | return ret; | |
1300 | } | |
1301 | ||
ea2384d3 FB |
1302 | static int img_convert(int argc, char **argv) |
1303 | { | |
24f833cd | 1304 | int c, n, n1, bs_n, bs_i, compress, cluster_sectors, skip_create; |
13c28af8 | 1305 | int64_t ret = 0; |
40055951 HR |
1306 | int progress = 0, flags, src_flags; |
1307 | const char *fmt, *out_fmt, *cache, *src_cache, *out_baseimg, *out_filename; | |
b50cbabc | 1308 | BlockDriver *drv, *proto_drv; |
26f54e9a | 1309 | BlockBackend **blk = NULL, *out_blk = NULL; |
c2abccec | 1310 | BlockDriverState **bs = NULL, *out_bs = NULL; |
802c3d4c | 1311 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
52bf1e72 | 1312 | int64_t *bs_sectors = NULL; |
c2abccec | 1313 | uint8_t * buf = NULL; |
f2521c90 | 1314 | size_t bufsectors = IO_BUF_SIZE / BDRV_SECTOR_SIZE; |
ea2384d3 | 1315 | const uint8_t *buf1; |
faea38e7 | 1316 | BlockDriverInfo bdi; |
83d0521a CL |
1317 | QemuOpts *opts = NULL; |
1318 | QemuOptsList *create_opts = NULL; | |
1319 | const char *out_baseimg_param; | |
efa84d43 | 1320 | char *options = NULL; |
51ef6727 | 1321 | const char *snapshot_name = NULL; |
a22f123c | 1322 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
f382d43a | 1323 | bool quiet = false; |
cc84d90f | 1324 | Error *local_err = NULL; |
ef80654d | 1325 | QemuOpts *sn_opts = NULL; |
ea2384d3 FB |
1326 | |
1327 | fmt = NULL; | |
1328 | out_fmt = "raw"; | |
661a0f71 | 1329 | cache = "unsafe"; |
40055951 | 1330 | src_cache = BDRV_DEFAULT_CACHE; |
f58c7b35 | 1331 | out_baseimg = NULL; |
eec77d9e | 1332 | compress = 0; |
b2e10493 | 1333 | skip_create = 0; |
ea2384d3 | 1334 | for(;;) { |
40055951 | 1335 | c = getopt(argc, argv, "hf:O:B:ce6o:s:l:S:pt:T:qn"); |
b8fb60da | 1336 | if (c == -1) { |
ea2384d3 | 1337 | break; |
b8fb60da | 1338 | } |
ea2384d3 | 1339 | switch(c) { |
ef87394c | 1340 | case '?': |
ea2384d3 FB |
1341 | case 'h': |
1342 | help(); | |
1343 | break; | |
1344 | case 'f': | |
1345 | fmt = optarg; | |
1346 | break; | |
1347 | case 'O': | |
1348 | out_fmt = optarg; | |
1349 | break; | |
f58c7b35 TS |
1350 | case 'B': |
1351 | out_baseimg = optarg; | |
1352 | break; | |
ea2384d3 | 1353 | case 'c': |
eec77d9e | 1354 | compress = 1; |
ea2384d3 FB |
1355 | break; |
1356 | case 'e': | |
9d42e15d | 1357 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e | 1358 | "encryption\' instead!"); |
2dc8328b | 1359 | ret = -1; |
64bb01aa | 1360 | goto fail_getopt; |
ec36ba14 | 1361 | case '6': |
9d42e15d | 1362 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e | 1363 | "compat6\' instead!"); |
2dc8328b | 1364 | ret = -1; |
64bb01aa | 1365 | goto fail_getopt; |
efa84d43 | 1366 | case 'o': |
2dc8328b KW |
1367 | if (!is_valid_option_list(optarg)) { |
1368 | error_report("Invalid option list: %s", optarg); | |
1369 | ret = -1; | |
64bb01aa | 1370 | goto fail_getopt; |
2dc8328b KW |
1371 | } |
1372 | if (!options) { | |
1373 | options = g_strdup(optarg); | |
1374 | } else { | |
1375 | char *old_options = options; | |
1376 | options = g_strdup_printf("%s,%s", options, optarg); | |
1377 | g_free(old_options); | |
1378 | } | |
efa84d43 | 1379 | break; |
51ef6727 | 1380 | case 's': |
1381 | snapshot_name = optarg; | |
1382 | break; | |
ef80654d WX |
1383 | case 'l': |
1384 | if (strstart(optarg, SNAPSHOT_OPT_BASE, NULL)) { | |
1385 | sn_opts = qemu_opts_parse(&internal_snapshot_opts, optarg, 0); | |
1386 | if (!sn_opts) { | |
1387 | error_report("Failed in parsing snapshot param '%s'", | |
1388 | optarg); | |
2dc8328b | 1389 | ret = -1; |
64bb01aa | 1390 | goto fail_getopt; |
ef80654d WX |
1391 | } |
1392 | } else { | |
1393 | snapshot_name = optarg; | |
1394 | } | |
1395 | break; | |
a22f123c KW |
1396 | case 'S': |
1397 | { | |
1398 | int64_t sval; | |
e36b3695 MA |
1399 | char *end; |
1400 | sval = strtosz_suffix(optarg, &end, STRTOSZ_DEFSUFFIX_B); | |
1401 | if (sval < 0 || *end) { | |
a22f123c | 1402 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
2dc8328b | 1403 | ret = -1; |
64bb01aa | 1404 | goto fail_getopt; |
a22f123c KW |
1405 | } |
1406 | ||
1407 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
1408 | break; | |
1409 | } | |
6b837bc4 JS |
1410 | case 'p': |
1411 | progress = 1; | |
1412 | break; | |
661a0f71 FS |
1413 | case 't': |
1414 | cache = optarg; | |
1415 | break; | |
40055951 HR |
1416 | case 'T': |
1417 | src_cache = optarg; | |
1418 | break; | |
f382d43a MR |
1419 | case 'q': |
1420 | quiet = true; | |
1421 | break; | |
b2e10493 AD |
1422 | case 'n': |
1423 | skip_create = 1; | |
1424 | break; | |
ea2384d3 FB |
1425 | } |
1426 | } | |
3b46e624 | 1427 | |
64bb01aa | 1428 | /* Initialize before goto out */ |
f382d43a MR |
1429 | if (quiet) { |
1430 | progress = 0; | |
1431 | } | |
64bb01aa KW |
1432 | qemu_progress_init(progress, 1.0); |
1433 | ||
f382d43a | 1434 | |
926c2d23 | 1435 | bs_n = argc - optind - 1; |
a283cb6e | 1436 | out_filename = bs_n >= 1 ? argv[argc - 1] : NULL; |
f58c7b35 | 1437 | |
2dc8328b | 1438 | if (options && has_help_option(options)) { |
4ac8aacd JS |
1439 | ret = print_block_option_help(out_filename, out_fmt); |
1440 | goto out; | |
1441 | } | |
1442 | ||
a283cb6e | 1443 | if (bs_n < 1) { |
ac1307ab | 1444 | error_exit("Must specify image file name"); |
a283cb6e KW |
1445 | } |
1446 | ||
1447 | ||
c2abccec | 1448 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
1449 | error_report("-B makes no sense when concatenating multiple input " |
1450 | "images"); | |
31ca34b8 JS |
1451 | ret = -1; |
1452 | goto out; | |
c2abccec | 1453 | } |
f8111c24 | 1454 | |
40055951 HR |
1455 | src_flags = BDRV_O_FLAGS; |
1456 | ret = bdrv_parse_cache_flags(src_cache, &src_flags); | |
1457 | if (ret < 0) { | |
1458 | error_report("Invalid source cache option: %s", src_cache); | |
1459 | goto out; | |
1460 | } | |
1461 | ||
6b837bc4 JS |
1462 | qemu_progress_print(0, 100); |
1463 | ||
26f54e9a | 1464 | blk = g_new0(BlockBackend *, bs_n); |
d739f1c4 | 1465 | bs = g_new0(BlockDriverState *, bs_n); |
52bf1e72 | 1466 | bs_sectors = g_new(int64_t, bs_n); |
926c2d23 AZ |
1467 | |
1468 | total_sectors = 0; | |
1469 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
9aebf3b8 | 1470 | char *id = bs_n > 1 ? g_strdup_printf("source_%d", bs_i) |
9ffe3332 | 1471 | : g_strdup("source"); |
7e7d56d9 MA |
1472 | blk[bs_i] = img_open(id, argv[optind + bs_i], fmt, src_flags, |
1473 | true, quiet); | |
9ffe3332 | 1474 | g_free(id); |
7e7d56d9 | 1475 | if (!blk[bs_i]) { |
c2abccec MK |
1476 | ret = -1; |
1477 | goto out; | |
1478 | } | |
7e7d56d9 | 1479 | bs[bs_i] = blk_bs(blk[bs_i]); |
f1d3cd79 | 1480 | bs_sectors[bs_i] = blk_nb_sectors(blk[bs_i]); |
52bf1e72 MA |
1481 | if (bs_sectors[bs_i] < 0) { |
1482 | error_report("Could not get size of %s: %s", | |
1483 | argv[optind + bs_i], strerror(-bs_sectors[bs_i])); | |
1484 | ret = -1; | |
1485 | goto out; | |
1486 | } | |
d739f1c4 | 1487 | total_sectors += bs_sectors[bs_i]; |
926c2d23 | 1488 | } |
ea2384d3 | 1489 | |
ef80654d WX |
1490 | if (sn_opts) { |
1491 | ret = bdrv_snapshot_load_tmp(bs[0], | |
1492 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_ID), | |
1493 | qemu_opt_get(sn_opts, SNAPSHOT_OPT_NAME), | |
1494 | &local_err); | |
1495 | } else if (snapshot_name != NULL) { | |
51ef6727 | 1496 | if (bs_n > 1) { |
6daf194d | 1497 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 1498 | ret = -1; |
1499 | goto out; | |
1500 | } | |
7b4c4781 WX |
1501 | |
1502 | bdrv_snapshot_load_tmp_by_id_or_name(bs[0], snapshot_name, &local_err); | |
ef80654d | 1503 | } |
84d18f06 | 1504 | if (local_err) { |
ef80654d WX |
1505 | error_report("Failed to load snapshot: %s", |
1506 | error_get_pretty(local_err)); | |
1507 | error_free(local_err); | |
1508 | ret = -1; | |
1509 | goto out; | |
51ef6727 | 1510 | } |
1511 | ||
efa84d43 | 1512 | /* Find driver and parse its options */ |
ea2384d3 | 1513 | drv = bdrv_find_format(out_fmt); |
c2abccec | 1514 | if (!drv) { |
15654a6d | 1515 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
1516 | ret = -1; |
1517 | goto out; | |
1518 | } | |
efa84d43 | 1519 | |
b65a5e12 | 1520 | proto_drv = bdrv_find_protocol(out_filename, true, &local_err); |
c2abccec | 1521 | if (!proto_drv) { |
b65a5e12 HR |
1522 | qerror_report_err(local_err); |
1523 | error_free(local_err); | |
c2abccec MK |
1524 | ret = -1; |
1525 | goto out; | |
1526 | } | |
b50cbabc | 1527 | |
2e024cde HR |
1528 | if (!skip_create) { |
1529 | if (!drv->create_opts) { | |
1530 | error_report("Format driver '%s' does not support image creation", | |
1531 | drv->format_name); | |
1532 | ret = -1; | |
1533 | goto out; | |
1534 | } | |
f75613cf | 1535 | |
2e024cde HR |
1536 | if (!proto_drv->create_opts) { |
1537 | error_report("Protocol driver '%s' does not support image creation", | |
1538 | proto_drv->format_name); | |
1539 | ret = -1; | |
1540 | goto out; | |
1541 | } | |
f75613cf | 1542 | |
2e024cde HR |
1543 | create_opts = qemu_opts_append(create_opts, drv->create_opts); |
1544 | create_opts = qemu_opts_append(create_opts, proto_drv->create_opts); | |
db08adf5 | 1545 | |
2e024cde HR |
1546 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
1547 | if (options && qemu_opts_do_parse(opts, options, NULL)) { | |
1548 | error_report("Invalid options for file format '%s'", out_fmt); | |
1549 | ret = -1; | |
1550 | goto out; | |
1551 | } | |
efa84d43 | 1552 | |
39101f25 MA |
1553 | qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_sectors * 512, |
1554 | &error_abort); | |
2e024cde HR |
1555 | ret = add_old_style_options(out_fmt, opts, out_baseimg, NULL); |
1556 | if (ret < 0) { | |
1557 | goto out; | |
1558 | } | |
c2abccec | 1559 | } |
efa84d43 | 1560 | |
a18953fb | 1561 | /* Get backing file name if -o backing_file was used */ |
83d0521a | 1562 | out_baseimg_param = qemu_opt_get(opts, BLOCK_OPT_BACKING_FILE); |
a18953fb | 1563 | if (out_baseimg_param) { |
83d0521a | 1564 | out_baseimg = out_baseimg_param; |
a18953fb KW |
1565 | } |
1566 | ||
efa84d43 | 1567 | /* Check if compression is supported */ |
eec77d9e | 1568 | if (compress) { |
83d0521a CL |
1569 | bool encryption = |
1570 | qemu_opt_get_bool(opts, BLOCK_OPT_ENCRYPT, false); | |
1571 | const char *preallocation = | |
1572 | qemu_opt_get(opts, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
1573 | |
1574 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 1575 | error_report("Compression not supported for this file format"); |
c2abccec MK |
1576 | ret = -1; |
1577 | goto out; | |
efa84d43 KW |
1578 | } |
1579 | ||
83d0521a | 1580 | if (encryption) { |
15654a6d JS |
1581 | error_report("Compression and encryption not supported at " |
1582 | "the same time"); | |
c2abccec MK |
1583 | ret = -1; |
1584 | goto out; | |
efa84d43 | 1585 | } |
41521fa4 | 1586 | |
83d0521a CL |
1587 | if (preallocation |
1588 | && strcmp(preallocation, "off")) | |
41521fa4 KW |
1589 | { |
1590 | error_report("Compression and preallocation not supported at " | |
1591 | "the same time"); | |
1592 | ret = -1; | |
1593 | goto out; | |
1594 | } | |
efa84d43 KW |
1595 | } |
1596 | ||
b2e10493 AD |
1597 | if (!skip_create) { |
1598 | /* Create the new image */ | |
c282e1fd | 1599 | ret = bdrv_create(drv, out_filename, opts, &local_err); |
b2e10493 | 1600 | if (ret < 0) { |
cc84d90f HR |
1601 | error_report("%s: error while converting %s: %s", |
1602 | out_filename, out_fmt, error_get_pretty(local_err)); | |
1603 | error_free(local_err); | |
b2e10493 | 1604 | goto out; |
ea2384d3 FB |
1605 | } |
1606 | } | |
3b46e624 | 1607 | |
5a37b60a | 1608 | flags = min_sparse ? (BDRV_O_RDWR | BDRV_O_UNMAP) : BDRV_O_RDWR; |
c3993cdc | 1609 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1610 | if (ret < 0) { |
1611 | error_report("Invalid cache option: %s", cache); | |
bb9cd2ee | 1612 | goto out; |
661a0f71 FS |
1613 | } |
1614 | ||
7e7d56d9 MA |
1615 | out_blk = img_open("target", out_filename, out_fmt, flags, true, quiet); |
1616 | if (!out_blk) { | |
c2abccec MK |
1617 | ret = -1; |
1618 | goto out; | |
1619 | } | |
7e7d56d9 | 1620 | out_bs = blk_bs(out_blk); |
ea2384d3 | 1621 | |
926c2d23 AZ |
1622 | bs_i = 0; |
1623 | bs_offset = 0; | |
f2521c90 PL |
1624 | |
1625 | /* increase bufsectors from the default 4096 (2M) if opt_transfer_length | |
1626 | * or discard_alignment of the out_bs is greater. Limit to 32768 (16MB) | |
1627 | * as maximum. */ | |
1628 | bufsectors = MIN(32768, | |
1629 | MAX(bufsectors, MAX(out_bs->bl.opt_transfer_length, | |
1630 | out_bs->bl.discard_alignment)) | |
1631 | ); | |
1632 | ||
f1d3cd79 | 1633 | buf = blk_blockalign(out_blk, bufsectors * BDRV_SECTOR_SIZE); |
926c2d23 | 1634 | |
b2e10493 | 1635 | if (skip_create) { |
f1d3cd79 | 1636 | int64_t output_sectors = blk_nb_sectors(out_blk); |
43716fa8 | 1637 | if (output_sectors < 0) { |
b2e10493 | 1638 | error_report("unable to get output image length: %s\n", |
43716fa8 | 1639 | strerror(-output_sectors)); |
b2e10493 AD |
1640 | ret = -1; |
1641 | goto out; | |
43716fa8 | 1642 | } else if (output_sectors < total_sectors) { |
b2e10493 AD |
1643 | error_report("output file is smaller than input file"); |
1644 | ret = -1; | |
1645 | goto out; | |
1646 | } | |
1647 | } | |
1648 | ||
24f833cd PL |
1649 | cluster_sectors = 0; |
1650 | ret = bdrv_get_info(out_bs, &bdi); | |
1651 | if (ret < 0) { | |
1652 | if (compress) { | |
15654a6d | 1653 | error_report("could not get block driver info"); |
c2abccec MK |
1654 | goto out; |
1655 | } | |
24f833cd | 1656 | } else { |
85f49cad | 1657 | compress = compress || bdi.needs_compressed_writes; |
24f833cd PL |
1658 | cluster_sectors = bdi.cluster_size / BDRV_SECTOR_SIZE; |
1659 | } | |
1660 | ||
1661 | if (compress) { | |
1662 | if (cluster_sectors <= 0 || cluster_sectors > bufsectors) { | |
15654a6d | 1663 | error_report("invalid cluster size"); |
c2abccec MK |
1664 | ret = -1; |
1665 | goto out; | |
1666 | } | |
ea2384d3 | 1667 | sector_num = 0; |
6b837bc4 JS |
1668 | |
1669 | nb_sectors = total_sectors; | |
6b837bc4 | 1670 | |
ea2384d3 | 1671 | for(;;) { |
926c2d23 AZ |
1672 | int64_t bs_num; |
1673 | int remainder; | |
1674 | uint8_t *buf2; | |
1675 | ||
ea2384d3 FB |
1676 | nb_sectors = total_sectors - sector_num; |
1677 | if (nb_sectors <= 0) | |
1678 | break; | |
1679 | if (nb_sectors >= cluster_sectors) | |
1680 | n = cluster_sectors; | |
1681 | else | |
1682 | n = nb_sectors; | |
926c2d23 AZ |
1683 | |
1684 | bs_num = sector_num - bs_offset; | |
1685 | assert (bs_num >= 0); | |
1686 | remainder = n; | |
1687 | buf2 = buf; | |
1688 | while (remainder > 0) { | |
1689 | int nlow; | |
d739f1c4 MA |
1690 | while (bs_num == bs_sectors[bs_i]) { |
1691 | bs_offset += bs_sectors[bs_i]; | |
926c2d23 AZ |
1692 | bs_i++; |
1693 | assert (bs_i < bs_n); | |
926c2d23 | 1694 | bs_num = 0; |
0bfcd599 BS |
1695 | /* printf("changing part: sector_num=%" PRId64 ", " |
1696 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 | |
d739f1c4 | 1697 | "\n", sector_num, bs_i, bs_offset, bs_sectors[bs_i]); */ |
926c2d23 | 1698 | } |
d739f1c4 | 1699 | assert (bs_num < bs_sectors[bs_i]); |
926c2d23 | 1700 | |
d739f1c4 MA |
1701 | nlow = remainder > bs_sectors[bs_i] - bs_num |
1702 | ? bs_sectors[bs_i] - bs_num : remainder; | |
926c2d23 | 1703 | |
f1d3cd79 | 1704 | ret = blk_read(blk[bs_i], bs_num, buf2, nlow); |
c2abccec | 1705 | if (ret < 0) { |
3fba9d81 SH |
1706 | error_report("error while reading sector %" PRId64 ": %s", |
1707 | bs_num, strerror(-ret)); | |
c2abccec MK |
1708 | goto out; |
1709 | } | |
926c2d23 AZ |
1710 | |
1711 | buf2 += nlow * 512; | |
1712 | bs_num += nlow; | |
1713 | ||
1714 | remainder -= nlow; | |
1715 | } | |
1716 | assert (remainder == 0); | |
1717 | ||
54f106d5 | 1718 | if (!buffer_is_zero(buf, n * BDRV_SECTOR_SIZE)) { |
f1d3cd79 | 1719 | ret = blk_write_compressed(out_blk, sector_num, buf, n); |
c2abccec | 1720 | if (ret != 0) { |
3fba9d81 SH |
1721 | error_report("error while compressing sector %" PRId64 |
1722 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1723 | goto out; |
1724 | } | |
ea2384d3 FB |
1725 | } |
1726 | sector_num += n; | |
13c28af8 | 1727 | qemu_progress_print(100.0 * sector_num / total_sectors, 0); |
ea2384d3 | 1728 | } |
faea38e7 | 1729 | /* signal EOF to align */ |
f1d3cd79 | 1730 | blk_write_compressed(out_blk, 0, NULL, 0); |
ea2384d3 | 1731 | } else { |
802c3d4c PL |
1732 | int64_t sectors_to_read, sectors_read, sector_num_next_status; |
1733 | bool count_allocated_sectors; | |
11b6699a | 1734 | int has_zero_init = min_sparse ? bdrv_has_zero_init(out_bs) : 0; |
f2feebbd | 1735 | |
5a37b60a PL |
1736 | if (!has_zero_init && bdrv_can_write_zeroes_with_unmap(out_bs)) { |
1737 | ret = bdrv_make_zero(out_bs, BDRV_REQ_MAY_UNMAP); | |
1738 | if (ret < 0) { | |
1739 | goto out; | |
1740 | } | |
1741 | has_zero_init = 1; | |
1742 | } | |
1743 | ||
802c3d4c PL |
1744 | sectors_to_read = total_sectors; |
1745 | count_allocated_sectors = progress && (out_baseimg || has_zero_init); | |
1746 | restart: | |
f58c7b35 | 1747 | sector_num = 0; // total number of sectors converted so far |
802c3d4c PL |
1748 | sectors_read = 0; |
1749 | sector_num_next_status = 0; | |
6b837bc4 | 1750 | |
ea2384d3 FB |
1751 | for(;;) { |
1752 | nb_sectors = total_sectors - sector_num; | |
b8fb60da | 1753 | if (nb_sectors <= 0) { |
802c3d4c PL |
1754 | if (count_allocated_sectors) { |
1755 | sectors_to_read = sectors_read; | |
1756 | count_allocated_sectors = false; | |
1757 | goto restart; | |
1758 | } | |
13c28af8 | 1759 | ret = 0; |
ea2384d3 | 1760 | break; |
b8fb60da | 1761 | } |
926c2d23 | 1762 | |
d739f1c4 MA |
1763 | while (sector_num - bs_offset >= bs_sectors[bs_i]) { |
1764 | bs_offset += bs_sectors[bs_i]; | |
926c2d23 AZ |
1765 | bs_i ++; |
1766 | assert (bs_i < bs_n); | |
0bfcd599 BS |
1767 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
1768 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", | |
d739f1c4 | 1769 | sector_num, bs_i, bs_offset, bs_sectors[bs_i]); */ |
926c2d23 AZ |
1770 | } |
1771 | ||
13c28af8 PL |
1772 | if ((out_baseimg || has_zero_init) && |
1773 | sector_num >= sector_num_next_status) { | |
1774 | n = nb_sectors > INT_MAX ? INT_MAX : nb_sectors; | |
1775 | ret = bdrv_get_block_status(bs[bs_i], sector_num - bs_offset, | |
1776 | n, &n1); | |
e4a86f88 | 1777 | if (ret < 0) { |
13c28af8 PL |
1778 | error_report("error while reading block status of sector %" |
1779 | PRId64 ": %s", sector_num - bs_offset, | |
1780 | strerror(-ret)); | |
e4a86f88 PB |
1781 | goto out; |
1782 | } | |
13c28af8 PL |
1783 | /* If the output image is zero initialized, we are not working |
1784 | * on a shared base and the input is zero we can skip the next | |
1785 | * n1 sectors */ | |
1786 | if (has_zero_init && !out_baseimg && (ret & BDRV_BLOCK_ZERO)) { | |
e4a86f88 PB |
1787 | sector_num += n1; |
1788 | continue; | |
93c65b47 | 1789 | } |
13c28af8 PL |
1790 | /* If the output image is being created as a copy on write |
1791 | * image, assume that sectors which are unallocated in the | |
1792 | * input image are present in both the output's and input's | |
1793 | * base images (no need to copy them). */ | |
1794 | if (out_baseimg) { | |
1795 | if (!(ret & BDRV_BLOCK_DATA)) { | |
1796 | sector_num += n1; | |
1797 | continue; | |
1798 | } | |
1799 | /* The next 'n1' sectors are allocated in the input image. | |
1800 | * Copy only those as they may be followed by unallocated | |
1801 | * sectors. */ | |
1802 | nb_sectors = n1; | |
1803 | } | |
1804 | /* avoid redundant callouts to get_block_status */ | |
1805 | sector_num_next_status = sector_num + n1; | |
f58c7b35 TS |
1806 | } |
1807 | ||
f2521c90 | 1808 | n = MIN(nb_sectors, bufsectors); |
24f833cd PL |
1809 | |
1810 | /* round down request length to an aligned sector, but | |
1811 | * do not bother doing this on short requests. They happen | |
1812 | * when we found an all-zero area, and the next sector to | |
1813 | * write will not be sector_num + n. */ | |
1814 | if (cluster_sectors > 0 && n >= cluster_sectors) { | |
1815 | int64_t next_aligned_sector = (sector_num + n); | |
1816 | next_aligned_sector -= next_aligned_sector % cluster_sectors; | |
1817 | if (sector_num + n > next_aligned_sector) { | |
1818 | n = next_aligned_sector - sector_num; | |
1819 | } | |
1820 | } | |
1821 | ||
d739f1c4 | 1822 | n = MIN(n, bs_sectors[bs_i] - (sector_num - bs_offset)); |
13c28af8 | 1823 | |
802c3d4c PL |
1824 | sectors_read += n; |
1825 | if (count_allocated_sectors) { | |
1826 | sector_num += n; | |
1827 | continue; | |
1828 | } | |
1829 | ||
1830 | n1 = n; | |
f1d3cd79 | 1831 | ret = blk_read(blk[bs_i], sector_num - bs_offset, buf, n); |
c2abccec | 1832 | if (ret < 0) { |
3fba9d81 SH |
1833 | error_report("error while reading sector %" PRId64 ": %s", |
1834 | sector_num - bs_offset, strerror(-ret)); | |
c2abccec MK |
1835 | goto out; |
1836 | } | |
ea2384d3 FB |
1837 | /* NOTE: at the same time we convert, we do not write zero |
1838 | sectors to have a chance to compress the image. Ideally, we | |
1839 | should add a specific call to have the info to go faster */ | |
1840 | buf1 = buf; | |
1841 | while (n > 0) { | |
11212d8f | 1842 | if (!has_zero_init || |
a22f123c | 1843 | is_allocated_sectors_min(buf1, n, &n1, min_sparse)) { |
f1d3cd79 | 1844 | ret = blk_write(out_blk, sector_num, buf1, n1); |
c2abccec | 1845 | if (ret < 0) { |
3fba9d81 SH |
1846 | error_report("error while writing sector %" PRId64 |
1847 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1848 | goto out; |
1849 | } | |
ea2384d3 FB |
1850 | } |
1851 | sector_num += n1; | |
1852 | n -= n1; | |
1853 | buf1 += n1 * 512; | |
1854 | } | |
802c3d4c | 1855 | qemu_progress_print(100.0 * sectors_read / sectors_to_read, 0); |
ea2384d3 FB |
1856 | } |
1857 | } | |
c2abccec | 1858 | out: |
13c28af8 PL |
1859 | if (!ret) { |
1860 | qemu_progress_print(100, 0); | |
1861 | } | |
6b837bc4 | 1862 | qemu_progress_end(); |
83d0521a CL |
1863 | qemu_opts_del(opts); |
1864 | qemu_opts_free(create_opts); | |
bb1c0597 | 1865 | qemu_vfree(buf); |
fbf28a43 | 1866 | qemu_opts_del(sn_opts); |
26f54e9a | 1867 | blk_unref(out_blk); |
9ba10c95 | 1868 | g_free(bs); |
26f54e9a MA |
1869 | if (blk) { |
1870 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
1871 | blk_unref(blk[bs_i]); | |
1872 | } | |
1873 | g_free(blk); | |
1874 | } | |
d739f1c4 | 1875 | g_free(bs_sectors); |
64bb01aa KW |
1876 | fail_getopt: |
1877 | g_free(options); | |
1878 | ||
c2abccec MK |
1879 | if (ret) { |
1880 | return 1; | |
1881 | } | |
ea2384d3 FB |
1882 | return 0; |
1883 | } | |
1884 | ||
57d1a2b6 | 1885 | |
faea38e7 FB |
1886 | static void dump_snapshots(BlockDriverState *bs) |
1887 | { | |
1888 | QEMUSnapshotInfo *sn_tab, *sn; | |
1889 | int nb_sns, i; | |
faea38e7 FB |
1890 | |
1891 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1892 | if (nb_sns <= 0) | |
1893 | return; | |
1894 | printf("Snapshot list:\n"); | |
5b917044 WX |
1895 | bdrv_snapshot_dump(fprintf, stdout, NULL); |
1896 | printf("\n"); | |
faea38e7 FB |
1897 | for(i = 0; i < nb_sns; i++) { |
1898 | sn = &sn_tab[i]; | |
5b917044 WX |
1899 | bdrv_snapshot_dump(fprintf, stdout, sn); |
1900 | printf("\n"); | |
faea38e7 | 1901 | } |
7267c094 | 1902 | g_free(sn_tab); |
faea38e7 FB |
1903 | } |
1904 | ||
9699bf0d SH |
1905 | static void dump_json_image_info_list(ImageInfoList *list) |
1906 | { | |
4399c438 | 1907 | Error *local_err = NULL; |
9699bf0d SH |
1908 | QString *str; |
1909 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1910 | QObject *obj; | |
1911 | visit_type_ImageInfoList(qmp_output_get_visitor(ov), | |
4399c438 | 1912 | &list, NULL, &local_err); |
9699bf0d SH |
1913 | obj = qmp_output_get_qobject(ov); |
1914 | str = qobject_to_json_pretty(obj); | |
1915 | assert(str != NULL); | |
1916 | printf("%s\n", qstring_get_str(str)); | |
1917 | qobject_decref(obj); | |
1918 | qmp_output_visitor_cleanup(ov); | |
1919 | QDECREF(str); | |
1920 | } | |
1921 | ||
c054b3fd BC |
1922 | static void dump_json_image_info(ImageInfo *info) |
1923 | { | |
4399c438 | 1924 | Error *local_err = NULL; |
c054b3fd BC |
1925 | QString *str; |
1926 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1927 | QObject *obj; | |
1928 | visit_type_ImageInfo(qmp_output_get_visitor(ov), | |
4399c438 | 1929 | &info, NULL, &local_err); |
c054b3fd BC |
1930 | obj = qmp_output_get_qobject(ov); |
1931 | str = qobject_to_json_pretty(obj); | |
1932 | assert(str != NULL); | |
1933 | printf("%s\n", qstring_get_str(str)); | |
1934 | qobject_decref(obj); | |
1935 | qmp_output_visitor_cleanup(ov); | |
1936 | QDECREF(str); | |
1937 | } | |
1938 | ||
9699bf0d SH |
1939 | static void dump_human_image_info_list(ImageInfoList *list) |
1940 | { | |
1941 | ImageInfoList *elem; | |
1942 | bool delim = false; | |
1943 | ||
1944 | for (elem = list; elem; elem = elem->next) { | |
1945 | if (delim) { | |
1946 | printf("\n"); | |
1947 | } | |
1948 | delim = true; | |
1949 | ||
5b917044 | 1950 | bdrv_image_info_dump(fprintf, stdout, elem->value); |
9699bf0d SH |
1951 | } |
1952 | } | |
1953 | ||
1954 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
1955 | { | |
1956 | return strcmp(a, b) == 0; | |
1957 | } | |
1958 | ||
1959 | /** | |
1960 | * Open an image file chain and return an ImageInfoList | |
1961 | * | |
1962 | * @filename: topmost image filename | |
1963 | * @fmt: topmost image format (may be NULL to autodetect) | |
1964 | * @chain: true - enumerate entire backing file chain | |
1965 | * false - only topmost image file | |
1966 | * | |
1967 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
1968 | * image file. If there was an error a message will have been printed to | |
1969 | * stderr. | |
1970 | */ | |
1971 | static ImageInfoList *collect_image_info_list(const char *filename, | |
1972 | const char *fmt, | |
1973 | bool chain) | |
1974 | { | |
1975 | ImageInfoList *head = NULL; | |
1976 | ImageInfoList **last = &head; | |
1977 | GHashTable *filenames; | |
43526ec8 | 1978 | Error *err = NULL; |
9699bf0d SH |
1979 | |
1980 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
1981 | ||
1982 | while (filename) { | |
26f54e9a | 1983 | BlockBackend *blk; |
9699bf0d SH |
1984 | BlockDriverState *bs; |
1985 | ImageInfo *info; | |
1986 | ImageInfoList *elem; | |
1987 | ||
1988 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
1989 | error_report("Backing file '%s' creates an infinite loop.", | |
1990 | filename); | |
1991 | goto err; | |
1992 | } | |
1993 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
1994 | ||
7e7d56d9 MA |
1995 | blk = img_open("image", filename, fmt, |
1996 | BDRV_O_FLAGS | BDRV_O_NO_BACKING, false, false); | |
1997 | if (!blk) { | |
9699bf0d SH |
1998 | goto err; |
1999 | } | |
7e7d56d9 | 2000 | bs = blk_bs(blk); |
9699bf0d | 2001 | |
43526ec8 | 2002 | bdrv_query_image_info(bs, &info, &err); |
84d18f06 | 2003 | if (err) { |
565f65d2 | 2004 | error_report_err(err); |
26f54e9a | 2005 | blk_unref(blk); |
43526ec8 | 2006 | goto err; |
fb0ed453 | 2007 | } |
9699bf0d SH |
2008 | |
2009 | elem = g_new0(ImageInfoList, 1); | |
2010 | elem->value = info; | |
2011 | *last = elem; | |
2012 | last = &elem->next; | |
2013 | ||
26f54e9a | 2014 | blk_unref(blk); |
9699bf0d SH |
2015 | |
2016 | filename = fmt = NULL; | |
2017 | if (chain) { | |
2018 | if (info->has_full_backing_filename) { | |
2019 | filename = info->full_backing_filename; | |
2020 | } else if (info->has_backing_filename) { | |
2021 | filename = info->backing_filename; | |
2022 | } | |
2023 | if (info->has_backing_filename_format) { | |
2024 | fmt = info->backing_filename_format; | |
2025 | } | |
2026 | } | |
2027 | } | |
2028 | g_hash_table_destroy(filenames); | |
2029 | return head; | |
2030 | ||
2031 | err: | |
2032 | qapi_free_ImageInfoList(head); | |
2033 | g_hash_table_destroy(filenames); | |
2034 | return NULL; | |
2035 | } | |
2036 | ||
c054b3fd BC |
2037 | static int img_info(int argc, char **argv) |
2038 | { | |
2039 | int c; | |
2040 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 2041 | bool chain = false; |
c054b3fd | 2042 | const char *filename, *fmt, *output; |
9699bf0d | 2043 | ImageInfoList *list; |
c054b3fd | 2044 | |
ea2384d3 | 2045 | fmt = NULL; |
c054b3fd | 2046 | output = NULL; |
ea2384d3 | 2047 | for(;;) { |
c054b3fd BC |
2048 | int option_index = 0; |
2049 | static const struct option long_options[] = { | |
2050 | {"help", no_argument, 0, 'h'}, | |
2051 | {"format", required_argument, 0, 'f'}, | |
2052 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 2053 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
c054b3fd BC |
2054 | {0, 0, 0, 0} |
2055 | }; | |
2056 | c = getopt_long(argc, argv, "f:h", | |
2057 | long_options, &option_index); | |
b8fb60da | 2058 | if (c == -1) { |
ea2384d3 | 2059 | break; |
b8fb60da | 2060 | } |
ea2384d3 | 2061 | switch(c) { |
ef87394c | 2062 | case '?': |
ea2384d3 FB |
2063 | case 'h': |
2064 | help(); | |
2065 | break; | |
2066 | case 'f': | |
2067 | fmt = optarg; | |
2068 | break; | |
c054b3fd BC |
2069 | case OPTION_OUTPUT: |
2070 | output = optarg; | |
2071 | break; | |
9699bf0d SH |
2072 | case OPTION_BACKING_CHAIN: |
2073 | chain = true; | |
2074 | break; | |
ea2384d3 FB |
2075 | } |
2076 | } | |
fc11eb26 | 2077 | if (optind != argc - 1) { |
ac1307ab | 2078 | error_exit("Expecting one image file name"); |
b8fb60da | 2079 | } |
ea2384d3 FB |
2080 | filename = argv[optind++]; |
2081 | ||
c054b3fd BC |
2082 | if (output && !strcmp(output, "json")) { |
2083 | output_format = OFORMAT_JSON; | |
2084 | } else if (output && !strcmp(output, "human")) { | |
2085 | output_format = OFORMAT_HUMAN; | |
2086 | } else if (output) { | |
2087 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
2088 | return 1; |
2089 | } | |
c054b3fd | 2090 | |
9699bf0d SH |
2091 | list = collect_image_info_list(filename, fmt, chain); |
2092 | if (!list) { | |
c2abccec | 2093 | return 1; |
faea38e7 | 2094 | } |
c054b3fd | 2095 | |
c054b3fd BC |
2096 | switch (output_format) { |
2097 | case OFORMAT_HUMAN: | |
9699bf0d | 2098 | dump_human_image_info_list(list); |
c054b3fd BC |
2099 | break; |
2100 | case OFORMAT_JSON: | |
9699bf0d SH |
2101 | if (chain) { |
2102 | dump_json_image_info_list(list); | |
2103 | } else { | |
2104 | dump_json_image_info(list->value); | |
2105 | } | |
c054b3fd | 2106 | break; |
faea38e7 | 2107 | } |
c054b3fd | 2108 | |
9699bf0d | 2109 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
2110 | return 0; |
2111 | } | |
2112 | ||
4c93a13b PB |
2113 | |
2114 | typedef struct MapEntry { | |
2115 | int flags; | |
2116 | int depth; | |
2117 | int64_t start; | |
2118 | int64_t length; | |
2119 | int64_t offset; | |
2120 | BlockDriverState *bs; | |
2121 | } MapEntry; | |
2122 | ||
2123 | static void dump_map_entry(OutputFormat output_format, MapEntry *e, | |
2124 | MapEntry *next) | |
2125 | { | |
2126 | switch (output_format) { | |
2127 | case OFORMAT_HUMAN: | |
2128 | if ((e->flags & BDRV_BLOCK_DATA) && | |
2129 | !(e->flags & BDRV_BLOCK_OFFSET_VALID)) { | |
2130 | error_report("File contains external, encrypted or compressed clusters."); | |
2131 | exit(1); | |
2132 | } | |
2133 | if ((e->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) == BDRV_BLOCK_DATA) { | |
2134 | printf("%#-16"PRIx64"%#-16"PRIx64"%#-16"PRIx64"%s\n", | |
2135 | e->start, e->length, e->offset, e->bs->filename); | |
2136 | } | |
2137 | /* This format ignores the distinction between 0, ZERO and ZERO|DATA. | |
2138 | * Modify the flags here to allow more coalescing. | |
2139 | */ | |
2140 | if (next && | |
2141 | (next->flags & (BDRV_BLOCK_DATA|BDRV_BLOCK_ZERO)) != BDRV_BLOCK_DATA) { | |
2142 | next->flags &= ~BDRV_BLOCK_DATA; | |
2143 | next->flags |= BDRV_BLOCK_ZERO; | |
2144 | } | |
2145 | break; | |
2146 | case OFORMAT_JSON: | |
2147 | printf("%s{ \"start\": %"PRId64", \"length\": %"PRId64", \"depth\": %d," | |
2148 | " \"zero\": %s, \"data\": %s", | |
2149 | (e->start == 0 ? "[" : ",\n"), | |
2150 | e->start, e->length, e->depth, | |
2151 | (e->flags & BDRV_BLOCK_ZERO) ? "true" : "false", | |
2152 | (e->flags & BDRV_BLOCK_DATA) ? "true" : "false"); | |
2153 | if (e->flags & BDRV_BLOCK_OFFSET_VALID) { | |
c745bfb4 | 2154 | printf(", \"offset\": %"PRId64"", e->offset); |
4c93a13b PB |
2155 | } |
2156 | putchar('}'); | |
2157 | ||
2158 | if (!next) { | |
2159 | printf("]\n"); | |
2160 | } | |
2161 | break; | |
2162 | } | |
2163 | } | |
2164 | ||
2165 | static int get_block_status(BlockDriverState *bs, int64_t sector_num, | |
2166 | int nb_sectors, MapEntry *e) | |
2167 | { | |
2168 | int64_t ret; | |
2169 | int depth; | |
2170 | ||
2171 | /* As an optimization, we could cache the current range of unallocated | |
2172 | * clusters in each file of the chain, and avoid querying the same | |
2173 | * range repeatedly. | |
2174 | */ | |
2175 | ||
2176 | depth = 0; | |
2177 | for (;;) { | |
2178 | ret = bdrv_get_block_status(bs, sector_num, nb_sectors, &nb_sectors); | |
2179 | if (ret < 0) { | |
2180 | return ret; | |
2181 | } | |
2182 | assert(nb_sectors); | |
2183 | if (ret & (BDRV_BLOCK_ZERO|BDRV_BLOCK_DATA)) { | |
2184 | break; | |
2185 | } | |
2186 | bs = bs->backing_hd; | |
2187 | if (bs == NULL) { | |
2188 | ret = 0; | |
2189 | break; | |
2190 | } | |
2191 | ||
2192 | depth++; | |
2193 | } | |
2194 | ||
2195 | e->start = sector_num * BDRV_SECTOR_SIZE; | |
2196 | e->length = nb_sectors * BDRV_SECTOR_SIZE; | |
2197 | e->flags = ret & ~BDRV_BLOCK_OFFSET_MASK; | |
2198 | e->offset = ret & BDRV_BLOCK_OFFSET_MASK; | |
2199 | e->depth = depth; | |
2200 | e->bs = bs; | |
2201 | return 0; | |
2202 | } | |
2203 | ||
2204 | static int img_map(int argc, char **argv) | |
2205 | { | |
2206 | int c; | |
2207 | OutputFormat output_format = OFORMAT_HUMAN; | |
26f54e9a | 2208 | BlockBackend *blk; |
4c93a13b PB |
2209 | BlockDriverState *bs; |
2210 | const char *filename, *fmt, *output; | |
2211 | int64_t length; | |
2212 | MapEntry curr = { .length = 0 }, next; | |
2213 | int ret = 0; | |
2214 | ||
2215 | fmt = NULL; | |
2216 | output = NULL; | |
2217 | for (;;) { | |
2218 | int option_index = 0; | |
2219 | static const struct option long_options[] = { | |
2220 | {"help", no_argument, 0, 'h'}, | |
2221 | {"format", required_argument, 0, 'f'}, | |
2222 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
2223 | {0, 0, 0, 0} | |
2224 | }; | |
2225 | c = getopt_long(argc, argv, "f:h", | |
2226 | long_options, &option_index); | |
2227 | if (c == -1) { | |
2228 | break; | |
2229 | } | |
2230 | switch (c) { | |
2231 | case '?': | |
2232 | case 'h': | |
2233 | help(); | |
2234 | break; | |
2235 | case 'f': | |
2236 | fmt = optarg; | |
2237 | break; | |
2238 | case OPTION_OUTPUT: | |
2239 | output = optarg; | |
2240 | break; | |
2241 | } | |
2242 | } | |
ac1307ab FZ |
2243 | if (optind != argc - 1) { |
2244 | error_exit("Expecting one image file name"); | |
4c93a13b | 2245 | } |
ac1307ab | 2246 | filename = argv[optind]; |
4c93a13b PB |
2247 | |
2248 | if (output && !strcmp(output, "json")) { | |
2249 | output_format = OFORMAT_JSON; | |
2250 | } else if (output && !strcmp(output, "human")) { | |
2251 | output_format = OFORMAT_HUMAN; | |
2252 | } else if (output) { | |
2253 | error_report("--output must be used with human or json as argument."); | |
2254 | return 1; | |
2255 | } | |
2256 | ||
7e7d56d9 MA |
2257 | blk = img_open("image", filename, fmt, BDRV_O_FLAGS, true, false); |
2258 | if (!blk) { | |
2259 | return 1; | |
4c93a13b | 2260 | } |
7e7d56d9 | 2261 | bs = blk_bs(blk); |
4c93a13b PB |
2262 | |
2263 | if (output_format == OFORMAT_HUMAN) { | |
2264 | printf("%-16s%-16s%-16s%s\n", "Offset", "Length", "Mapped to", "File"); | |
2265 | } | |
2266 | ||
f1d3cd79 | 2267 | length = blk_getlength(blk); |
4c93a13b PB |
2268 | while (curr.start + curr.length < length) { |
2269 | int64_t nsectors_left; | |
2270 | int64_t sector_num; | |
2271 | int n; | |
2272 | ||
2273 | sector_num = (curr.start + curr.length) >> BDRV_SECTOR_BITS; | |
2274 | ||
2275 | /* Probe up to 1 GiB at a time. */ | |
2276 | nsectors_left = DIV_ROUND_UP(length, BDRV_SECTOR_SIZE) - sector_num; | |
2277 | n = MIN(1 << (30 - BDRV_SECTOR_BITS), nsectors_left); | |
2278 | ret = get_block_status(bs, sector_num, n, &next); | |
2279 | ||
2280 | if (ret < 0) { | |
2281 | error_report("Could not read file metadata: %s", strerror(-ret)); | |
2282 | goto out; | |
2283 | } | |
2284 | ||
2285 | if (curr.length != 0 && curr.flags == next.flags && | |
2286 | curr.depth == next.depth && | |
2287 | ((curr.flags & BDRV_BLOCK_OFFSET_VALID) == 0 || | |
2288 | curr.offset + curr.length == next.offset)) { | |
2289 | curr.length += next.length; | |
2290 | continue; | |
2291 | } | |
2292 | ||
2293 | if (curr.length > 0) { | |
2294 | dump_map_entry(output_format, &curr, &next); | |
2295 | } | |
2296 | curr = next; | |
2297 | } | |
2298 | ||
2299 | dump_map_entry(output_format, &curr, NULL); | |
2300 | ||
2301 | out: | |
26f54e9a | 2302 | blk_unref(blk); |
4c93a13b PB |
2303 | return ret < 0; |
2304 | } | |
2305 | ||
f7b4a940 AL |
2306 | #define SNAPSHOT_LIST 1 |
2307 | #define SNAPSHOT_CREATE 2 | |
2308 | #define SNAPSHOT_APPLY 3 | |
2309 | #define SNAPSHOT_DELETE 4 | |
2310 | ||
153859be | 2311 | static int img_snapshot(int argc, char **argv) |
f7b4a940 | 2312 | { |
26f54e9a | 2313 | BlockBackend *blk; |
f7b4a940 AL |
2314 | BlockDriverState *bs; |
2315 | QEMUSnapshotInfo sn; | |
2316 | char *filename, *snapshot_name = NULL; | |
c2abccec | 2317 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
2318 | int action = 0; |
2319 | qemu_timeval tv; | |
f382d43a | 2320 | bool quiet = false; |
a89d89d3 | 2321 | Error *err = NULL; |
f7b4a940 | 2322 | |
710da702 | 2323 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
2324 | /* Parse commandline parameters */ |
2325 | for(;;) { | |
f382d43a | 2326 | c = getopt(argc, argv, "la:c:d:hq"); |
b8fb60da | 2327 | if (c == -1) { |
f7b4a940 | 2328 | break; |
b8fb60da | 2329 | } |
f7b4a940 | 2330 | switch(c) { |
ef87394c | 2331 | case '?': |
f7b4a940 AL |
2332 | case 'h': |
2333 | help(); | |
153859be | 2334 | return 0; |
f7b4a940 AL |
2335 | case 'l': |
2336 | if (action) { | |
ac1307ab | 2337 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2338 | return 0; |
f7b4a940 AL |
2339 | } |
2340 | action = SNAPSHOT_LIST; | |
f5edb014 | 2341 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
2342 | break; |
2343 | case 'a': | |
2344 | if (action) { | |
ac1307ab | 2345 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2346 | return 0; |
f7b4a940 AL |
2347 | } |
2348 | action = SNAPSHOT_APPLY; | |
2349 | snapshot_name = optarg; | |
2350 | break; | |
2351 | case 'c': | |
2352 | if (action) { | |
ac1307ab | 2353 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2354 | return 0; |
f7b4a940 AL |
2355 | } |
2356 | action = SNAPSHOT_CREATE; | |
2357 | snapshot_name = optarg; | |
2358 | break; | |
2359 | case 'd': | |
2360 | if (action) { | |
ac1307ab | 2361 | error_exit("Cannot mix '-l', '-a', '-c', '-d'"); |
153859be | 2362 | return 0; |
f7b4a940 AL |
2363 | } |
2364 | action = SNAPSHOT_DELETE; | |
2365 | snapshot_name = optarg; | |
2366 | break; | |
f382d43a MR |
2367 | case 'q': |
2368 | quiet = true; | |
2369 | break; | |
f7b4a940 AL |
2370 | } |
2371 | } | |
2372 | ||
fc11eb26 | 2373 | if (optind != argc - 1) { |
ac1307ab | 2374 | error_exit("Expecting one image file name"); |
b8fb60da | 2375 | } |
f7b4a940 AL |
2376 | filename = argv[optind++]; |
2377 | ||
2378 | /* Open the image */ | |
7e7d56d9 MA |
2379 | blk = img_open("image", filename, NULL, bdrv_oflags, true, quiet); |
2380 | if (!blk) { | |
2381 | return 1; | |
c2abccec | 2382 | } |
7e7d56d9 | 2383 | bs = blk_bs(blk); |
f7b4a940 AL |
2384 | |
2385 | /* Perform the requested action */ | |
2386 | switch(action) { | |
2387 | case SNAPSHOT_LIST: | |
2388 | dump_snapshots(bs); | |
2389 | break; | |
2390 | ||
2391 | case SNAPSHOT_CREATE: | |
2392 | memset(&sn, 0, sizeof(sn)); | |
2393 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
2394 | ||
2395 | qemu_gettimeofday(&tv); | |
2396 | sn.date_sec = tv.tv_sec; | |
2397 | sn.date_nsec = tv.tv_usec * 1000; | |
2398 | ||
2399 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 2400 | if (ret) { |
15654a6d | 2401 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 2402 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2403 | } |
f7b4a940 AL |
2404 | break; |
2405 | ||
2406 | case SNAPSHOT_APPLY: | |
2407 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 2408 | if (ret) { |
15654a6d | 2409 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 2410 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 2411 | } |
f7b4a940 AL |
2412 | break; |
2413 | ||
2414 | case SNAPSHOT_DELETE: | |
a89d89d3 | 2415 | bdrv_snapshot_delete_by_id_or_name(bs, snapshot_name, &err); |
84d18f06 | 2416 | if (err) { |
a89d89d3 WX |
2417 | error_report("Could not delete snapshot '%s': (%s)", |
2418 | snapshot_name, error_get_pretty(err)); | |
2419 | error_free(err); | |
2420 | ret = 1; | |
b8fb60da | 2421 | } |
f7b4a940 AL |
2422 | break; |
2423 | } | |
2424 | ||
2425 | /* Cleanup */ | |
26f54e9a | 2426 | blk_unref(blk); |
c2abccec MK |
2427 | if (ret) { |
2428 | return 1; | |
2429 | } | |
153859be | 2430 | return 0; |
f7b4a940 AL |
2431 | } |
2432 | ||
3e85c6fd KW |
2433 | static int img_rebase(int argc, char **argv) |
2434 | { | |
26f54e9a | 2435 | BlockBackend *blk = NULL, *blk_old_backing = NULL, *blk_new_backing = NULL; |
f1d3cd79 | 2436 | BlockDriverState *bs = NULL; |
3e85c6fd | 2437 | char *filename; |
40055951 HR |
2438 | const char *fmt, *cache, *src_cache, *out_basefmt, *out_baseimg; |
2439 | int c, flags, src_flags, ret; | |
3e85c6fd | 2440 | int unsafe = 0; |
6b837bc4 | 2441 | int progress = 0; |
f382d43a | 2442 | bool quiet = false; |
34b5d2c6 | 2443 | Error *local_err = NULL; |
3e85c6fd KW |
2444 | |
2445 | /* Parse commandline parameters */ | |
e53dbee0 | 2446 | fmt = NULL; |
661a0f71 | 2447 | cache = BDRV_DEFAULT_CACHE; |
40055951 | 2448 | src_cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
2449 | out_baseimg = NULL; |
2450 | out_basefmt = NULL; | |
3e85c6fd | 2451 | for(;;) { |
40055951 | 2452 | c = getopt(argc, argv, "hf:F:b:upt:T:q"); |
b8fb60da | 2453 | if (c == -1) { |
3e85c6fd | 2454 | break; |
b8fb60da | 2455 | } |
3e85c6fd | 2456 | switch(c) { |
ef87394c | 2457 | case '?': |
3e85c6fd KW |
2458 | case 'h': |
2459 | help(); | |
2460 | return 0; | |
e53dbee0 KW |
2461 | case 'f': |
2462 | fmt = optarg; | |
2463 | break; | |
3e85c6fd KW |
2464 | case 'F': |
2465 | out_basefmt = optarg; | |
2466 | break; | |
2467 | case 'b': | |
2468 | out_baseimg = optarg; | |
2469 | break; | |
2470 | case 'u': | |
2471 | unsafe = 1; | |
2472 | break; | |
6b837bc4 JS |
2473 | case 'p': |
2474 | progress = 1; | |
2475 | break; | |
661a0f71 FS |
2476 | case 't': |
2477 | cache = optarg; | |
2478 | break; | |
40055951 HR |
2479 | case 'T': |
2480 | src_cache = optarg; | |
2481 | break; | |
f382d43a MR |
2482 | case 'q': |
2483 | quiet = true; | |
2484 | break; | |
3e85c6fd KW |
2485 | } |
2486 | } | |
2487 | ||
f382d43a MR |
2488 | if (quiet) { |
2489 | progress = 0; | |
2490 | } | |
2491 | ||
ac1307ab FZ |
2492 | if (optind != argc - 1) { |
2493 | error_exit("Expecting one image file name"); | |
2494 | } | |
2495 | if (!unsafe && !out_baseimg) { | |
2496 | error_exit("Must specify backing file (-b) or use unsafe mode (-u)"); | |
b8fb60da | 2497 | } |
3e85c6fd KW |
2498 | filename = argv[optind++]; |
2499 | ||
6b837bc4 JS |
2500 | qemu_progress_init(progress, 2.0); |
2501 | qemu_progress_print(0, 100); | |
2502 | ||
661a0f71 | 2503 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
c3993cdc | 2504 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
2505 | if (ret < 0) { |
2506 | error_report("Invalid cache option: %s", cache); | |
40ed35a3 | 2507 | goto out; |
661a0f71 FS |
2508 | } |
2509 | ||
40055951 HR |
2510 | src_flags = BDRV_O_FLAGS; |
2511 | ret = bdrv_parse_cache_flags(src_cache, &src_flags); | |
2512 | if (ret < 0) { | |
2513 | error_report("Invalid source cache option: %s", src_cache); | |
40ed35a3 | 2514 | goto out; |
40055951 HR |
2515 | } |
2516 | ||
3e85c6fd KW |
2517 | /* |
2518 | * Open the images. | |
2519 | * | |
2520 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
2521 | * the reference to a renamed or moved backing file. | |
2522 | */ | |
7e7d56d9 MA |
2523 | blk = img_open("image", filename, fmt, flags, true, quiet); |
2524 | if (!blk) { | |
40ed35a3 SH |
2525 | ret = -1; |
2526 | goto out; | |
c2abccec | 2527 | } |
7e7d56d9 | 2528 | bs = blk_bs(blk); |
3e85c6fd | 2529 | |
3e85c6fd | 2530 | if (out_basefmt != NULL) { |
644483d9 | 2531 | if (bdrv_find_format(out_basefmt) == NULL) { |
15654a6d | 2532 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
2533 | ret = -1; |
2534 | goto out; | |
3e85c6fd KW |
2535 | } |
2536 | } | |
2537 | ||
2538 | /* For safe rebasing we need to compare old and new backing file */ | |
40ed35a3 | 2539 | if (!unsafe) { |
9a29e18f | 2540 | char backing_name[PATH_MAX]; |
644483d9 HR |
2541 | QDict *options = NULL; |
2542 | ||
2543 | if (bs->backing_format[0] != '\0') { | |
2544 | options = qdict_new(); | |
2545 | qdict_put(options, "driver", qstring_from_str(bs->backing_format)); | |
2546 | } | |
3e85c6fd | 2547 | |
3e85c6fd | 2548 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); |
644483d9 HR |
2549 | blk_old_backing = blk_new_open("old_backing", backing_name, NULL, |
2550 | options, src_flags, &local_err); | |
2551 | if (!blk_old_backing) { | |
34b5d2c6 HR |
2552 | error_report("Could not open old backing file '%s': %s", |
2553 | backing_name, error_get_pretty(local_err)); | |
2554 | error_free(local_err); | |
c2abccec | 2555 | goto out; |
3e85c6fd | 2556 | } |
644483d9 | 2557 | |
a616673d | 2558 | if (out_baseimg[0]) { |
644483d9 HR |
2559 | if (out_basefmt) { |
2560 | options = qdict_new(); | |
2561 | qdict_put(options, "driver", qstring_from_str(out_basefmt)); | |
2562 | } else { | |
2563 | options = NULL; | |
2564 | } | |
2565 | ||
2566 | blk_new_backing = blk_new_open("new_backing", out_baseimg, NULL, | |
2567 | options, src_flags, &local_err); | |
2568 | if (!blk_new_backing) { | |
34b5d2c6 HR |
2569 | error_report("Could not open new backing file '%s': %s", |
2570 | out_baseimg, error_get_pretty(local_err)); | |
2571 | error_free(local_err); | |
a616673d AB |
2572 | goto out; |
2573 | } | |
3e85c6fd KW |
2574 | } |
2575 | } | |
2576 | ||
2577 | /* | |
2578 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
2579 | * accesses go to the backing file. We must therefore compare this cluster | |
2580 | * in the old and new backing file, and if they differ we need to copy it | |
2581 | * from the old backing file into the COW file. | |
2582 | * | |
2583 | * If qemu-img crashes during this step, no harm is done. The content of | |
2584 | * the image is the same as the original one at any time. | |
2585 | */ | |
2586 | if (!unsafe) { | |
52bf1e72 MA |
2587 | int64_t num_sectors; |
2588 | int64_t old_backing_num_sectors; | |
2589 | int64_t new_backing_num_sectors = 0; | |
3e85c6fd | 2590 | uint64_t sector; |
cc60e327 | 2591 | int n; |
d6771bfa T |
2592 | uint8_t * buf_old; |
2593 | uint8_t * buf_new; | |
1f710495 | 2594 | float local_progress = 0; |
d6771bfa | 2595 | |
f1d3cd79 HR |
2596 | buf_old = blk_blockalign(blk, IO_BUF_SIZE); |
2597 | buf_new = blk_blockalign(blk, IO_BUF_SIZE); | |
3e85c6fd | 2598 | |
f1d3cd79 | 2599 | num_sectors = blk_nb_sectors(blk); |
52bf1e72 MA |
2600 | if (num_sectors < 0) { |
2601 | error_report("Could not get size of '%s': %s", | |
2602 | filename, strerror(-num_sectors)); | |
2603 | ret = -1; | |
2604 | goto out; | |
2605 | } | |
f1d3cd79 | 2606 | old_backing_num_sectors = blk_nb_sectors(blk_old_backing); |
52bf1e72 | 2607 | if (old_backing_num_sectors < 0) { |
9a29e18f | 2608 | char backing_name[PATH_MAX]; |
52bf1e72 MA |
2609 | |
2610 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
2611 | error_report("Could not get size of '%s': %s", | |
2612 | backing_name, strerror(-old_backing_num_sectors)); | |
2613 | ret = -1; | |
2614 | goto out; | |
2615 | } | |
f1d3cd79 HR |
2616 | if (blk_new_backing) { |
2617 | new_backing_num_sectors = blk_nb_sectors(blk_new_backing); | |
52bf1e72 MA |
2618 | if (new_backing_num_sectors < 0) { |
2619 | error_report("Could not get size of '%s': %s", | |
2620 | out_baseimg, strerror(-new_backing_num_sectors)); | |
2621 | ret = -1; | |
2622 | goto out; | |
2623 | } | |
a616673d | 2624 | } |
3e85c6fd | 2625 | |
1f710495 KW |
2626 | if (num_sectors != 0) { |
2627 | local_progress = (float)100 / | |
2628 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
2629 | } | |
2630 | ||
3e85c6fd KW |
2631 | for (sector = 0; sector < num_sectors; sector += n) { |
2632 | ||
2633 | /* How many sectors can we handle with the next read? */ | |
2634 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
2635 | n = (IO_BUF_SIZE / 512); | |
2636 | } else { | |
2637 | n = num_sectors - sector; | |
2638 | } | |
2639 | ||
2640 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 | 2641 | ret = bdrv_is_allocated(bs, sector, n, &n); |
d663640c PB |
2642 | if (ret < 0) { |
2643 | error_report("error while reading image metadata: %s", | |
2644 | strerror(-ret)); | |
2645 | goto out; | |
2646 | } | |
cc60e327 | 2647 | if (ret) { |
3e85c6fd KW |
2648 | continue; |
2649 | } | |
2650 | ||
87a1b3e3 KW |
2651 | /* |
2652 | * Read old and new backing file and take into consideration that | |
2653 | * backing files may be smaller than the COW image. | |
2654 | */ | |
2655 | if (sector >= old_backing_num_sectors) { | |
2656 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
2657 | } else { | |
2658 | if (sector + n > old_backing_num_sectors) { | |
2659 | n = old_backing_num_sectors - sector; | |
2660 | } | |
2661 | ||
f1d3cd79 | 2662 | ret = blk_read(blk_old_backing, sector, buf_old, n); |
87a1b3e3 KW |
2663 | if (ret < 0) { |
2664 | error_report("error while reading from old backing file"); | |
2665 | goto out; | |
2666 | } | |
3e85c6fd | 2667 | } |
87a1b3e3 | 2668 | |
f1d3cd79 | 2669 | if (sector >= new_backing_num_sectors || !blk_new_backing) { |
87a1b3e3 KW |
2670 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
2671 | } else { | |
2672 | if (sector + n > new_backing_num_sectors) { | |
2673 | n = new_backing_num_sectors - sector; | |
2674 | } | |
2675 | ||
f1d3cd79 | 2676 | ret = blk_read(blk_new_backing, sector, buf_new, n); |
87a1b3e3 KW |
2677 | if (ret < 0) { |
2678 | error_report("error while reading from new backing file"); | |
2679 | goto out; | |
2680 | } | |
3e85c6fd KW |
2681 | } |
2682 | ||
2683 | /* If they differ, we need to write to the COW file */ | |
2684 | uint64_t written = 0; | |
2685 | ||
2686 | while (written < n) { | |
2687 | int pnum; | |
2688 | ||
2689 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 2690 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd | 2691 | { |
f1d3cd79 HR |
2692 | ret = blk_write(blk, sector + written, |
2693 | buf_old + written * 512, pnum); | |
3e85c6fd | 2694 | if (ret < 0) { |
15654a6d | 2695 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 2696 | strerror(-ret)); |
c2abccec | 2697 | goto out; |
3e85c6fd KW |
2698 | } |
2699 | } | |
2700 | ||
2701 | written += pnum; | |
2702 | } | |
6b837bc4 | 2703 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 2704 | } |
d6771bfa | 2705 | |
bb1c0597 KW |
2706 | qemu_vfree(buf_old); |
2707 | qemu_vfree(buf_new); | |
3e85c6fd KW |
2708 | } |
2709 | ||
2710 | /* | |
2711 | * Change the backing file. All clusters that are different from the old | |
2712 | * backing file are overwritten in the COW file now, so the visible content | |
2713 | * doesn't change when we switch the backing file. | |
2714 | */ | |
a616673d AB |
2715 | if (out_baseimg && *out_baseimg) { |
2716 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
2717 | } else { | |
2718 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
2719 | } | |
2720 | ||
3e85c6fd | 2721 | if (ret == -ENOSPC) { |
15654a6d JS |
2722 | error_report("Could not change the backing file to '%s': No " |
2723 | "space left in the file header", out_baseimg); | |
3e85c6fd | 2724 | } else if (ret < 0) { |
15654a6d | 2725 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
2726 | out_baseimg, strerror(-ret)); |
2727 | } | |
2728 | ||
6b837bc4 | 2729 | qemu_progress_print(100, 0); |
3e85c6fd KW |
2730 | /* |
2731 | * TODO At this point it is possible to check if any clusters that are | |
2732 | * allocated in the COW file are the same in the backing file. If so, they | |
2733 | * could be dropped from the COW file. Don't do this before switching the | |
2734 | * backing file, in case of a crash this would lead to corruption. | |
2735 | */ | |
c2abccec | 2736 | out: |
6b837bc4 | 2737 | qemu_progress_end(); |
3e85c6fd KW |
2738 | /* Cleanup */ |
2739 | if (!unsafe) { | |
26f54e9a | 2740 | blk_unref(blk_old_backing); |
26f54e9a | 2741 | blk_unref(blk_new_backing); |
3e85c6fd KW |
2742 | } |
2743 | ||
26f54e9a | 2744 | blk_unref(blk); |
c2abccec MK |
2745 | if (ret) { |
2746 | return 1; | |
2747 | } | |
3e85c6fd KW |
2748 | return 0; |
2749 | } | |
2750 | ||
ae6b0ed6 SH |
2751 | static int img_resize(int argc, char **argv) |
2752 | { | |
2753 | int c, ret, relative; | |
2754 | const char *filename, *fmt, *size; | |
2755 | int64_t n, total_size; | |
f382d43a | 2756 | bool quiet = false; |
26f54e9a | 2757 | BlockBackend *blk = NULL; |
20caf0f7 DXW |
2758 | QemuOpts *param; |
2759 | static QemuOptsList resize_options = { | |
2760 | .name = "resize_options", | |
2761 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
2762 | .desc = { | |
2763 | { | |
2764 | .name = BLOCK_OPT_SIZE, | |
2765 | .type = QEMU_OPT_SIZE, | |
2766 | .help = "Virtual disk size" | |
2767 | }, { | |
2768 | /* end of list */ | |
2769 | } | |
ae6b0ed6 | 2770 | }, |
ae6b0ed6 SH |
2771 | }; |
2772 | ||
e80fec7f KW |
2773 | /* Remove size from argv manually so that negative numbers are not treated |
2774 | * as options by getopt. */ | |
2775 | if (argc < 3) { | |
ac1307ab | 2776 | error_exit("Not enough arguments"); |
e80fec7f KW |
2777 | return 1; |
2778 | } | |
2779 | ||
2780 | size = argv[--argc]; | |
2781 | ||
2782 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
2783 | fmt = NULL; |
2784 | for(;;) { | |
f382d43a | 2785 | c = getopt(argc, argv, "f:hq"); |
ae6b0ed6 SH |
2786 | if (c == -1) { |
2787 | break; | |
2788 | } | |
2789 | switch(c) { | |
ef87394c | 2790 | case '?': |
ae6b0ed6 SH |
2791 | case 'h': |
2792 | help(); | |
2793 | break; | |
2794 | case 'f': | |
2795 | fmt = optarg; | |
2796 | break; | |
f382d43a MR |
2797 | case 'q': |
2798 | quiet = true; | |
2799 | break; | |
ae6b0ed6 SH |
2800 | } |
2801 | } | |
fc11eb26 | 2802 | if (optind != argc - 1) { |
ac1307ab | 2803 | error_exit("Expecting one image file name"); |
ae6b0ed6 SH |
2804 | } |
2805 | filename = argv[optind++]; | |
ae6b0ed6 SH |
2806 | |
2807 | /* Choose grow, shrink, or absolute resize mode */ | |
2808 | switch (size[0]) { | |
2809 | case '+': | |
2810 | relative = 1; | |
2811 | size++; | |
2812 | break; | |
2813 | case '-': | |
2814 | relative = -1; | |
2815 | size++; | |
2816 | break; | |
2817 | default: | |
2818 | relative = 0; | |
2819 | break; | |
2820 | } | |
2821 | ||
2822 | /* Parse size */ | |
87ea75d5 | 2823 | param = qemu_opts_create(&resize_options, NULL, 0, &error_abort); |
20caf0f7 | 2824 | if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) { |
ae6b0ed6 | 2825 | /* Error message already printed when size parsing fails */ |
2a81998a | 2826 | ret = -1; |
20caf0f7 | 2827 | qemu_opts_del(param); |
2a81998a | 2828 | goto out; |
ae6b0ed6 | 2829 | } |
20caf0f7 DXW |
2830 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
2831 | qemu_opts_del(param); | |
ae6b0ed6 | 2832 | |
7e7d56d9 MA |
2833 | blk = img_open("image", filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, |
2834 | true, quiet); | |
2835 | if (!blk) { | |
2a81998a JS |
2836 | ret = -1; |
2837 | goto out; | |
c2abccec | 2838 | } |
ae6b0ed6 SH |
2839 | |
2840 | if (relative) { | |
f1d3cd79 | 2841 | total_size = blk_getlength(blk) + n * relative; |
ae6b0ed6 SH |
2842 | } else { |
2843 | total_size = n; | |
2844 | } | |
2845 | if (total_size <= 0) { | |
15654a6d | 2846 | error_report("New image size must be positive"); |
c2abccec MK |
2847 | ret = -1; |
2848 | goto out; | |
ae6b0ed6 SH |
2849 | } |
2850 | ||
f1d3cd79 | 2851 | ret = blk_truncate(blk, total_size); |
ae6b0ed6 SH |
2852 | switch (ret) { |
2853 | case 0: | |
f382d43a | 2854 | qprintf(quiet, "Image resized.\n"); |
ae6b0ed6 SH |
2855 | break; |
2856 | case -ENOTSUP: | |
259b2173 | 2857 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
2858 | break; |
2859 | case -EACCES: | |
15654a6d | 2860 | error_report("Image is read-only"); |
ae6b0ed6 SH |
2861 | break; |
2862 | default: | |
15654a6d | 2863 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
2864 | break; |
2865 | } | |
c2abccec | 2866 | out: |
26f54e9a | 2867 | blk_unref(blk); |
c2abccec MK |
2868 | if (ret) { |
2869 | return 1; | |
2870 | } | |
ae6b0ed6 SH |
2871 | return 0; |
2872 | } | |
2873 | ||
76a3a34d HR |
2874 | static void amend_status_cb(BlockDriverState *bs, |
2875 | int64_t offset, int64_t total_work_size) | |
2876 | { | |
2877 | qemu_progress_print(100.f * offset / total_work_size, 0); | |
2878 | } | |
2879 | ||
6f176b48 HR |
2880 | static int img_amend(int argc, char **argv) |
2881 | { | |
2882 | int c, ret = 0; | |
2883 | char *options = NULL; | |
83d0521a CL |
2884 | QemuOptsList *create_opts = NULL; |
2885 | QemuOpts *opts = NULL; | |
bd39e6ed HR |
2886 | const char *fmt = NULL, *filename, *cache; |
2887 | int flags; | |
76a3a34d | 2888 | bool quiet = false, progress = false; |
26f54e9a | 2889 | BlockBackend *blk = NULL; |
6f176b48 HR |
2890 | BlockDriverState *bs = NULL; |
2891 | ||
bd39e6ed | 2892 | cache = BDRV_DEFAULT_CACHE; |
6f176b48 | 2893 | for (;;) { |
76a3a34d | 2894 | c = getopt(argc, argv, "ho:f:t:pq"); |
6f176b48 HR |
2895 | if (c == -1) { |
2896 | break; | |
2897 | } | |
2898 | ||
2899 | switch (c) { | |
2900 | case 'h': | |
2901 | case '?': | |
2902 | help(); | |
2903 | break; | |
2904 | case 'o': | |
626f84f3 KW |
2905 | if (!is_valid_option_list(optarg)) { |
2906 | error_report("Invalid option list: %s", optarg); | |
2907 | ret = -1; | |
2908 | goto out; | |
2909 | } | |
2910 | if (!options) { | |
2911 | options = g_strdup(optarg); | |
2912 | } else { | |
2913 | char *old_options = options; | |
2914 | options = g_strdup_printf("%s,%s", options, optarg); | |
2915 | g_free(old_options); | |
2916 | } | |
6f176b48 HR |
2917 | break; |
2918 | case 'f': | |
2919 | fmt = optarg; | |
2920 | break; | |
bd39e6ed HR |
2921 | case 't': |
2922 | cache = optarg; | |
2923 | break; | |
76a3a34d HR |
2924 | case 'p': |
2925 | progress = true; | |
2926 | break; | |
6f176b48 HR |
2927 | case 'q': |
2928 | quiet = true; | |
2929 | break; | |
2930 | } | |
2931 | } | |
2932 | ||
a283cb6e | 2933 | if (!options) { |
ac1307ab | 2934 | error_exit("Must specify options (-o)"); |
6f176b48 HR |
2935 | } |
2936 | ||
76a3a34d HR |
2937 | if (quiet) { |
2938 | progress = false; | |
2939 | } | |
2940 | qemu_progress_init(progress, 1.0); | |
2941 | ||
a283cb6e KW |
2942 | filename = (optind == argc - 1) ? argv[argc - 1] : NULL; |
2943 | if (fmt && has_help_option(options)) { | |
2944 | /* If a format is explicitly specified (and possibly no filename is | |
2945 | * given), print option help here */ | |
2946 | ret = print_block_option_help(filename, fmt); | |
2947 | goto out; | |
6f176b48 HR |
2948 | } |
2949 | ||
a283cb6e | 2950 | if (optind != argc - 1) { |
b2f27e44 HR |
2951 | error_report("Expecting one image file name"); |
2952 | ret = -1; | |
2953 | goto out; | |
a283cb6e | 2954 | } |
6f176b48 | 2955 | |
bd39e6ed HR |
2956 | flags = BDRV_O_FLAGS | BDRV_O_RDWR; |
2957 | ret = bdrv_parse_cache_flags(cache, &flags); | |
2958 | if (ret < 0) { | |
2959 | error_report("Invalid cache option: %s", cache); | |
2960 | goto out; | |
2961 | } | |
2962 | ||
7e7d56d9 MA |
2963 | blk = img_open("image", filename, fmt, flags, true, quiet); |
2964 | if (!blk) { | |
6f176b48 HR |
2965 | ret = -1; |
2966 | goto out; | |
2967 | } | |
7e7d56d9 | 2968 | bs = blk_bs(blk); |
6f176b48 HR |
2969 | |
2970 | fmt = bs->drv->format_name; | |
2971 | ||
626f84f3 | 2972 | if (has_help_option(options)) { |
a283cb6e | 2973 | /* If the format was auto-detected, print option help here */ |
6f176b48 HR |
2974 | ret = print_block_option_help(filename, fmt); |
2975 | goto out; | |
2976 | } | |
2977 | ||
b2439d26 HR |
2978 | if (!bs->drv->create_opts) { |
2979 | error_report("Format driver '%s' does not support any options to amend", | |
2980 | fmt); | |
2981 | ret = -1; | |
2982 | goto out; | |
2983 | } | |
2984 | ||
c282e1fd | 2985 | create_opts = qemu_opts_append(create_opts, bs->drv->create_opts); |
83d0521a CL |
2986 | opts = qemu_opts_create(create_opts, NULL, 0, &error_abort); |
2987 | if (options && qemu_opts_do_parse(opts, options, NULL)) { | |
6f176b48 HR |
2988 | error_report("Invalid options for file format '%s'", fmt); |
2989 | ret = -1; | |
2990 | goto out; | |
2991 | } | |
2992 | ||
76a3a34d HR |
2993 | /* In case the driver does not call amend_status_cb() */ |
2994 | qemu_progress_print(0.f, 0); | |
2995 | ret = bdrv_amend_options(bs, opts, &amend_status_cb); | |
2996 | qemu_progress_print(100.f, 0); | |
6f176b48 HR |
2997 | if (ret < 0) { |
2998 | error_report("Error while amending options: %s", strerror(-ret)); | |
2999 | goto out; | |
3000 | } | |
3001 | ||
3002 | out: | |
76a3a34d HR |
3003 | qemu_progress_end(); |
3004 | ||
26f54e9a | 3005 | blk_unref(blk); |
83d0521a CL |
3006 | qemu_opts_del(opts); |
3007 | qemu_opts_free(create_opts); | |
626f84f3 KW |
3008 | g_free(options); |
3009 | ||
6f176b48 HR |
3010 | if (ret) { |
3011 | return 1; | |
3012 | } | |
3013 | return 0; | |
3014 | } | |
3015 | ||
c227f099 | 3016 | static const img_cmd_t img_cmds[] = { |
153859be SB |
3017 | #define DEF(option, callback, arg_string) \ |
3018 | { option, callback }, | |
3019 | #include "qemu-img-cmds.h" | |
3020 | #undef DEF | |
3021 | #undef GEN_DOCS | |
3022 | { NULL, NULL, }, | |
3023 | }; | |
3024 | ||
ea2384d3 FB |
3025 | int main(int argc, char **argv) |
3026 | { | |
c227f099 | 3027 | const img_cmd_t *cmd; |
153859be | 3028 | const char *cmdname; |
2f78e491 | 3029 | Error *local_error = NULL; |
7db1689c | 3030 | int c; |
7db1689c JC |
3031 | static const struct option long_options[] = { |
3032 | {"help", no_argument, 0, 'h'}, | |
5f6979cb | 3033 | {"version", no_argument, 0, 'v'}, |
7db1689c JC |
3034 | {0, 0, 0, 0} |
3035 | }; | |
ea2384d3 | 3036 | |
526eda14 MK |
3037 | #ifdef CONFIG_POSIX |
3038 | signal(SIGPIPE, SIG_IGN); | |
3039 | #endif | |
3040 | ||
53f76e58 | 3041 | error_set_progname(argv[0]); |
10f5bff6 | 3042 | qemu_init_exec_dir(argv[0]); |
53f76e58 | 3043 | |
2f78e491 | 3044 | if (qemu_init_main_loop(&local_error)) { |
565f65d2 | 3045 | error_report_err(local_error); |
2f78e491 CN |
3046 | exit(EXIT_FAILURE); |
3047 | } | |
3048 | ||
ea2384d3 | 3049 | bdrv_init(); |
ac1307ab FZ |
3050 | if (argc < 2) { |
3051 | error_exit("Not enough arguments"); | |
3052 | } | |
153859be | 3053 | cmdname = argv[1]; |
153859be SB |
3054 | |
3055 | /* find the command */ | |
5f6979cb | 3056 | for (cmd = img_cmds; cmd->name != NULL; cmd++) { |
153859be | 3057 | if (!strcmp(cmdname, cmd->name)) { |
7db1689c | 3058 | return cmd->handler(argc - 1, argv + 1); |
153859be | 3059 | } |
ea2384d3 | 3060 | } |
153859be | 3061 | |
5f6979cb | 3062 | c = getopt_long(argc, argv, "h", long_options, NULL); |
7db1689c JC |
3063 | |
3064 | if (c == 'h') { | |
3065 | help(); | |
3066 | } | |
5f6979cb JC |
3067 | if (c == 'v') { |
3068 | printf(QEMU_IMG_VERSION); | |
3069 | return 0; | |
3070 | } | |
7db1689c | 3071 | |
153859be | 3072 | /* not found */ |
ac1307ab | 3073 | error_exit("Command not found: %s", cmdname); |
ea2384d3 | 3074 | } |