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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" |
737e150e | 32 | #include "block/block_int.h" |
c054b3fd | 33 | #include <getopt.h> |
9230eaf6 | 34 | #include <stdio.h> |
ea2384d3 | 35 | |
e8445331 FB |
36 | #ifdef _WIN32 |
37 | #include <windows.h> | |
38 | #endif | |
39 | ||
c227f099 | 40 | typedef struct img_cmd_t { |
153859be SB |
41 | const char *name; |
42 | int (*handler)(int argc, char **argv); | |
c227f099 | 43 | } img_cmd_t; |
153859be | 44 | |
8599ea4c FS |
45 | enum { |
46 | OPTION_OUTPUT = 256, | |
47 | OPTION_BACKING_CHAIN = 257, | |
48 | }; | |
49 | ||
50 | typedef enum OutputFormat { | |
51 | OFORMAT_JSON, | |
52 | OFORMAT_HUMAN, | |
53 | } OutputFormat; | |
54 | ||
137519ce | 55 | /* Default to cache=writeback as data integrity is not important for qemu-tcg. */ |
adfe078e | 56 | #define BDRV_O_FLAGS BDRV_O_CACHE_WB |
661a0f71 | 57 | #define BDRV_DEFAULT_CACHE "writeback" |
137519ce | 58 | |
ea2384d3 FB |
59 | static void format_print(void *opaque, const char *name) |
60 | { | |
61 | printf(" %s", name); | |
62 | } | |
63 | ||
d2c639d6 | 64 | /* Please keep in synch with qemu-img.texi */ |
3f379ab1 | 65 | static void help(void) |
ea2384d3 | 66 | { |
e00291c0 PB |
67 | const char *help_msg = |
68 | "qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2008 Fabrice Bellard\n" | |
3f020d70 | 69 | "usage: qemu-img command [command options]\n" |
70 | "QEMU disk image utility\n" | |
71 | "\n" | |
72 | "Command syntax:\n" | |
153859be SB |
73 | #define DEF(option, callback, arg_string) \ |
74 | " " arg_string "\n" | |
75 | #include "qemu-img-cmds.h" | |
76 | #undef DEF | |
77 | #undef GEN_DOCS | |
3f020d70 | 78 | "\n" |
79 | "Command parameters:\n" | |
80 | " 'filename' is a disk image filename\n" | |
81 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" | |
661a0f71 | 82 | " 'cache' is the cache mode used to write the output disk image, the valid\n" |
80ccf93b LY |
83 | " options are: 'none', 'writeback' (default, except for convert), 'writethrough',\n" |
84 | " 'directsync' and 'unsafe' (default for convert)\n" | |
3f020d70 | 85 | " 'size' is the disk image size in bytes. Optional suffixes\n" |
86 | " 'k' or 'K' (kilobyte, 1024), 'M' (megabyte, 1024k), 'G' (gigabyte, 1024M)\n" | |
87 | " and T (terabyte, 1024G) are supported. 'b' is ignored.\n" | |
88 | " 'output_filename' is the destination disk image filename\n" | |
89 | " 'output_fmt' is the destination format\n" | |
90 | " 'options' is a comma separated list of format specific options in a\n" | |
91 | " name=value format. Use -o ? for an overview of the options supported by the\n" | |
92 | " used format\n" | |
93 | " '-c' indicates that target image must be compressed (qcow format only)\n" | |
94 | " '-u' enables unsafe rebasing. It is assumed that old and new backing file\n" | |
95 | " match exactly. The image doesn't need a working backing file before\n" | |
96 | " rebasing in this case (useful for renaming the backing file)\n" | |
97 | " '-h' with or without a command shows this help and lists the supported formats\n" | |
6b837bc4 | 98 | " '-p' show progress of command (only certain commands)\n" |
a22f123c KW |
99 | " '-S' indicates the consecutive number of bytes that must contain only zeros\n" |
100 | " for qemu-img to create a sparse image during conversion\n" | |
c054b3fd | 101 | " '--output' takes the format in which the output must be done (human or json)\n" |
3f020d70 | 102 | "\n" |
4534ff54 KW |
103 | "Parameters to check subcommand:\n" |
104 | " '-r' tries to repair any inconsistencies that are found during the check.\n" | |
105 | " '-r leaks' repairs only cluster leaks, whereas '-r all' fixes all\n" | |
106 | " kinds of errors, with a higher risk of choosing the wrong fix or\n" | |
0546b8c2 | 107 | " hiding corruption that has already occurred.\n" |
4534ff54 | 108 | "\n" |
3f020d70 | 109 | "Parameters to snapshot subcommand:\n" |
110 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
111 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
112 | " '-c' creates a snapshot\n" | |
113 | " '-d' deletes a snapshot\n" | |
e00291c0 PB |
114 | " '-l' lists all snapshots in the given image\n"; |
115 | ||
116 | printf("%s\nSupported formats:", help_msg); | |
ea2384d3 FB |
117 | bdrv_iterate_format(format_print, NULL); |
118 | printf("\n"); | |
119 | exit(1); | |
120 | } | |
121 | ||
ea2384d3 FB |
122 | #if defined(WIN32) |
123 | /* XXX: put correct support for win32 */ | |
124 | static int read_password(char *buf, int buf_size) | |
125 | { | |
126 | int c, i; | |
127 | printf("Password: "); | |
128 | fflush(stdout); | |
129 | i = 0; | |
130 | for(;;) { | |
131 | c = getchar(); | |
132 | if (c == '\n') | |
133 | break; | |
134 | if (i < (buf_size - 1)) | |
135 | buf[i++] = c; | |
136 | } | |
137 | buf[i] = '\0'; | |
138 | return 0; | |
139 | } | |
140 | ||
141 | #else | |
142 | ||
143 | #include <termios.h> | |
144 | ||
145 | static struct termios oldtty; | |
146 | ||
147 | static void term_exit(void) | |
148 | { | |
149 | tcsetattr (0, TCSANOW, &oldtty); | |
150 | } | |
151 | ||
152 | static void term_init(void) | |
153 | { | |
154 | struct termios tty; | |
155 | ||
156 | tcgetattr (0, &tty); | |
157 | oldtty = tty; | |
158 | ||
159 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
160 | |INLCR|IGNCR|ICRNL|IXON); | |
161 | tty.c_oflag |= OPOST; | |
162 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
163 | tty.c_cflag &= ~(CSIZE|PARENB); | |
164 | tty.c_cflag |= CS8; | |
165 | tty.c_cc[VMIN] = 1; | |
166 | tty.c_cc[VTIME] = 0; | |
3b46e624 | 167 | |
ea2384d3 FB |
168 | tcsetattr (0, TCSANOW, &tty); |
169 | ||
170 | atexit(term_exit); | |
171 | } | |
172 | ||
3f379ab1 | 173 | static int read_password(char *buf, int buf_size) |
ea2384d3 FB |
174 | { |
175 | uint8_t ch; | |
176 | int i, ret; | |
177 | ||
178 | printf("password: "); | |
179 | fflush(stdout); | |
180 | term_init(); | |
181 | i = 0; | |
182 | for(;;) { | |
183 | ret = read(0, &ch, 1); | |
184 | if (ret == -1) { | |
185 | if (errno == EAGAIN || errno == EINTR) { | |
186 | continue; | |
187 | } else { | |
188 | ret = -1; | |
189 | break; | |
190 | } | |
191 | } else if (ret == 0) { | |
192 | ret = -1; | |
193 | break; | |
194 | } else { | |
195 | if (ch == '\r') { | |
196 | ret = 0; | |
197 | break; | |
198 | } | |
199 | if (i < (buf_size - 1)) | |
200 | buf[i++] = ch; | |
201 | } | |
202 | } | |
203 | term_exit(); | |
204 | buf[i] = '\0'; | |
205 | printf("\n"); | |
206 | return ret; | |
207 | } | |
208 | #endif | |
209 | ||
4ac8aacd JS |
210 | static int print_block_option_help(const char *filename, const char *fmt) |
211 | { | |
212 | BlockDriver *drv, *proto_drv; | |
213 | QEMUOptionParameter *create_options = NULL; | |
214 | ||
215 | /* Find driver and parse its options */ | |
216 | drv = bdrv_find_format(fmt); | |
217 | if (!drv) { | |
15654a6d | 218 | error_report("Unknown file format '%s'", fmt); |
4ac8aacd JS |
219 | return 1; |
220 | } | |
221 | ||
222 | proto_drv = bdrv_find_protocol(filename); | |
223 | if (!proto_drv) { | |
15654a6d | 224 | error_report("Unknown protocol '%s'", filename); |
4ac8aacd JS |
225 | return 1; |
226 | } | |
227 | ||
228 | create_options = append_option_parameters(create_options, | |
229 | drv->create_options); | |
230 | create_options = append_option_parameters(create_options, | |
231 | proto_drv->create_options); | |
232 | print_option_help(create_options); | |
233 | free_option_parameters(create_options); | |
234 | return 0; | |
235 | } | |
236 | ||
75c23805 | 237 | static BlockDriverState *bdrv_new_open(const char *filename, |
9bc378c1 | 238 | const char *fmt, |
f0536bb8 DB |
239 | int flags, |
240 | bool require_io) | |
75c23805 FB |
241 | { |
242 | BlockDriverState *bs; | |
243 | BlockDriver *drv; | |
244 | char password[256]; | |
b9eaf9ec | 245 | int ret; |
75c23805 | 246 | |
b9eaf9ec | 247 | bs = bdrv_new("image"); |
ad717139 | 248 | |
75c23805 FB |
249 | if (fmt) { |
250 | drv = bdrv_find_format(fmt); | |
c2abccec | 251 | if (!drv) { |
15654a6d | 252 | error_report("Unknown file format '%s'", fmt); |
c2abccec MK |
253 | goto fail; |
254 | } | |
75c23805 FB |
255 | } else { |
256 | drv = NULL; | |
257 | } | |
b9eaf9ec KW |
258 | |
259 | ret = bdrv_open(bs, filename, flags, drv); | |
260 | if (ret < 0) { | |
261 | error_report("Could not open '%s': %s", filename, strerror(-ret)); | |
c2abccec | 262 | goto fail; |
75c23805 | 263 | } |
b9eaf9ec | 264 | |
f0536bb8 | 265 | if (bdrv_is_encrypted(bs) && require_io) { |
75c23805 | 266 | printf("Disk image '%s' is encrypted.\n", filename); |
c2abccec | 267 | if (read_password(password, sizeof(password)) < 0) { |
15654a6d | 268 | error_report("No password given"); |
c2abccec MK |
269 | goto fail; |
270 | } | |
271 | if (bdrv_set_key(bs, password) < 0) { | |
15654a6d | 272 | error_report("invalid password"); |
c2abccec MK |
273 | goto fail; |
274 | } | |
75c23805 FB |
275 | } |
276 | return bs; | |
c2abccec MK |
277 | fail: |
278 | if (bs) { | |
279 | bdrv_delete(bs); | |
280 | } | |
281 | return NULL; | |
75c23805 FB |
282 | } |
283 | ||
c2abccec | 284 | static int add_old_style_options(const char *fmt, QEMUOptionParameter *list, |
eec77d9e JS |
285 | const char *base_filename, |
286 | const char *base_fmt) | |
efa84d43 | 287 | { |
efa84d43 KW |
288 | if (base_filename) { |
289 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) { | |
15654a6d JS |
290 | error_report("Backing file not supported for file format '%s'", |
291 | fmt); | |
c2abccec | 292 | return -1; |
efa84d43 KW |
293 | } |
294 | } | |
295 | if (base_fmt) { | |
296 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FMT, base_fmt)) { | |
15654a6d JS |
297 | error_report("Backing file format not supported for file " |
298 | "format '%s'", fmt); | |
c2abccec | 299 | return -1; |
efa84d43 KW |
300 | } |
301 | } | |
c2abccec | 302 | return 0; |
efa84d43 KW |
303 | } |
304 | ||
ea2384d3 FB |
305 | static int img_create(int argc, char **argv) |
306 | { | |
a9300911 | 307 | int c; |
1da7cfbd | 308 | uint64_t img_size = -1; |
ea2384d3 | 309 | const char *fmt = "raw"; |
9230eaf6 | 310 | const char *base_fmt = NULL; |
ea2384d3 FB |
311 | const char *filename; |
312 | const char *base_filename = NULL; | |
9ea2ea71 | 313 | char *options = NULL; |
9b37525a | 314 | Error *local_err = NULL; |
3b46e624 | 315 | |
ea2384d3 | 316 | for(;;) { |
9ea2ea71 | 317 | c = getopt(argc, argv, "F:b:f:he6o:"); |
b8fb60da | 318 | if (c == -1) { |
ea2384d3 | 319 | break; |
b8fb60da | 320 | } |
ea2384d3 | 321 | switch(c) { |
ef87394c | 322 | case '?': |
ea2384d3 FB |
323 | case 'h': |
324 | help(); | |
325 | break; | |
9230eaf6 AL |
326 | case 'F': |
327 | base_fmt = optarg; | |
328 | break; | |
ea2384d3 FB |
329 | case 'b': |
330 | base_filename = optarg; | |
331 | break; | |
332 | case 'f': | |
333 | fmt = optarg; | |
334 | break; | |
335 | case 'e': | |
9d42e15d | 336 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e JS |
337 | "encryption\' instead!"); |
338 | return 1; | |
d8871c5a | 339 | case '6': |
9d42e15d | 340 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e JS |
341 | "compat6\' instead!"); |
342 | return 1; | |
9ea2ea71 KW |
343 | case 'o': |
344 | options = optarg; | |
345 | break; | |
ea2384d3 FB |
346 | } |
347 | } | |
9230eaf6 | 348 | |
b50cbabc | 349 | /* Get the filename */ |
b8fb60da | 350 | if (optind >= argc) { |
b50cbabc | 351 | help(); |
b8fb60da | 352 | } |
b50cbabc MK |
353 | filename = argv[optind++]; |
354 | ||
1da7cfbd JS |
355 | /* Get image size, if specified */ |
356 | if (optind < argc) { | |
70b4f4bb | 357 | int64_t sval; |
e36b3695 MA |
358 | char *end; |
359 | sval = strtosz_suffix(argv[optind++], &end, STRTOSZ_DEFSUFFIX_B); | |
360 | if (sval < 0 || *end) { | |
79443397 | 361 | if (sval == -ERANGE) { |
362 | error_report("Image size must be less than 8 EiB!"); | |
363 | } else { | |
364 | error_report("Invalid image size specified! You may use k, M, " | |
365 | "G or T suffixes for "); | |
366 | error_report("kilobytes, megabytes, gigabytes and terabytes."); | |
367 | } | |
a9300911 | 368 | return 1; |
1da7cfbd JS |
369 | } |
370 | img_size = (uint64_t)sval; | |
371 | } | |
372 | ||
c8057f95 | 373 | if (options && is_help_option(options)) { |
a9300911 | 374 | return print_block_option_help(filename, fmt); |
4ac8aacd JS |
375 | } |
376 | ||
9b37525a LC |
377 | bdrv_img_create(filename, fmt, base_filename, base_fmt, |
378 | options, img_size, BDRV_O_FLAGS, &local_err); | |
379 | if (error_is_set(&local_err)) { | |
380 | error_report("%s", error_get_pretty(local_err)); | |
381 | error_free(local_err); | |
c2abccec MK |
382 | return 1; |
383 | } | |
a9300911 | 384 | |
ea2384d3 FB |
385 | return 0; |
386 | } | |
387 | ||
8599ea4c FS |
388 | static void dump_json_image_check(ImageCheck *check) |
389 | { | |
390 | Error *errp = NULL; | |
391 | QString *str; | |
392 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
393 | QObject *obj; | |
394 | visit_type_ImageCheck(qmp_output_get_visitor(ov), | |
395 | &check, NULL, &errp); | |
396 | obj = qmp_output_get_qobject(ov); | |
397 | str = qobject_to_json_pretty(obj); | |
398 | assert(str != NULL); | |
399 | printf("%s\n", qstring_get_str(str)); | |
400 | qobject_decref(obj); | |
401 | qmp_output_visitor_cleanup(ov); | |
402 | QDECREF(str); | |
403 | } | |
404 | ||
405 | static void dump_human_image_check(ImageCheck *check) | |
406 | { | |
407 | if (!(check->corruptions || check->leaks || check->check_errors)) { | |
408 | printf("No errors were found on the image.\n"); | |
409 | } else { | |
410 | if (check->corruptions) { | |
411 | printf("\n%" PRId64 " errors were found on the image.\n" | |
412 | "Data may be corrupted, or further writes to the image " | |
413 | "may corrupt it.\n", | |
414 | check->corruptions); | |
415 | } | |
416 | ||
417 | if (check->leaks) { | |
418 | printf("\n%" PRId64 " leaked clusters were found on the image.\n" | |
419 | "This means waste of disk space, but no harm to data.\n", | |
420 | check->leaks); | |
421 | } | |
422 | ||
423 | if (check->check_errors) { | |
424 | printf("\n%" PRId64 " internal errors have occurred during the check.\n", | |
425 | check->check_errors); | |
426 | } | |
427 | } | |
428 | ||
429 | if (check->total_clusters != 0 && check->allocated_clusters != 0) { | |
c9fc5083 SH |
430 | printf("%" PRId64 "/%" PRId64 " = %0.2f%% allocated, " |
431 | "%0.2f%% fragmented\n", | |
432 | check->allocated_clusters, check->total_clusters, | |
433 | check->allocated_clusters * 100.0 / check->total_clusters, | |
434 | check->fragmented_clusters * 100.0 / check->allocated_clusters); | |
8599ea4c FS |
435 | } |
436 | ||
437 | if (check->image_end_offset) { | |
438 | printf("Image end offset: %" PRId64 "\n", check->image_end_offset); | |
439 | } | |
440 | } | |
441 | ||
442 | static int collect_image_check(BlockDriverState *bs, | |
443 | ImageCheck *check, | |
444 | const char *filename, | |
445 | const char *fmt, | |
446 | int fix) | |
447 | { | |
448 | int ret; | |
449 | BdrvCheckResult result; | |
450 | ||
451 | ret = bdrv_check(bs, &result, fix); | |
452 | if (ret < 0) { | |
453 | return ret; | |
454 | } | |
455 | ||
456 | check->filename = g_strdup(filename); | |
457 | check->format = g_strdup(bdrv_get_format_name(bs)); | |
458 | check->check_errors = result.check_errors; | |
459 | check->corruptions = result.corruptions; | |
460 | check->has_corruptions = result.corruptions != 0; | |
461 | check->leaks = result.leaks; | |
462 | check->has_leaks = result.leaks != 0; | |
463 | check->corruptions_fixed = result.corruptions_fixed; | |
464 | check->has_corruptions_fixed = result.corruptions != 0; | |
465 | check->leaks_fixed = result.leaks_fixed; | |
466 | check->has_leaks_fixed = result.leaks != 0; | |
467 | check->image_end_offset = result.image_end_offset; | |
468 | check->has_image_end_offset = result.image_end_offset != 0; | |
469 | check->total_clusters = result.bfi.total_clusters; | |
470 | check->has_total_clusters = result.bfi.total_clusters != 0; | |
471 | check->allocated_clusters = result.bfi.allocated_clusters; | |
472 | check->has_allocated_clusters = result.bfi.allocated_clusters != 0; | |
473 | check->fragmented_clusters = result.bfi.fragmented_clusters; | |
474 | check->has_fragmented_clusters = result.bfi.fragmented_clusters != 0; | |
475 | ||
476 | return 0; | |
477 | } | |
478 | ||
e076f338 KW |
479 | /* |
480 | * Checks an image for consistency. Exit codes: | |
481 | * | |
482 | * 0 - Check completed, image is good | |
483 | * 1 - Check not completed because of internal errors | |
484 | * 2 - Check completed, image is corrupted | |
485 | * 3 - Check completed, image has leaked clusters, but is good otherwise | |
486 | */ | |
1585969c AL |
487 | static int img_check(int argc, char **argv) |
488 | { | |
489 | int c, ret; | |
8599ea4c FS |
490 | OutputFormat output_format = OFORMAT_HUMAN; |
491 | const char *filename, *fmt, *output; | |
1585969c | 492 | BlockDriverState *bs; |
4534ff54 | 493 | int fix = 0; |
058f8f16 | 494 | int flags = BDRV_O_FLAGS | BDRV_O_CHECK; |
8599ea4c | 495 | ImageCheck *check; |
1585969c AL |
496 | |
497 | fmt = NULL; | |
8599ea4c | 498 | output = NULL; |
1585969c | 499 | for(;;) { |
8599ea4c FS |
500 | int option_index = 0; |
501 | static const struct option long_options[] = { | |
502 | {"help", no_argument, 0, 'h'}, | |
503 | {"format", required_argument, 0, 'f'}, | |
504 | {"repair", no_argument, 0, 'r'}, | |
505 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
506 | {0, 0, 0, 0} | |
507 | }; | |
508 | c = getopt_long(argc, argv, "f:hr:", | |
509 | long_options, &option_index); | |
b8fb60da | 510 | if (c == -1) { |
1585969c | 511 | break; |
b8fb60da | 512 | } |
1585969c | 513 | switch(c) { |
ef87394c | 514 | case '?': |
1585969c AL |
515 | case 'h': |
516 | help(); | |
517 | break; | |
518 | case 'f': | |
519 | fmt = optarg; | |
520 | break; | |
4534ff54 KW |
521 | case 'r': |
522 | flags |= BDRV_O_RDWR; | |
523 | ||
524 | if (!strcmp(optarg, "leaks")) { | |
525 | fix = BDRV_FIX_LEAKS; | |
526 | } else if (!strcmp(optarg, "all")) { | |
527 | fix = BDRV_FIX_LEAKS | BDRV_FIX_ERRORS; | |
528 | } else { | |
529 | help(); | |
530 | } | |
531 | break; | |
8599ea4c FS |
532 | case OPTION_OUTPUT: |
533 | output = optarg; | |
534 | break; | |
1585969c AL |
535 | } |
536 | } | |
b8fb60da | 537 | if (optind >= argc) { |
1585969c | 538 | help(); |
b8fb60da | 539 | } |
1585969c AL |
540 | filename = argv[optind++]; |
541 | ||
8599ea4c FS |
542 | if (output && !strcmp(output, "json")) { |
543 | output_format = OFORMAT_JSON; | |
544 | } else if (output && !strcmp(output, "human")) { | |
545 | output_format = OFORMAT_HUMAN; | |
546 | } else if (output) { | |
547 | error_report("--output must be used with human or json as argument."); | |
548 | return 1; | |
549 | } | |
550 | ||
f0536bb8 | 551 | bs = bdrv_new_open(filename, fmt, flags, true); |
c2abccec MK |
552 | if (!bs) { |
553 | return 1; | |
554 | } | |
8599ea4c FS |
555 | |
556 | check = g_new0(ImageCheck, 1); | |
557 | ret = collect_image_check(bs, check, filename, fmt, fix); | |
e076f338 KW |
558 | |
559 | if (ret == -ENOTSUP) { | |
8599ea4c FS |
560 | if (output_format == OFORMAT_HUMAN) { |
561 | error_report("This image format does not support checks"); | |
562 | } | |
563 | ret = 1; | |
564 | goto fail; | |
e076f338 KW |
565 | } |
566 | ||
8599ea4c FS |
567 | if (check->corruptions_fixed || check->leaks_fixed) { |
568 | int corruptions_fixed, leaks_fixed; | |
ccf34716 | 569 | |
8599ea4c FS |
570 | leaks_fixed = check->leaks_fixed; |
571 | corruptions_fixed = check->corruptions_fixed; | |
e076f338 | 572 | |
8599ea4c FS |
573 | if (output_format == OFORMAT_HUMAN) { |
574 | printf("The following inconsistencies were found and repaired:\n\n" | |
575 | " %" PRId64 " leaked clusters\n" | |
576 | " %" PRId64 " corruptions\n\n" | |
577 | "Double checking the fixed image now...\n", | |
578 | check->leaks_fixed, | |
579 | check->corruptions_fixed); | |
e076f338 KW |
580 | } |
581 | ||
8599ea4c | 582 | ret = collect_image_check(bs, check, filename, fmt, 0); |
1585969c | 583 | |
8599ea4c FS |
584 | check->leaks_fixed = leaks_fixed; |
585 | check->corruptions_fixed = corruptions_fixed; | |
f8111c24 DXW |
586 | } |
587 | ||
8599ea4c FS |
588 | switch (output_format) { |
589 | case OFORMAT_HUMAN: | |
590 | dump_human_image_check(check); | |
591 | break; | |
592 | case OFORMAT_JSON: | |
593 | dump_json_image_check(check); | |
594 | break; | |
c6bb9ad1 FS |
595 | } |
596 | ||
8599ea4c FS |
597 | if (ret || check->check_errors) { |
598 | ret = 1; | |
599 | goto fail; | |
c2abccec | 600 | } |
e076f338 | 601 | |
8599ea4c FS |
602 | if (check->corruptions) { |
603 | ret = 2; | |
604 | } else if (check->leaks) { | |
605 | ret = 3; | |
e076f338 | 606 | } else { |
8599ea4c | 607 | ret = 0; |
e076f338 | 608 | } |
8599ea4c FS |
609 | |
610 | fail: | |
611 | qapi_free_ImageCheck(check); | |
612 | bdrv_delete(bs); | |
613 | ||
614 | return ret; | |
1585969c AL |
615 | } |
616 | ||
ea2384d3 FB |
617 | static int img_commit(int argc, char **argv) |
618 | { | |
661a0f71 FS |
619 | int c, ret, flags; |
620 | const char *filename, *fmt, *cache; | |
ea2384d3 FB |
621 | BlockDriverState *bs; |
622 | ||
623 | fmt = NULL; | |
661a0f71 | 624 | cache = BDRV_DEFAULT_CACHE; |
ea2384d3 | 625 | for(;;) { |
661a0f71 | 626 | c = getopt(argc, argv, "f:ht:"); |
b8fb60da | 627 | if (c == -1) { |
ea2384d3 | 628 | break; |
b8fb60da | 629 | } |
ea2384d3 | 630 | switch(c) { |
ef87394c | 631 | case '?': |
ea2384d3 FB |
632 | case 'h': |
633 | help(); | |
634 | break; | |
635 | case 'f': | |
636 | fmt = optarg; | |
637 | break; | |
661a0f71 FS |
638 | case 't': |
639 | cache = optarg; | |
640 | break; | |
ea2384d3 FB |
641 | } |
642 | } | |
b8fb60da | 643 | if (optind >= argc) { |
ea2384d3 | 644 | help(); |
b8fb60da | 645 | } |
ea2384d3 FB |
646 | filename = argv[optind++]; |
647 | ||
661a0f71 | 648 | flags = BDRV_O_RDWR; |
c3993cdc | 649 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
650 | if (ret < 0) { |
651 | error_report("Invalid cache option: %s", cache); | |
652 | return -1; | |
653 | } | |
654 | ||
f0536bb8 | 655 | bs = bdrv_new_open(filename, fmt, flags, true); |
c2abccec MK |
656 | if (!bs) { |
657 | return 1; | |
658 | } | |
ea2384d3 FB |
659 | ret = bdrv_commit(bs); |
660 | switch(ret) { | |
661 | case 0: | |
662 | printf("Image committed.\n"); | |
663 | break; | |
664 | case -ENOENT: | |
15654a6d | 665 | error_report("No disk inserted"); |
ea2384d3 FB |
666 | break; |
667 | case -EACCES: | |
15654a6d | 668 | error_report("Image is read-only"); |
ea2384d3 FB |
669 | break; |
670 | case -ENOTSUP: | |
15654a6d | 671 | error_report("Image is already committed"); |
ea2384d3 FB |
672 | break; |
673 | default: | |
15654a6d | 674 | error_report("Error while committing image"); |
ea2384d3 FB |
675 | break; |
676 | } | |
677 | ||
678 | bdrv_delete(bs); | |
c2abccec MK |
679 | if (ret) { |
680 | return 1; | |
681 | } | |
ea2384d3 FB |
682 | return 0; |
683 | } | |
684 | ||
f58c7b35 TS |
685 | /* |
686 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
687 | * a non-NUL byte. | |
688 | * | |
689 | * 'pnum' is set to the number of sectors (including and immediately following | |
690 | * the first one) that are known to be in the same allocated/unallocated state. | |
691 | */ | |
ea2384d3 FB |
692 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
693 | { | |
1a6d39fd SH |
694 | bool is_zero; |
695 | int i; | |
ea2384d3 FB |
696 | |
697 | if (n <= 0) { | |
698 | *pnum = 0; | |
699 | return 0; | |
700 | } | |
1a6d39fd | 701 | is_zero = buffer_is_zero(buf, 512); |
ea2384d3 FB |
702 | for(i = 1; i < n; i++) { |
703 | buf += 512; | |
1a6d39fd | 704 | if (is_zero != buffer_is_zero(buf, 512)) { |
ea2384d3 | 705 | break; |
1a6d39fd | 706 | } |
ea2384d3 FB |
707 | } |
708 | *pnum = i; | |
1a6d39fd | 709 | return !is_zero; |
ea2384d3 FB |
710 | } |
711 | ||
a22f123c KW |
712 | /* |
713 | * Like is_allocated_sectors, but if the buffer starts with a used sector, | |
714 | * up to 'min' consecutive sectors containing zeros are ignored. This avoids | |
715 | * breaking up write requests for only small sparse areas. | |
716 | */ | |
717 | static int is_allocated_sectors_min(const uint8_t *buf, int n, int *pnum, | |
718 | int min) | |
719 | { | |
720 | int ret; | |
721 | int num_checked, num_used; | |
722 | ||
723 | if (n < min) { | |
724 | min = n; | |
725 | } | |
726 | ||
727 | ret = is_allocated_sectors(buf, n, pnum); | |
728 | if (!ret) { | |
729 | return ret; | |
730 | } | |
731 | ||
732 | num_used = *pnum; | |
733 | buf += BDRV_SECTOR_SIZE * *pnum; | |
734 | n -= *pnum; | |
735 | num_checked = num_used; | |
736 | ||
737 | while (n > 0) { | |
738 | ret = is_allocated_sectors(buf, n, pnum); | |
739 | ||
740 | buf += BDRV_SECTOR_SIZE * *pnum; | |
741 | n -= *pnum; | |
742 | num_checked += *pnum; | |
743 | if (ret) { | |
744 | num_used = num_checked; | |
745 | } else if (*pnum >= min) { | |
746 | break; | |
747 | } | |
748 | } | |
749 | ||
750 | *pnum = num_used; | |
751 | return 1; | |
752 | } | |
753 | ||
3e85c6fd KW |
754 | /* |
755 | * Compares two buffers sector by sector. Returns 0 if the first sector of both | |
756 | * buffers matches, non-zero otherwise. | |
757 | * | |
758 | * pnum is set to the number of sectors (including and immediately following | |
759 | * the first one) that are known to have the same comparison result | |
760 | */ | |
761 | static int compare_sectors(const uint8_t *buf1, const uint8_t *buf2, int n, | |
762 | int *pnum) | |
763 | { | |
764 | int res, i; | |
765 | ||
766 | if (n <= 0) { | |
767 | *pnum = 0; | |
768 | return 0; | |
769 | } | |
770 | ||
771 | res = !!memcmp(buf1, buf2, 512); | |
772 | for(i = 1; i < n; i++) { | |
773 | buf1 += 512; | |
774 | buf2 += 512; | |
775 | ||
776 | if (!!memcmp(buf1, buf2, 512) != res) { | |
777 | break; | |
778 | } | |
779 | } | |
780 | ||
781 | *pnum = i; | |
782 | return res; | |
783 | } | |
784 | ||
80ee15a6 | 785 | #define IO_BUF_SIZE (2 * 1024 * 1024) |
ea2384d3 FB |
786 | |
787 | static int img_convert(int argc, char **argv) | |
788 | { | |
eec77d9e | 789 | int c, ret = 0, n, n1, bs_n, bs_i, compress, cluster_size, cluster_sectors; |
661a0f71 FS |
790 | int progress = 0, flags; |
791 | const char *fmt, *out_fmt, *cache, *out_baseimg, *out_filename; | |
b50cbabc | 792 | BlockDriver *drv, *proto_drv; |
c2abccec | 793 | BlockDriverState **bs = NULL, *out_bs = NULL; |
96b8f136 TS |
794 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
795 | uint64_t bs_sectors; | |
c2abccec | 796 | uint8_t * buf = NULL; |
ea2384d3 | 797 | const uint8_t *buf1; |
faea38e7 | 798 | BlockDriverInfo bdi; |
b50cbabc | 799 | QEMUOptionParameter *param = NULL, *create_options = NULL; |
a18953fb | 800 | QEMUOptionParameter *out_baseimg_param; |
efa84d43 | 801 | char *options = NULL; |
51ef6727 | 802 | const char *snapshot_name = NULL; |
1f710495 | 803 | float local_progress = 0; |
a22f123c | 804 | int min_sparse = 8; /* Need at least 4k of zeros for sparse detection */ |
ea2384d3 FB |
805 | |
806 | fmt = NULL; | |
807 | out_fmt = "raw"; | |
661a0f71 | 808 | cache = "unsafe"; |
f58c7b35 | 809 | out_baseimg = NULL; |
eec77d9e | 810 | compress = 0; |
ea2384d3 | 811 | for(;;) { |
a22f123c | 812 | c = getopt(argc, argv, "f:O:B:s:hce6o:pS:t:"); |
b8fb60da | 813 | if (c == -1) { |
ea2384d3 | 814 | break; |
b8fb60da | 815 | } |
ea2384d3 | 816 | switch(c) { |
ef87394c | 817 | case '?': |
ea2384d3 FB |
818 | case 'h': |
819 | help(); | |
820 | break; | |
821 | case 'f': | |
822 | fmt = optarg; | |
823 | break; | |
824 | case 'O': | |
825 | out_fmt = optarg; | |
826 | break; | |
f58c7b35 TS |
827 | case 'B': |
828 | out_baseimg = optarg; | |
829 | break; | |
ea2384d3 | 830 | case 'c': |
eec77d9e | 831 | compress = 1; |
ea2384d3 FB |
832 | break; |
833 | case 'e': | |
9d42e15d | 834 | error_report("option -e is deprecated, please use \'-o " |
eec77d9e JS |
835 | "encryption\' instead!"); |
836 | return 1; | |
ec36ba14 | 837 | case '6': |
9d42e15d | 838 | error_report("option -6 is deprecated, please use \'-o " |
eec77d9e JS |
839 | "compat6\' instead!"); |
840 | return 1; | |
efa84d43 KW |
841 | case 'o': |
842 | options = optarg; | |
843 | break; | |
51ef6727 | 844 | case 's': |
845 | snapshot_name = optarg; | |
846 | break; | |
a22f123c KW |
847 | case 'S': |
848 | { | |
849 | int64_t sval; | |
e36b3695 MA |
850 | char *end; |
851 | sval = strtosz_suffix(optarg, &end, STRTOSZ_DEFSUFFIX_B); | |
852 | if (sval < 0 || *end) { | |
a22f123c KW |
853 | error_report("Invalid minimum zero buffer size for sparse output specified"); |
854 | return 1; | |
855 | } | |
856 | ||
857 | min_sparse = sval / BDRV_SECTOR_SIZE; | |
858 | break; | |
859 | } | |
6b837bc4 JS |
860 | case 'p': |
861 | progress = 1; | |
862 | break; | |
661a0f71 FS |
863 | case 't': |
864 | cache = optarg; | |
865 | break; | |
ea2384d3 FB |
866 | } |
867 | } | |
3b46e624 | 868 | |
926c2d23 | 869 | bs_n = argc - optind - 1; |
b8fb60da JS |
870 | if (bs_n < 1) { |
871 | help(); | |
872 | } | |
926c2d23 AZ |
873 | |
874 | out_filename = argv[argc - 1]; | |
f58c7b35 | 875 | |
fa170c14 CA |
876 | /* Initialize before goto out */ |
877 | qemu_progress_init(progress, 2.0); | |
878 | ||
c8057f95 | 879 | if (options && is_help_option(options)) { |
4ac8aacd JS |
880 | ret = print_block_option_help(out_filename, out_fmt); |
881 | goto out; | |
882 | } | |
883 | ||
c2abccec | 884 | if (bs_n > 1 && out_baseimg) { |
15654a6d JS |
885 | error_report("-B makes no sense when concatenating multiple input " |
886 | "images"); | |
31ca34b8 JS |
887 | ret = -1; |
888 | goto out; | |
c2abccec | 889 | } |
f8111c24 | 890 | |
6b837bc4 JS |
891 | qemu_progress_print(0, 100); |
892 | ||
7267c094 | 893 | bs = g_malloc0(bs_n * sizeof(BlockDriverState *)); |
926c2d23 AZ |
894 | |
895 | total_sectors = 0; | |
896 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
f0536bb8 | 897 | bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt, BDRV_O_FLAGS, true); |
c2abccec | 898 | if (!bs[bs_i]) { |
15654a6d | 899 | error_report("Could not open '%s'", argv[optind + bs_i]); |
c2abccec MK |
900 | ret = -1; |
901 | goto out; | |
902 | } | |
926c2d23 AZ |
903 | bdrv_get_geometry(bs[bs_i], &bs_sectors); |
904 | total_sectors += bs_sectors; | |
905 | } | |
ea2384d3 | 906 | |
51ef6727 | 907 | if (snapshot_name != NULL) { |
908 | if (bs_n > 1) { | |
6daf194d | 909 | error_report("No support for concatenating multiple snapshot"); |
51ef6727 | 910 | ret = -1; |
911 | goto out; | |
912 | } | |
913 | if (bdrv_snapshot_load_tmp(bs[0], snapshot_name) < 0) { | |
6daf194d | 914 | error_report("Failed to load snapshot"); |
51ef6727 | 915 | ret = -1; |
916 | goto out; | |
917 | } | |
918 | } | |
919 | ||
efa84d43 | 920 | /* Find driver and parse its options */ |
ea2384d3 | 921 | drv = bdrv_find_format(out_fmt); |
c2abccec | 922 | if (!drv) { |
15654a6d | 923 | error_report("Unknown file format '%s'", out_fmt); |
c2abccec MK |
924 | ret = -1; |
925 | goto out; | |
926 | } | |
efa84d43 | 927 | |
b50cbabc | 928 | proto_drv = bdrv_find_protocol(out_filename); |
c2abccec | 929 | if (!proto_drv) { |
15654a6d | 930 | error_report("Unknown protocol '%s'", out_filename); |
c2abccec MK |
931 | ret = -1; |
932 | goto out; | |
933 | } | |
b50cbabc MK |
934 | |
935 | create_options = append_option_parameters(create_options, | |
936 | drv->create_options); | |
937 | create_options = append_option_parameters(create_options, | |
938 | proto_drv->create_options); | |
db08adf5 | 939 | |
efa84d43 | 940 | if (options) { |
b50cbabc | 941 | param = parse_option_parameters(options, create_options, param); |
efa84d43 | 942 | if (param == NULL) { |
15654a6d | 943 | error_report("Invalid options for file format '%s'.", out_fmt); |
c2abccec MK |
944 | ret = -1; |
945 | goto out; | |
efa84d43 KW |
946 | } |
947 | } else { | |
b50cbabc | 948 | param = parse_option_parameters("", create_options, param); |
efa84d43 KW |
949 | } |
950 | ||
951 | set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512); | |
eec77d9e | 952 | ret = add_old_style_options(out_fmt, param, out_baseimg, NULL); |
c2abccec MK |
953 | if (ret < 0) { |
954 | goto out; | |
955 | } | |
efa84d43 | 956 | |
a18953fb KW |
957 | /* Get backing file name if -o backing_file was used */ |
958 | out_baseimg_param = get_option_parameter(param, BLOCK_OPT_BACKING_FILE); | |
959 | if (out_baseimg_param) { | |
960 | out_baseimg = out_baseimg_param->value.s; | |
961 | } | |
962 | ||
efa84d43 | 963 | /* Check if compression is supported */ |
eec77d9e | 964 | if (compress) { |
efa84d43 KW |
965 | QEMUOptionParameter *encryption = |
966 | get_option_parameter(param, BLOCK_OPT_ENCRYPT); | |
41521fa4 KW |
967 | QEMUOptionParameter *preallocation = |
968 | get_option_parameter(param, BLOCK_OPT_PREALLOC); | |
efa84d43 KW |
969 | |
970 | if (!drv->bdrv_write_compressed) { | |
15654a6d | 971 | error_report("Compression not supported for this file format"); |
c2abccec MK |
972 | ret = -1; |
973 | goto out; | |
efa84d43 KW |
974 | } |
975 | ||
976 | if (encryption && encryption->value.n) { | |
15654a6d JS |
977 | error_report("Compression and encryption not supported at " |
978 | "the same time"); | |
c2abccec MK |
979 | ret = -1; |
980 | goto out; | |
efa84d43 | 981 | } |
41521fa4 KW |
982 | |
983 | if (preallocation && preallocation->value.s | |
984 | && strcmp(preallocation->value.s, "off")) | |
985 | { | |
986 | error_report("Compression and preallocation not supported at " | |
987 | "the same time"); | |
988 | ret = -1; | |
989 | goto out; | |
990 | } | |
efa84d43 KW |
991 | } |
992 | ||
993 | /* Create the new image */ | |
994 | ret = bdrv_create(drv, out_filename, param); | |
ea2384d3 FB |
995 | if (ret < 0) { |
996 | if (ret == -ENOTSUP) { | |
15654a6d JS |
997 | error_report("Formatting not supported for file format '%s'", |
998 | out_fmt); | |
6e9ea0c0 | 999 | } else if (ret == -EFBIG) { |
15654a6d JS |
1000 | error_report("The image size is too large for file format '%s'", |
1001 | out_fmt); | |
ea2384d3 | 1002 | } else { |
15654a6d JS |
1003 | error_report("%s: error while converting %s: %s", |
1004 | out_filename, out_fmt, strerror(-ret)); | |
ea2384d3 | 1005 | } |
c2abccec | 1006 | goto out; |
ea2384d3 | 1007 | } |
3b46e624 | 1008 | |
661a0f71 | 1009 | flags = BDRV_O_RDWR; |
c3993cdc | 1010 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1011 | if (ret < 0) { |
1012 | error_report("Invalid cache option: %s", cache); | |
1013 | return -1; | |
1014 | } | |
1015 | ||
f0536bb8 | 1016 | out_bs = bdrv_new_open(out_filename, out_fmt, flags, true); |
c2abccec MK |
1017 | if (!out_bs) { |
1018 | ret = -1; | |
1019 | goto out; | |
1020 | } | |
ea2384d3 | 1021 | |
926c2d23 AZ |
1022 | bs_i = 0; |
1023 | bs_offset = 0; | |
1024 | bdrv_get_geometry(bs[0], &bs_sectors); | |
bb1c0597 | 1025 | buf = qemu_blockalign(out_bs, IO_BUF_SIZE); |
926c2d23 | 1026 | |
eec77d9e | 1027 | if (compress) { |
c2abccec MK |
1028 | ret = bdrv_get_info(out_bs, &bdi); |
1029 | if (ret < 0) { | |
15654a6d | 1030 | error_report("could not get block driver info"); |
c2abccec MK |
1031 | goto out; |
1032 | } | |
faea38e7 | 1033 | cluster_size = bdi.cluster_size; |
c2abccec | 1034 | if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE) { |
15654a6d | 1035 | error_report("invalid cluster size"); |
c2abccec MK |
1036 | ret = -1; |
1037 | goto out; | |
1038 | } | |
ea2384d3 FB |
1039 | cluster_sectors = cluster_size >> 9; |
1040 | sector_num = 0; | |
6b837bc4 JS |
1041 | |
1042 | nb_sectors = total_sectors; | |
1f710495 KW |
1043 | if (nb_sectors != 0) { |
1044 | local_progress = (float)100 / | |
1045 | (nb_sectors / MIN(nb_sectors, cluster_sectors)); | |
1046 | } | |
6b837bc4 | 1047 | |
ea2384d3 | 1048 | for(;;) { |
926c2d23 AZ |
1049 | int64_t bs_num; |
1050 | int remainder; | |
1051 | uint8_t *buf2; | |
1052 | ||
ea2384d3 FB |
1053 | nb_sectors = total_sectors - sector_num; |
1054 | if (nb_sectors <= 0) | |
1055 | break; | |
1056 | if (nb_sectors >= cluster_sectors) | |
1057 | n = cluster_sectors; | |
1058 | else | |
1059 | n = nb_sectors; | |
926c2d23 AZ |
1060 | |
1061 | bs_num = sector_num - bs_offset; | |
1062 | assert (bs_num >= 0); | |
1063 | remainder = n; | |
1064 | buf2 = buf; | |
1065 | while (remainder > 0) { | |
1066 | int nlow; | |
1067 | while (bs_num == bs_sectors) { | |
1068 | bs_i++; | |
1069 | assert (bs_i < bs_n); | |
1070 | bs_offset += bs_sectors; | |
1071 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
1072 | bs_num = 0; | |
0bfcd599 BS |
1073 | /* printf("changing part: sector_num=%" PRId64 ", " |
1074 | "bs_i=%d, bs_offset=%" PRId64 ", bs_sectors=%" PRId64 | |
1075 | "\n", sector_num, bs_i, bs_offset, bs_sectors); */ | |
926c2d23 AZ |
1076 | } |
1077 | assert (bs_num < bs_sectors); | |
1078 | ||
1079 | nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; | |
1080 | ||
c2abccec MK |
1081 | ret = bdrv_read(bs[bs_i], bs_num, buf2, nlow); |
1082 | if (ret < 0) { | |
3fba9d81 SH |
1083 | error_report("error while reading sector %" PRId64 ": %s", |
1084 | bs_num, strerror(-ret)); | |
c2abccec MK |
1085 | goto out; |
1086 | } | |
926c2d23 AZ |
1087 | |
1088 | buf2 += nlow * 512; | |
1089 | bs_num += nlow; | |
1090 | ||
1091 | remainder -= nlow; | |
1092 | } | |
1093 | assert (remainder == 0); | |
1094 | ||
b8fb60da | 1095 | if (n < cluster_sectors) { |
ea2384d3 | 1096 | memset(buf + n * 512, 0, cluster_size - n * 512); |
b8fb60da | 1097 | } |
1a6d39fd | 1098 | if (!buffer_is_zero(buf, cluster_size)) { |
c2abccec MK |
1099 | ret = bdrv_write_compressed(out_bs, sector_num, buf, |
1100 | cluster_sectors); | |
1101 | if (ret != 0) { | |
3fba9d81 SH |
1102 | error_report("error while compressing sector %" PRId64 |
1103 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1104 | goto out; |
1105 | } | |
ea2384d3 FB |
1106 | } |
1107 | sector_num += n; | |
6b837bc4 | 1108 | qemu_progress_print(local_progress, 100); |
ea2384d3 | 1109 | } |
faea38e7 FB |
1110 | /* signal EOF to align */ |
1111 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 1112 | } else { |
f2feebbd KW |
1113 | int has_zero_init = bdrv_has_zero_init(out_bs); |
1114 | ||
f58c7b35 | 1115 | sector_num = 0; // total number of sectors converted so far |
6b837bc4 | 1116 | nb_sectors = total_sectors - sector_num; |
1f710495 KW |
1117 | if (nb_sectors != 0) { |
1118 | local_progress = (float)100 / | |
1119 | (nb_sectors / MIN(nb_sectors, IO_BUF_SIZE / 512)); | |
1120 | } | |
6b837bc4 | 1121 | |
ea2384d3 FB |
1122 | for(;;) { |
1123 | nb_sectors = total_sectors - sector_num; | |
b8fb60da | 1124 | if (nb_sectors <= 0) { |
ea2384d3 | 1125 | break; |
b8fb60da JS |
1126 | } |
1127 | if (nb_sectors >= (IO_BUF_SIZE / 512)) { | |
ea2384d3 | 1128 | n = (IO_BUF_SIZE / 512); |
b8fb60da | 1129 | } else { |
ea2384d3 | 1130 | n = nb_sectors; |
b8fb60da | 1131 | } |
926c2d23 AZ |
1132 | |
1133 | while (sector_num - bs_offset >= bs_sectors) { | |
1134 | bs_i ++; | |
1135 | assert (bs_i < bs_n); | |
1136 | bs_offset += bs_sectors; | |
1137 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
0bfcd599 BS |
1138 | /* printf("changing part: sector_num=%" PRId64 ", bs_i=%d, " |
1139 | "bs_offset=%" PRId64 ", bs_sectors=%" PRId64 "\n", | |
926c2d23 AZ |
1140 | sector_num, bs_i, bs_offset, bs_sectors); */ |
1141 | } | |
1142 | ||
b8fb60da | 1143 | if (n > bs_offset + bs_sectors - sector_num) { |
926c2d23 | 1144 | n = bs_offset + bs_sectors - sector_num; |
b8fb60da | 1145 | } |
926c2d23 | 1146 | |
f2feebbd | 1147 | if (has_zero_init) { |
d032044f AS |
1148 | /* If the output image is being created as a copy on write image, |
1149 | assume that sectors which are unallocated in the input image | |
1150 | are present in both the output's and input's base images (no | |
1151 | need to copy them). */ | |
1152 | if (out_baseimg) { | |
1153 | if (!bdrv_is_allocated(bs[bs_i], sector_num - bs_offset, | |
1154 | n, &n1)) { | |
1155 | sector_num += n1; | |
1156 | continue; | |
1157 | } | |
1158 | /* The next 'n1' sectors are allocated in the input image. Copy | |
1159 | only those as they may be followed by unallocated sectors. */ | |
1160 | n = n1; | |
93c65b47 | 1161 | } |
93c65b47 AL |
1162 | } else { |
1163 | n1 = n; | |
f58c7b35 TS |
1164 | } |
1165 | ||
c2abccec MK |
1166 | ret = bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n); |
1167 | if (ret < 0) { | |
3fba9d81 SH |
1168 | error_report("error while reading sector %" PRId64 ": %s", |
1169 | sector_num - bs_offset, strerror(-ret)); | |
c2abccec MK |
1170 | goto out; |
1171 | } | |
ea2384d3 FB |
1172 | /* NOTE: at the same time we convert, we do not write zero |
1173 | sectors to have a chance to compress the image. Ideally, we | |
1174 | should add a specific call to have the info to go faster */ | |
1175 | buf1 = buf; | |
1176 | while (n > 0) { | |
f58c7b35 TS |
1177 | /* If the output image is being created as a copy on write image, |
1178 | copy all sectors even the ones containing only NUL bytes, | |
93c65b47 AL |
1179 | because they may differ from the sectors in the base image. |
1180 | ||
1181 | If the output is to a host device, we also write out | |
1182 | sectors that are entirely 0, since whatever data was | |
1183 | already there is garbage, not 0s. */ | |
f2feebbd | 1184 | if (!has_zero_init || out_baseimg || |
a22f123c | 1185 | is_allocated_sectors_min(buf1, n, &n1, min_sparse)) { |
c2abccec MK |
1186 | ret = bdrv_write(out_bs, sector_num, buf1, n1); |
1187 | if (ret < 0) { | |
3fba9d81 SH |
1188 | error_report("error while writing sector %" PRId64 |
1189 | ": %s", sector_num, strerror(-ret)); | |
c2abccec MK |
1190 | goto out; |
1191 | } | |
ea2384d3 FB |
1192 | } |
1193 | sector_num += n1; | |
1194 | n -= n1; | |
1195 | buf1 += n1 * 512; | |
1196 | } | |
6b837bc4 | 1197 | qemu_progress_print(local_progress, 100); |
ea2384d3 FB |
1198 | } |
1199 | } | |
c2abccec | 1200 | out: |
6b837bc4 | 1201 | qemu_progress_end(); |
c2abccec MK |
1202 | free_option_parameters(create_options); |
1203 | free_option_parameters(param); | |
bb1c0597 | 1204 | qemu_vfree(buf); |
c2abccec MK |
1205 | if (out_bs) { |
1206 | bdrv_delete(out_bs); | |
1207 | } | |
31ca34b8 JS |
1208 | if (bs) { |
1209 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
1210 | if (bs[bs_i]) { | |
1211 | bdrv_delete(bs[bs_i]); | |
1212 | } | |
c2abccec | 1213 | } |
7267c094 | 1214 | g_free(bs); |
c2abccec | 1215 | } |
c2abccec MK |
1216 | if (ret) { |
1217 | return 1; | |
1218 | } | |
ea2384d3 FB |
1219 | return 0; |
1220 | } | |
1221 | ||
57d1a2b6 | 1222 | |
faea38e7 FB |
1223 | static void dump_snapshots(BlockDriverState *bs) |
1224 | { | |
1225 | QEMUSnapshotInfo *sn_tab, *sn; | |
1226 | int nb_sns, i; | |
1227 | char buf[256]; | |
1228 | ||
1229 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
1230 | if (nb_sns <= 0) | |
1231 | return; | |
1232 | printf("Snapshot list:\n"); | |
1233 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
1234 | for(i = 0; i < nb_sns; i++) { | |
1235 | sn = &sn_tab[i]; | |
1236 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); | |
1237 | } | |
7267c094 | 1238 | g_free(sn_tab); |
faea38e7 FB |
1239 | } |
1240 | ||
9699bf0d SH |
1241 | static void dump_json_image_info_list(ImageInfoList *list) |
1242 | { | |
1243 | Error *errp = NULL; | |
1244 | QString *str; | |
1245 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1246 | QObject *obj; | |
1247 | visit_type_ImageInfoList(qmp_output_get_visitor(ov), | |
1248 | &list, NULL, &errp); | |
1249 | obj = qmp_output_get_qobject(ov); | |
1250 | str = qobject_to_json_pretty(obj); | |
1251 | assert(str != NULL); | |
1252 | printf("%s\n", qstring_get_str(str)); | |
1253 | qobject_decref(obj); | |
1254 | qmp_output_visitor_cleanup(ov); | |
1255 | QDECREF(str); | |
1256 | } | |
1257 | ||
c054b3fd BC |
1258 | static void collect_snapshots(BlockDriverState *bs , ImageInfo *info) |
1259 | { | |
1260 | int i, sn_count; | |
1261 | QEMUSnapshotInfo *sn_tab = NULL; | |
1262 | SnapshotInfoList *info_list, *cur_item = NULL; | |
1263 | sn_count = bdrv_snapshot_list(bs, &sn_tab); | |
1264 | ||
1265 | for (i = 0; i < sn_count; i++) { | |
1266 | info->has_snapshots = true; | |
1267 | info_list = g_new0(SnapshotInfoList, 1); | |
1268 | ||
1269 | info_list->value = g_new0(SnapshotInfo, 1); | |
1270 | info_list->value->id = g_strdup(sn_tab[i].id_str); | |
1271 | info_list->value->name = g_strdup(sn_tab[i].name); | |
1272 | info_list->value->vm_state_size = sn_tab[i].vm_state_size; | |
1273 | info_list->value->date_sec = sn_tab[i].date_sec; | |
1274 | info_list->value->date_nsec = sn_tab[i].date_nsec; | |
1275 | info_list->value->vm_clock_sec = sn_tab[i].vm_clock_nsec / 1000000000; | |
1276 | info_list->value->vm_clock_nsec = sn_tab[i].vm_clock_nsec % 1000000000; | |
1277 | ||
1278 | /* XXX: waiting for the qapi to support qemu-queue.h types */ | |
1279 | if (!cur_item) { | |
1280 | info->snapshots = cur_item = info_list; | |
1281 | } else { | |
1282 | cur_item->next = info_list; | |
1283 | cur_item = info_list; | |
1284 | } | |
1285 | ||
1286 | } | |
1287 | ||
1288 | g_free(sn_tab); | |
1289 | } | |
1290 | ||
1291 | static void dump_json_image_info(ImageInfo *info) | |
1292 | { | |
1293 | Error *errp = NULL; | |
1294 | QString *str; | |
1295 | QmpOutputVisitor *ov = qmp_output_visitor_new(); | |
1296 | QObject *obj; | |
1297 | visit_type_ImageInfo(qmp_output_get_visitor(ov), | |
1298 | &info, NULL, &errp); | |
1299 | obj = qmp_output_get_qobject(ov); | |
1300 | str = qobject_to_json_pretty(obj); | |
1301 | assert(str != NULL); | |
1302 | printf("%s\n", qstring_get_str(str)); | |
1303 | qobject_decref(obj); | |
1304 | qmp_output_visitor_cleanup(ov); | |
1305 | QDECREF(str); | |
1306 | } | |
1307 | ||
1308 | static void collect_image_info(BlockDriverState *bs, | |
1309 | ImageInfo *info, | |
1310 | const char *filename, | |
1311 | const char *fmt) | |
ea2384d3 | 1312 | { |
96b8f136 | 1313 | uint64_t total_sectors; |
93b6b2a3 FB |
1314 | char backing_filename[1024]; |
1315 | char backing_filename2[1024]; | |
faea38e7 | 1316 | BlockDriverInfo bdi; |
ea2384d3 | 1317 | |
c054b3fd BC |
1318 | bdrv_get_geometry(bs, &total_sectors); |
1319 | ||
1320 | info->filename = g_strdup(filename); | |
1321 | info->format = g_strdup(bdrv_get_format_name(bs)); | |
1322 | info->virtual_size = total_sectors * 512; | |
1323 | info->actual_size = bdrv_get_allocated_file_size(bs); | |
1324 | info->has_actual_size = info->actual_size >= 0; | |
1325 | if (bdrv_is_encrypted(bs)) { | |
1326 | info->encrypted = true; | |
1327 | info->has_encrypted = true; | |
1328 | } | |
1329 | if (bdrv_get_info(bs, &bdi) >= 0) { | |
1330 | if (bdi.cluster_size != 0) { | |
1331 | info->cluster_size = bdi.cluster_size; | |
1332 | info->has_cluster_size = true; | |
1333 | } | |
1334 | info->dirty_flag = bdi.is_dirty; | |
1335 | info->has_dirty_flag = true; | |
1336 | } | |
1337 | bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename)); | |
1338 | if (backing_filename[0] != '\0') { | |
1339 | info->backing_filename = g_strdup(backing_filename); | |
1340 | info->has_backing_filename = true; | |
1341 | bdrv_get_full_backing_filename(bs, backing_filename2, | |
1342 | sizeof(backing_filename2)); | |
1343 | ||
1344 | if (strcmp(backing_filename, backing_filename2) != 0) { | |
1345 | info->full_backing_filename = | |
1346 | g_strdup(backing_filename2); | |
1347 | info->has_full_backing_filename = true; | |
1348 | } | |
1349 | ||
1350 | if (bs->backing_format[0]) { | |
1351 | info->backing_filename_format = g_strdup(bs->backing_format); | |
1352 | info->has_backing_filename_format = true; | |
1353 | } | |
1354 | } | |
1355 | } | |
1356 | ||
1357 | static void dump_human_image_info(ImageInfo *info) | |
1358 | { | |
1359 | char size_buf[128], dsize_buf[128]; | |
1360 | if (!info->has_actual_size) { | |
1361 | snprintf(dsize_buf, sizeof(dsize_buf), "unavailable"); | |
1362 | } else { | |
1363 | get_human_readable_size(dsize_buf, sizeof(dsize_buf), | |
1364 | info->actual_size); | |
1365 | } | |
1366 | get_human_readable_size(size_buf, sizeof(size_buf), info->virtual_size); | |
1367 | printf("image: %s\n" | |
1368 | "file format: %s\n" | |
1369 | "virtual size: %s (%" PRId64 " bytes)\n" | |
1370 | "disk size: %s\n", | |
1371 | info->filename, info->format, size_buf, | |
1372 | info->virtual_size, | |
1373 | dsize_buf); | |
1374 | ||
1375 | if (info->has_encrypted && info->encrypted) { | |
1376 | printf("encrypted: yes\n"); | |
1377 | } | |
1378 | ||
1379 | if (info->has_cluster_size) { | |
1380 | printf("cluster_size: %" PRId64 "\n", info->cluster_size); | |
1381 | } | |
1382 | ||
1383 | if (info->has_dirty_flag && info->dirty_flag) { | |
1384 | printf("cleanly shut down: no\n"); | |
1385 | } | |
1386 | ||
1387 | if (info->has_backing_filename) { | |
1388 | printf("backing file: %s", info->backing_filename); | |
1389 | if (info->has_full_backing_filename) { | |
1390 | printf(" (actual path: %s)", info->full_backing_filename); | |
1391 | } | |
1392 | putchar('\n'); | |
1393 | if (info->has_backing_filename_format) { | |
1394 | printf("backing file format: %s\n", info->backing_filename_format); | |
1395 | } | |
1396 | } | |
9699bf0d SH |
1397 | |
1398 | if (info->has_snapshots) { | |
1399 | SnapshotInfoList *elem; | |
1400 | char buf[256]; | |
1401 | ||
1402 | printf("Snapshot list:\n"); | |
1403 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
1404 | ||
1405 | /* Ideally bdrv_snapshot_dump() would operate on SnapshotInfoList but | |
1406 | * we convert to the block layer's native QEMUSnapshotInfo for now. | |
1407 | */ | |
1408 | for (elem = info->snapshots; elem; elem = elem->next) { | |
1409 | QEMUSnapshotInfo sn = { | |
1410 | .vm_state_size = elem->value->vm_state_size, | |
1411 | .date_sec = elem->value->date_sec, | |
1412 | .date_nsec = elem->value->date_nsec, | |
1413 | .vm_clock_nsec = elem->value->vm_clock_sec * 1000000000ULL + | |
1414 | elem->value->vm_clock_nsec, | |
1415 | }; | |
1416 | ||
1417 | pstrcpy(sn.id_str, sizeof(sn.id_str), elem->value->id); | |
1418 | pstrcpy(sn.name, sizeof(sn.name), elem->value->name); | |
1419 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), &sn)); | |
1420 | } | |
1421 | } | |
c054b3fd BC |
1422 | } |
1423 | ||
9699bf0d SH |
1424 | static void dump_human_image_info_list(ImageInfoList *list) |
1425 | { | |
1426 | ImageInfoList *elem; | |
1427 | bool delim = false; | |
1428 | ||
1429 | for (elem = list; elem; elem = elem->next) { | |
1430 | if (delim) { | |
1431 | printf("\n"); | |
1432 | } | |
1433 | delim = true; | |
1434 | ||
1435 | dump_human_image_info(elem->value); | |
1436 | } | |
1437 | } | |
1438 | ||
1439 | static gboolean str_equal_func(gconstpointer a, gconstpointer b) | |
1440 | { | |
1441 | return strcmp(a, b) == 0; | |
1442 | } | |
1443 | ||
1444 | /** | |
1445 | * Open an image file chain and return an ImageInfoList | |
1446 | * | |
1447 | * @filename: topmost image filename | |
1448 | * @fmt: topmost image format (may be NULL to autodetect) | |
1449 | * @chain: true - enumerate entire backing file chain | |
1450 | * false - only topmost image file | |
1451 | * | |
1452 | * Returns a list of ImageInfo objects or NULL if there was an error opening an | |
1453 | * image file. If there was an error a message will have been printed to | |
1454 | * stderr. | |
1455 | */ | |
1456 | static ImageInfoList *collect_image_info_list(const char *filename, | |
1457 | const char *fmt, | |
1458 | bool chain) | |
1459 | { | |
1460 | ImageInfoList *head = NULL; | |
1461 | ImageInfoList **last = &head; | |
1462 | GHashTable *filenames; | |
1463 | ||
1464 | filenames = g_hash_table_new_full(g_str_hash, str_equal_func, NULL, NULL); | |
1465 | ||
1466 | while (filename) { | |
1467 | BlockDriverState *bs; | |
1468 | ImageInfo *info; | |
1469 | ImageInfoList *elem; | |
1470 | ||
1471 | if (g_hash_table_lookup_extended(filenames, filename, NULL, NULL)) { | |
1472 | error_report("Backing file '%s' creates an infinite loop.", | |
1473 | filename); | |
1474 | goto err; | |
1475 | } | |
1476 | g_hash_table_insert(filenames, (gpointer)filename, NULL); | |
1477 | ||
1478 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_NO_BACKING, | |
1479 | false); | |
1480 | if (!bs) { | |
1481 | goto err; | |
1482 | } | |
1483 | ||
1484 | info = g_new0(ImageInfo, 1); | |
1485 | collect_image_info(bs, info, filename, fmt); | |
1486 | collect_snapshots(bs, info); | |
1487 | ||
1488 | elem = g_new0(ImageInfoList, 1); | |
1489 | elem->value = info; | |
1490 | *last = elem; | |
1491 | last = &elem->next; | |
1492 | ||
1493 | bdrv_delete(bs); | |
1494 | ||
1495 | filename = fmt = NULL; | |
1496 | if (chain) { | |
1497 | if (info->has_full_backing_filename) { | |
1498 | filename = info->full_backing_filename; | |
1499 | } else if (info->has_backing_filename) { | |
1500 | filename = info->backing_filename; | |
1501 | } | |
1502 | if (info->has_backing_filename_format) { | |
1503 | fmt = info->backing_filename_format; | |
1504 | } | |
1505 | } | |
1506 | } | |
1507 | g_hash_table_destroy(filenames); | |
1508 | return head; | |
1509 | ||
1510 | err: | |
1511 | qapi_free_ImageInfoList(head); | |
1512 | g_hash_table_destroy(filenames); | |
1513 | return NULL; | |
1514 | } | |
1515 | ||
c054b3fd BC |
1516 | static int img_info(int argc, char **argv) |
1517 | { | |
1518 | int c; | |
1519 | OutputFormat output_format = OFORMAT_HUMAN; | |
9699bf0d | 1520 | bool chain = false; |
c054b3fd | 1521 | const char *filename, *fmt, *output; |
9699bf0d | 1522 | ImageInfoList *list; |
c054b3fd | 1523 | |
ea2384d3 | 1524 | fmt = NULL; |
c054b3fd | 1525 | output = NULL; |
ea2384d3 | 1526 | for(;;) { |
c054b3fd BC |
1527 | int option_index = 0; |
1528 | static const struct option long_options[] = { | |
1529 | {"help", no_argument, 0, 'h'}, | |
1530 | {"format", required_argument, 0, 'f'}, | |
1531 | {"output", required_argument, 0, OPTION_OUTPUT}, | |
9699bf0d | 1532 | {"backing-chain", no_argument, 0, OPTION_BACKING_CHAIN}, |
c054b3fd BC |
1533 | {0, 0, 0, 0} |
1534 | }; | |
1535 | c = getopt_long(argc, argv, "f:h", | |
1536 | long_options, &option_index); | |
b8fb60da | 1537 | if (c == -1) { |
ea2384d3 | 1538 | break; |
b8fb60da | 1539 | } |
ea2384d3 | 1540 | switch(c) { |
ef87394c | 1541 | case '?': |
ea2384d3 FB |
1542 | case 'h': |
1543 | help(); | |
1544 | break; | |
1545 | case 'f': | |
1546 | fmt = optarg; | |
1547 | break; | |
c054b3fd BC |
1548 | case OPTION_OUTPUT: |
1549 | output = optarg; | |
1550 | break; | |
9699bf0d SH |
1551 | case OPTION_BACKING_CHAIN: |
1552 | chain = true; | |
1553 | break; | |
ea2384d3 FB |
1554 | } |
1555 | } | |
b8fb60da | 1556 | if (optind >= argc) { |
ea2384d3 | 1557 | help(); |
b8fb60da | 1558 | } |
ea2384d3 FB |
1559 | filename = argv[optind++]; |
1560 | ||
c054b3fd BC |
1561 | if (output && !strcmp(output, "json")) { |
1562 | output_format = OFORMAT_JSON; | |
1563 | } else if (output && !strcmp(output, "human")) { | |
1564 | output_format = OFORMAT_HUMAN; | |
1565 | } else if (output) { | |
1566 | error_report("--output must be used with human or json as argument."); | |
c2abccec MK |
1567 | return 1; |
1568 | } | |
c054b3fd | 1569 | |
9699bf0d SH |
1570 | list = collect_image_info_list(filename, fmt, chain); |
1571 | if (!list) { | |
c2abccec | 1572 | return 1; |
faea38e7 | 1573 | } |
c054b3fd | 1574 | |
c054b3fd BC |
1575 | switch (output_format) { |
1576 | case OFORMAT_HUMAN: | |
9699bf0d | 1577 | dump_human_image_info_list(list); |
c054b3fd BC |
1578 | break; |
1579 | case OFORMAT_JSON: | |
9699bf0d SH |
1580 | if (chain) { |
1581 | dump_json_image_info_list(list); | |
1582 | } else { | |
1583 | dump_json_image_info(list->value); | |
1584 | } | |
c054b3fd | 1585 | break; |
faea38e7 | 1586 | } |
c054b3fd | 1587 | |
9699bf0d | 1588 | qapi_free_ImageInfoList(list); |
ea2384d3 FB |
1589 | return 0; |
1590 | } | |
1591 | ||
f7b4a940 AL |
1592 | #define SNAPSHOT_LIST 1 |
1593 | #define SNAPSHOT_CREATE 2 | |
1594 | #define SNAPSHOT_APPLY 3 | |
1595 | #define SNAPSHOT_DELETE 4 | |
1596 | ||
153859be | 1597 | static int img_snapshot(int argc, char **argv) |
f7b4a940 AL |
1598 | { |
1599 | BlockDriverState *bs; | |
1600 | QEMUSnapshotInfo sn; | |
1601 | char *filename, *snapshot_name = NULL; | |
c2abccec | 1602 | int c, ret = 0, bdrv_oflags; |
f7b4a940 AL |
1603 | int action = 0; |
1604 | qemu_timeval tv; | |
1605 | ||
710da702 | 1606 | bdrv_oflags = BDRV_O_FLAGS | BDRV_O_RDWR; |
f7b4a940 AL |
1607 | /* Parse commandline parameters */ |
1608 | for(;;) { | |
1609 | c = getopt(argc, argv, "la:c:d:h"); | |
b8fb60da | 1610 | if (c == -1) { |
f7b4a940 | 1611 | break; |
b8fb60da | 1612 | } |
f7b4a940 | 1613 | switch(c) { |
ef87394c | 1614 | case '?': |
f7b4a940 AL |
1615 | case 'h': |
1616 | help(); | |
153859be | 1617 | return 0; |
f7b4a940 AL |
1618 | case 'l': |
1619 | if (action) { | |
1620 | help(); | |
153859be | 1621 | return 0; |
f7b4a940 AL |
1622 | } |
1623 | action = SNAPSHOT_LIST; | |
f5edb014 | 1624 | bdrv_oflags &= ~BDRV_O_RDWR; /* no need for RW */ |
f7b4a940 AL |
1625 | break; |
1626 | case 'a': | |
1627 | if (action) { | |
1628 | help(); | |
153859be | 1629 | return 0; |
f7b4a940 AL |
1630 | } |
1631 | action = SNAPSHOT_APPLY; | |
1632 | snapshot_name = optarg; | |
1633 | break; | |
1634 | case 'c': | |
1635 | if (action) { | |
1636 | help(); | |
153859be | 1637 | return 0; |
f7b4a940 AL |
1638 | } |
1639 | action = SNAPSHOT_CREATE; | |
1640 | snapshot_name = optarg; | |
1641 | break; | |
1642 | case 'd': | |
1643 | if (action) { | |
1644 | help(); | |
153859be | 1645 | return 0; |
f7b4a940 AL |
1646 | } |
1647 | action = SNAPSHOT_DELETE; | |
1648 | snapshot_name = optarg; | |
1649 | break; | |
1650 | } | |
1651 | } | |
1652 | ||
b8fb60da | 1653 | if (optind >= argc) { |
f7b4a940 | 1654 | help(); |
b8fb60da | 1655 | } |
f7b4a940 AL |
1656 | filename = argv[optind++]; |
1657 | ||
1658 | /* Open the image */ | |
f0536bb8 | 1659 | bs = bdrv_new_open(filename, NULL, bdrv_oflags, true); |
c2abccec MK |
1660 | if (!bs) { |
1661 | return 1; | |
1662 | } | |
f7b4a940 AL |
1663 | |
1664 | /* Perform the requested action */ | |
1665 | switch(action) { | |
1666 | case SNAPSHOT_LIST: | |
1667 | dump_snapshots(bs); | |
1668 | break; | |
1669 | ||
1670 | case SNAPSHOT_CREATE: | |
1671 | memset(&sn, 0, sizeof(sn)); | |
1672 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
1673 | ||
1674 | qemu_gettimeofday(&tv); | |
1675 | sn.date_sec = tv.tv_sec; | |
1676 | sn.date_nsec = tv.tv_usec * 1000; | |
1677 | ||
1678 | ret = bdrv_snapshot_create(bs, &sn); | |
b8fb60da | 1679 | if (ret) { |
15654a6d | 1680 | error_report("Could not create snapshot '%s': %d (%s)", |
f7b4a940 | 1681 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1682 | } |
f7b4a940 AL |
1683 | break; |
1684 | ||
1685 | case SNAPSHOT_APPLY: | |
1686 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
b8fb60da | 1687 | if (ret) { |
15654a6d | 1688 | error_report("Could not apply snapshot '%s': %d (%s)", |
f7b4a940 | 1689 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1690 | } |
f7b4a940 AL |
1691 | break; |
1692 | ||
1693 | case SNAPSHOT_DELETE: | |
1694 | ret = bdrv_snapshot_delete(bs, snapshot_name); | |
b8fb60da | 1695 | if (ret) { |
15654a6d | 1696 | error_report("Could not delete snapshot '%s': %d (%s)", |
f7b4a940 | 1697 | snapshot_name, ret, strerror(-ret)); |
b8fb60da | 1698 | } |
f7b4a940 AL |
1699 | break; |
1700 | } | |
1701 | ||
1702 | /* Cleanup */ | |
1703 | bdrv_delete(bs); | |
c2abccec MK |
1704 | if (ret) { |
1705 | return 1; | |
1706 | } | |
153859be | 1707 | return 0; |
f7b4a940 AL |
1708 | } |
1709 | ||
3e85c6fd KW |
1710 | static int img_rebase(int argc, char **argv) |
1711 | { | |
c2abccec | 1712 | BlockDriverState *bs, *bs_old_backing = NULL, *bs_new_backing = NULL; |
f163d073 | 1713 | BlockDriver *old_backing_drv, *new_backing_drv; |
3e85c6fd | 1714 | char *filename; |
661a0f71 | 1715 | const char *fmt, *cache, *out_basefmt, *out_baseimg; |
3e85c6fd KW |
1716 | int c, flags, ret; |
1717 | int unsafe = 0; | |
6b837bc4 | 1718 | int progress = 0; |
3e85c6fd KW |
1719 | |
1720 | /* Parse commandline parameters */ | |
e53dbee0 | 1721 | fmt = NULL; |
661a0f71 | 1722 | cache = BDRV_DEFAULT_CACHE; |
3e85c6fd KW |
1723 | out_baseimg = NULL; |
1724 | out_basefmt = NULL; | |
3e85c6fd | 1725 | for(;;) { |
661a0f71 | 1726 | c = getopt(argc, argv, "uhf:F:b:pt:"); |
b8fb60da | 1727 | if (c == -1) { |
3e85c6fd | 1728 | break; |
b8fb60da | 1729 | } |
3e85c6fd | 1730 | switch(c) { |
ef87394c | 1731 | case '?': |
3e85c6fd KW |
1732 | case 'h': |
1733 | help(); | |
1734 | return 0; | |
e53dbee0 KW |
1735 | case 'f': |
1736 | fmt = optarg; | |
1737 | break; | |
3e85c6fd KW |
1738 | case 'F': |
1739 | out_basefmt = optarg; | |
1740 | break; | |
1741 | case 'b': | |
1742 | out_baseimg = optarg; | |
1743 | break; | |
1744 | case 'u': | |
1745 | unsafe = 1; | |
1746 | break; | |
6b837bc4 JS |
1747 | case 'p': |
1748 | progress = 1; | |
1749 | break; | |
661a0f71 FS |
1750 | case 't': |
1751 | cache = optarg; | |
1752 | break; | |
3e85c6fd KW |
1753 | } |
1754 | } | |
1755 | ||
9a9d9dba | 1756 | if ((optind >= argc) || (!unsafe && !out_baseimg)) { |
3e85c6fd | 1757 | help(); |
b8fb60da | 1758 | } |
3e85c6fd KW |
1759 | filename = argv[optind++]; |
1760 | ||
6b837bc4 JS |
1761 | qemu_progress_init(progress, 2.0); |
1762 | qemu_progress_print(0, 100); | |
1763 | ||
661a0f71 | 1764 | flags = BDRV_O_RDWR | (unsafe ? BDRV_O_NO_BACKING : 0); |
c3993cdc | 1765 | ret = bdrv_parse_cache_flags(cache, &flags); |
661a0f71 FS |
1766 | if (ret < 0) { |
1767 | error_report("Invalid cache option: %s", cache); | |
1768 | return -1; | |
1769 | } | |
1770 | ||
3e85c6fd KW |
1771 | /* |
1772 | * Open the images. | |
1773 | * | |
1774 | * Ignore the old backing file for unsafe rebase in case we want to correct | |
1775 | * the reference to a renamed or moved backing file. | |
1776 | */ | |
f0536bb8 | 1777 | bs = bdrv_new_open(filename, fmt, flags, true); |
c2abccec MK |
1778 | if (!bs) { |
1779 | return 1; | |
1780 | } | |
3e85c6fd KW |
1781 | |
1782 | /* Find the right drivers for the backing files */ | |
1783 | old_backing_drv = NULL; | |
1784 | new_backing_drv = NULL; | |
1785 | ||
1786 | if (!unsafe && bs->backing_format[0] != '\0') { | |
1787 | old_backing_drv = bdrv_find_format(bs->backing_format); | |
1788 | if (old_backing_drv == NULL) { | |
15654a6d | 1789 | error_report("Invalid format name: '%s'", bs->backing_format); |
c2abccec MK |
1790 | ret = -1; |
1791 | goto out; | |
3e85c6fd KW |
1792 | } |
1793 | } | |
1794 | ||
1795 | if (out_basefmt != NULL) { | |
1796 | new_backing_drv = bdrv_find_format(out_basefmt); | |
1797 | if (new_backing_drv == NULL) { | |
15654a6d | 1798 | error_report("Invalid format name: '%s'", out_basefmt); |
c2abccec MK |
1799 | ret = -1; |
1800 | goto out; | |
3e85c6fd KW |
1801 | } |
1802 | } | |
1803 | ||
1804 | /* For safe rebasing we need to compare old and new backing file */ | |
1805 | if (unsafe) { | |
1806 | /* Make the compiler happy */ | |
1807 | bs_old_backing = NULL; | |
1808 | bs_new_backing = NULL; | |
1809 | } else { | |
1810 | char backing_name[1024]; | |
1811 | ||
1812 | bs_old_backing = bdrv_new("old_backing"); | |
1813 | bdrv_get_backing_filename(bs, backing_name, sizeof(backing_name)); | |
c2abccec MK |
1814 | ret = bdrv_open(bs_old_backing, backing_name, BDRV_O_FLAGS, |
1815 | old_backing_drv); | |
1816 | if (ret) { | |
15654a6d | 1817 | error_report("Could not open old backing file '%s'", backing_name); |
c2abccec | 1818 | goto out; |
3e85c6fd | 1819 | } |
a616673d AB |
1820 | if (out_baseimg[0]) { |
1821 | bs_new_backing = bdrv_new("new_backing"); | |
1822 | ret = bdrv_open(bs_new_backing, out_baseimg, BDRV_O_FLAGS, | |
c2abccec | 1823 | new_backing_drv); |
a616673d AB |
1824 | if (ret) { |
1825 | error_report("Could not open new backing file '%s'", | |
1826 | out_baseimg); | |
1827 | goto out; | |
1828 | } | |
3e85c6fd KW |
1829 | } |
1830 | } | |
1831 | ||
1832 | /* | |
1833 | * Check each unallocated cluster in the COW file. If it is unallocated, | |
1834 | * accesses go to the backing file. We must therefore compare this cluster | |
1835 | * in the old and new backing file, and if they differ we need to copy it | |
1836 | * from the old backing file into the COW file. | |
1837 | * | |
1838 | * If qemu-img crashes during this step, no harm is done. The content of | |
1839 | * the image is the same as the original one at any time. | |
1840 | */ | |
1841 | if (!unsafe) { | |
1842 | uint64_t num_sectors; | |
87a1b3e3 | 1843 | uint64_t old_backing_num_sectors; |
a616673d | 1844 | uint64_t new_backing_num_sectors = 0; |
3e85c6fd | 1845 | uint64_t sector; |
cc60e327 | 1846 | int n; |
d6771bfa T |
1847 | uint8_t * buf_old; |
1848 | uint8_t * buf_new; | |
1f710495 | 1849 | float local_progress = 0; |
d6771bfa | 1850 | |
bb1c0597 KW |
1851 | buf_old = qemu_blockalign(bs, IO_BUF_SIZE); |
1852 | buf_new = qemu_blockalign(bs, IO_BUF_SIZE); | |
3e85c6fd KW |
1853 | |
1854 | bdrv_get_geometry(bs, &num_sectors); | |
87a1b3e3 | 1855 | bdrv_get_geometry(bs_old_backing, &old_backing_num_sectors); |
a616673d AB |
1856 | if (bs_new_backing) { |
1857 | bdrv_get_geometry(bs_new_backing, &new_backing_num_sectors); | |
1858 | } | |
3e85c6fd | 1859 | |
1f710495 KW |
1860 | if (num_sectors != 0) { |
1861 | local_progress = (float)100 / | |
1862 | (num_sectors / MIN(num_sectors, IO_BUF_SIZE / 512)); | |
1863 | } | |
1864 | ||
3e85c6fd KW |
1865 | for (sector = 0; sector < num_sectors; sector += n) { |
1866 | ||
1867 | /* How many sectors can we handle with the next read? */ | |
1868 | if (sector + (IO_BUF_SIZE / 512) <= num_sectors) { | |
1869 | n = (IO_BUF_SIZE / 512); | |
1870 | } else { | |
1871 | n = num_sectors - sector; | |
1872 | } | |
1873 | ||
1874 | /* If the cluster is allocated, we don't need to take action */ | |
cc60e327 KW |
1875 | ret = bdrv_is_allocated(bs, sector, n, &n); |
1876 | if (ret) { | |
3e85c6fd KW |
1877 | continue; |
1878 | } | |
1879 | ||
87a1b3e3 KW |
1880 | /* |
1881 | * Read old and new backing file and take into consideration that | |
1882 | * backing files may be smaller than the COW image. | |
1883 | */ | |
1884 | if (sector >= old_backing_num_sectors) { | |
1885 | memset(buf_old, 0, n * BDRV_SECTOR_SIZE); | |
1886 | } else { | |
1887 | if (sector + n > old_backing_num_sectors) { | |
1888 | n = old_backing_num_sectors - sector; | |
1889 | } | |
1890 | ||
1891 | ret = bdrv_read(bs_old_backing, sector, buf_old, n); | |
1892 | if (ret < 0) { | |
1893 | error_report("error while reading from old backing file"); | |
1894 | goto out; | |
1895 | } | |
3e85c6fd | 1896 | } |
87a1b3e3 | 1897 | |
a616673d | 1898 | if (sector >= new_backing_num_sectors || !bs_new_backing) { |
87a1b3e3 KW |
1899 | memset(buf_new, 0, n * BDRV_SECTOR_SIZE); |
1900 | } else { | |
1901 | if (sector + n > new_backing_num_sectors) { | |
1902 | n = new_backing_num_sectors - sector; | |
1903 | } | |
1904 | ||
1905 | ret = bdrv_read(bs_new_backing, sector, buf_new, n); | |
1906 | if (ret < 0) { | |
1907 | error_report("error while reading from new backing file"); | |
1908 | goto out; | |
1909 | } | |
3e85c6fd KW |
1910 | } |
1911 | ||
1912 | /* If they differ, we need to write to the COW file */ | |
1913 | uint64_t written = 0; | |
1914 | ||
1915 | while (written < n) { | |
1916 | int pnum; | |
1917 | ||
1918 | if (compare_sectors(buf_old + written * 512, | |
60b1bd4f | 1919 | buf_new + written * 512, n - written, &pnum)) |
3e85c6fd KW |
1920 | { |
1921 | ret = bdrv_write(bs, sector + written, | |
1922 | buf_old + written * 512, pnum); | |
1923 | if (ret < 0) { | |
15654a6d | 1924 | error_report("Error while writing to COW image: %s", |
3e85c6fd | 1925 | strerror(-ret)); |
c2abccec | 1926 | goto out; |
3e85c6fd KW |
1927 | } |
1928 | } | |
1929 | ||
1930 | written += pnum; | |
1931 | } | |
6b837bc4 | 1932 | qemu_progress_print(local_progress, 100); |
3e85c6fd | 1933 | } |
d6771bfa | 1934 | |
bb1c0597 KW |
1935 | qemu_vfree(buf_old); |
1936 | qemu_vfree(buf_new); | |
3e85c6fd KW |
1937 | } |
1938 | ||
1939 | /* | |
1940 | * Change the backing file. All clusters that are different from the old | |
1941 | * backing file are overwritten in the COW file now, so the visible content | |
1942 | * doesn't change when we switch the backing file. | |
1943 | */ | |
a616673d AB |
1944 | if (out_baseimg && *out_baseimg) { |
1945 | ret = bdrv_change_backing_file(bs, out_baseimg, out_basefmt); | |
1946 | } else { | |
1947 | ret = bdrv_change_backing_file(bs, NULL, NULL); | |
1948 | } | |
1949 | ||
3e85c6fd | 1950 | if (ret == -ENOSPC) { |
15654a6d JS |
1951 | error_report("Could not change the backing file to '%s': No " |
1952 | "space left in the file header", out_baseimg); | |
3e85c6fd | 1953 | } else if (ret < 0) { |
15654a6d | 1954 | error_report("Could not change the backing file to '%s': %s", |
3e85c6fd KW |
1955 | out_baseimg, strerror(-ret)); |
1956 | } | |
1957 | ||
6b837bc4 | 1958 | qemu_progress_print(100, 0); |
3e85c6fd KW |
1959 | /* |
1960 | * TODO At this point it is possible to check if any clusters that are | |
1961 | * allocated in the COW file are the same in the backing file. If so, they | |
1962 | * could be dropped from the COW file. Don't do this before switching the | |
1963 | * backing file, in case of a crash this would lead to corruption. | |
1964 | */ | |
c2abccec | 1965 | out: |
6b837bc4 | 1966 | qemu_progress_end(); |
3e85c6fd KW |
1967 | /* Cleanup */ |
1968 | if (!unsafe) { | |
eb863add KW |
1969 | if (bs_old_backing != NULL) { |
1970 | bdrv_delete(bs_old_backing); | |
1971 | } | |
1972 | if (bs_new_backing != NULL) { | |
1973 | bdrv_delete(bs_new_backing); | |
1974 | } | |
3e85c6fd KW |
1975 | } |
1976 | ||
1977 | bdrv_delete(bs); | |
c2abccec MK |
1978 | if (ret) { |
1979 | return 1; | |
1980 | } | |
3e85c6fd KW |
1981 | return 0; |
1982 | } | |
1983 | ||
ae6b0ed6 SH |
1984 | static int img_resize(int argc, char **argv) |
1985 | { | |
1986 | int c, ret, relative; | |
1987 | const char *filename, *fmt, *size; | |
1988 | int64_t n, total_size; | |
2a81998a | 1989 | BlockDriverState *bs = NULL; |
20caf0f7 DXW |
1990 | QemuOpts *param; |
1991 | static QemuOptsList resize_options = { | |
1992 | .name = "resize_options", | |
1993 | .head = QTAILQ_HEAD_INITIALIZER(resize_options.head), | |
1994 | .desc = { | |
1995 | { | |
1996 | .name = BLOCK_OPT_SIZE, | |
1997 | .type = QEMU_OPT_SIZE, | |
1998 | .help = "Virtual disk size" | |
1999 | }, { | |
2000 | /* end of list */ | |
2001 | } | |
ae6b0ed6 | 2002 | }, |
ae6b0ed6 SH |
2003 | }; |
2004 | ||
e80fec7f KW |
2005 | /* Remove size from argv manually so that negative numbers are not treated |
2006 | * as options by getopt. */ | |
2007 | if (argc < 3) { | |
2008 | help(); | |
2009 | return 1; | |
2010 | } | |
2011 | ||
2012 | size = argv[--argc]; | |
2013 | ||
2014 | /* Parse getopt arguments */ | |
ae6b0ed6 SH |
2015 | fmt = NULL; |
2016 | for(;;) { | |
2017 | c = getopt(argc, argv, "f:h"); | |
2018 | if (c == -1) { | |
2019 | break; | |
2020 | } | |
2021 | switch(c) { | |
ef87394c | 2022 | case '?': |
ae6b0ed6 SH |
2023 | case 'h': |
2024 | help(); | |
2025 | break; | |
2026 | case 'f': | |
2027 | fmt = optarg; | |
2028 | break; | |
2029 | } | |
2030 | } | |
e80fec7f | 2031 | if (optind >= argc) { |
ae6b0ed6 SH |
2032 | help(); |
2033 | } | |
2034 | filename = argv[optind++]; | |
ae6b0ed6 SH |
2035 | |
2036 | /* Choose grow, shrink, or absolute resize mode */ | |
2037 | switch (size[0]) { | |
2038 | case '+': | |
2039 | relative = 1; | |
2040 | size++; | |
2041 | break; | |
2042 | case '-': | |
2043 | relative = -1; | |
2044 | size++; | |
2045 | break; | |
2046 | default: | |
2047 | relative = 0; | |
2048 | break; | |
2049 | } | |
2050 | ||
2051 | /* Parse size */ | |
e478b448 | 2052 | param = qemu_opts_create_nofail(&resize_options); |
20caf0f7 | 2053 | if (qemu_opt_set(param, BLOCK_OPT_SIZE, size)) { |
ae6b0ed6 | 2054 | /* Error message already printed when size parsing fails */ |
2a81998a | 2055 | ret = -1; |
20caf0f7 | 2056 | qemu_opts_del(param); |
2a81998a | 2057 | goto out; |
ae6b0ed6 | 2058 | } |
20caf0f7 DXW |
2059 | n = qemu_opt_get_size(param, BLOCK_OPT_SIZE, 0); |
2060 | qemu_opts_del(param); | |
ae6b0ed6 | 2061 | |
f0536bb8 | 2062 | bs = bdrv_new_open(filename, fmt, BDRV_O_FLAGS | BDRV_O_RDWR, true); |
c2abccec | 2063 | if (!bs) { |
2a81998a JS |
2064 | ret = -1; |
2065 | goto out; | |
c2abccec | 2066 | } |
ae6b0ed6 SH |
2067 | |
2068 | if (relative) { | |
2069 | total_size = bdrv_getlength(bs) + n * relative; | |
2070 | } else { | |
2071 | total_size = n; | |
2072 | } | |
2073 | if (total_size <= 0) { | |
15654a6d | 2074 | error_report("New image size must be positive"); |
c2abccec MK |
2075 | ret = -1; |
2076 | goto out; | |
ae6b0ed6 SH |
2077 | } |
2078 | ||
2079 | ret = bdrv_truncate(bs, total_size); | |
2080 | switch (ret) { | |
2081 | case 0: | |
2082 | printf("Image resized.\n"); | |
2083 | break; | |
2084 | case -ENOTSUP: | |
259b2173 | 2085 | error_report("This image does not support resize"); |
ae6b0ed6 SH |
2086 | break; |
2087 | case -EACCES: | |
15654a6d | 2088 | error_report("Image is read-only"); |
ae6b0ed6 SH |
2089 | break; |
2090 | default: | |
15654a6d | 2091 | error_report("Error resizing image (%d)", -ret); |
ae6b0ed6 SH |
2092 | break; |
2093 | } | |
c2abccec | 2094 | out: |
2a81998a JS |
2095 | if (bs) { |
2096 | bdrv_delete(bs); | |
2097 | } | |
c2abccec MK |
2098 | if (ret) { |
2099 | return 1; | |
2100 | } | |
ae6b0ed6 SH |
2101 | return 0; |
2102 | } | |
2103 | ||
c227f099 | 2104 | static const img_cmd_t img_cmds[] = { |
153859be SB |
2105 | #define DEF(option, callback, arg_string) \ |
2106 | { option, callback }, | |
2107 | #include "qemu-img-cmds.h" | |
2108 | #undef DEF | |
2109 | #undef GEN_DOCS | |
2110 | { NULL, NULL, }, | |
2111 | }; | |
2112 | ||
ea2384d3 FB |
2113 | int main(int argc, char **argv) |
2114 | { | |
c227f099 | 2115 | const img_cmd_t *cmd; |
153859be | 2116 | const char *cmdname; |
ea2384d3 | 2117 | |
53f76e58 KW |
2118 | error_set_progname(argv[0]); |
2119 | ||
2592c59a | 2120 | qemu_init_main_loop(); |
ea2384d3 FB |
2121 | bdrv_init(); |
2122 | if (argc < 2) | |
2123 | help(); | |
153859be | 2124 | cmdname = argv[1]; |
8f9b157e | 2125 | argc--; argv++; |
153859be SB |
2126 | |
2127 | /* find the command */ | |
2128 | for(cmd = img_cmds; cmd->name != NULL; cmd++) { | |
2129 | if (!strcmp(cmdname, cmd->name)) { | |
2130 | return cmd->handler(argc, argv); | |
2131 | } | |
ea2384d3 | 2132 | } |
153859be SB |
2133 | |
2134 | /* not found */ | |
2135 | help(); | |
ea2384d3 FB |
2136 | return 0; |
2137 | } |