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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 | */ | |
faf07963 | 24 | #include "qemu-common.h" |
9ea2ea71 | 25 | #include "qemu-option.h" |
f7b4a940 | 26 | #include "osdep.h" |
ec36ba14 | 27 | #include "block_int.h" |
9230eaf6 | 28 | #include <stdio.h> |
ea2384d3 | 29 | |
e8445331 FB |
30 | #ifdef _WIN32 |
31 | #include <windows.h> | |
32 | #endif | |
33 | ||
137519ce AJ |
34 | /* Default to cache=writeback as data integrity is not important for qemu-tcg. */ |
35 | #define BRDV_O_FLAGS BDRV_O_CACHE_WB | |
36 | ||
a5e50b26 | 37 | static void QEMU_NORETURN error(const char *fmt, ...) |
ea2384d3 FB |
38 | { |
39 | va_list ap; | |
40 | va_start(ap, fmt); | |
57d1a2b6 | 41 | fprintf(stderr, "qemu-img: "); |
ea2384d3 FB |
42 | vfprintf(stderr, fmt, ap); |
43 | fprintf(stderr, "\n"); | |
44 | exit(1); | |
45 | va_end(ap); | |
46 | } | |
47 | ||
48 | static void format_print(void *opaque, const char *name) | |
49 | { | |
50 | printf(" %s", name); | |
51 | } | |
52 | ||
d2c639d6 | 53 | /* Please keep in synch with qemu-img.texi */ |
3f379ab1 | 54 | static void help(void) |
ea2384d3 | 55 | { |
68d0f70e | 56 | printf("qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2008 Fabrice Bellard\n" |
57d1a2b6 | 57 | "usage: qemu-img command [command options]\n" |
ea2384d3 FB |
58 | "QEMU disk image utility\n" |
59 | "\n" | |
60 | "Command syntax:\n" | |
1585969c | 61 | " check [-f fmt] filename\n" |
9230eaf6 | 62 | " create [-e] [-6] [-F fmt] [-b base_image] [-f fmt] filename [size]\n" |
ea2384d3 | 63 | " commit [-f fmt] filename\n" |
f58c7b35 | 64 | " convert [-c] [-e] [-6] [-f fmt] [-O output_fmt] [-B output_base_image] filename [filename2 [...]] output_filename\n" |
ea2384d3 | 65 | " info [-f fmt] filename\n" |
d2c639d6 | 66 | " snapshot [-l | -a snapshot | -c snapshot | -d snapshot] filename\n" |
ea2384d3 FB |
67 | "\n" |
68 | "Command parameters:\n" | |
69 | " 'filename' is a disk image filename\n" | |
70 | " 'base_image' is the read-only disk image which is used as base for a copy on\n" | |
71 | " write image; the copy on write image only stores the modified data\n" | |
f58c7b35 TS |
72 | " 'output_base_image' forces the output image to be created as a copy on write\n" |
73 | " image of the specified base image; 'output_base_image' should have the same\n" | |
74 | " content as the input's base image, however the path, image format, etc may\n" | |
75 | " differ\n" | |
ea2384d3 | 76 | " 'fmt' is the disk image format. It is guessed automatically in most cases\n" |
d2c639d6 | 77 | " 'size' is the disk image size in kilobytes. Optional suffixes\n" |
2fbc4095 AJ |
78 | " 'M' (megabyte, 1024 * 1024) and 'G' (gigabyte, 1024 * 1024 * 1024) are\n" |
79 | " supported any 'k' or 'K' is ignored\n" | |
ea2384d3 FB |
80 | " 'output_filename' is the destination disk image filename\n" |
81 | " 'output_fmt' is the destination format\n" | |
82 | " '-c' indicates that target image must be compressed (qcow format only)\n" | |
83 | " '-e' indicates that the target image must be encrypted (qcow format only)\n" | |
ec36ba14 | 84 | " '-6' indicates that the target image must use compatibility level 6 (vmdk format only)\n" |
d2c639d6 | 85 | " '-h' with or without a command shows this help and lists the supported formats\n" |
f7b4a940 | 86 | "\n" |
d2c639d6 BS |
87 | "Parameters to snapshot subcommand:\n" |
88 | " 'snapshot' is the name of the snapshot to create, apply or delete\n" | |
89 | " '-a' applies a snapshot (revert disk to saved state)\n" | |
90 | " '-c' creates a snapshot\n" | |
91 | " '-d' deletes a snapshot\n" | |
92 | " '-l' lists all snapshots in the given image\n" | |
ea2384d3 | 93 | ); |
d2c639d6 | 94 | printf("\nSupported formats:"); |
ea2384d3 FB |
95 | bdrv_iterate_format(format_print, NULL); |
96 | printf("\n"); | |
97 | exit(1); | |
98 | } | |
99 | ||
ea2384d3 FB |
100 | #if defined(WIN32) |
101 | /* XXX: put correct support for win32 */ | |
102 | static int read_password(char *buf, int buf_size) | |
103 | { | |
104 | int c, i; | |
105 | printf("Password: "); | |
106 | fflush(stdout); | |
107 | i = 0; | |
108 | for(;;) { | |
109 | c = getchar(); | |
110 | if (c == '\n') | |
111 | break; | |
112 | if (i < (buf_size - 1)) | |
113 | buf[i++] = c; | |
114 | } | |
115 | buf[i] = '\0'; | |
116 | return 0; | |
117 | } | |
118 | ||
119 | #else | |
120 | ||
121 | #include <termios.h> | |
122 | ||
123 | static struct termios oldtty; | |
124 | ||
125 | static void term_exit(void) | |
126 | { | |
127 | tcsetattr (0, TCSANOW, &oldtty); | |
128 | } | |
129 | ||
130 | static void term_init(void) | |
131 | { | |
132 | struct termios tty; | |
133 | ||
134 | tcgetattr (0, &tty); | |
135 | oldtty = tty; | |
136 | ||
137 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
138 | |INLCR|IGNCR|ICRNL|IXON); | |
139 | tty.c_oflag |= OPOST; | |
140 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
141 | tty.c_cflag &= ~(CSIZE|PARENB); | |
142 | tty.c_cflag |= CS8; | |
143 | tty.c_cc[VMIN] = 1; | |
144 | tty.c_cc[VTIME] = 0; | |
3b46e624 | 145 | |
ea2384d3 FB |
146 | tcsetattr (0, TCSANOW, &tty); |
147 | ||
148 | atexit(term_exit); | |
149 | } | |
150 | ||
3f379ab1 | 151 | static int read_password(char *buf, int buf_size) |
ea2384d3 FB |
152 | { |
153 | uint8_t ch; | |
154 | int i, ret; | |
155 | ||
156 | printf("password: "); | |
157 | fflush(stdout); | |
158 | term_init(); | |
159 | i = 0; | |
160 | for(;;) { | |
161 | ret = read(0, &ch, 1); | |
162 | if (ret == -1) { | |
163 | if (errno == EAGAIN || errno == EINTR) { | |
164 | continue; | |
165 | } else { | |
166 | ret = -1; | |
167 | break; | |
168 | } | |
169 | } else if (ret == 0) { | |
170 | ret = -1; | |
171 | break; | |
172 | } else { | |
173 | if (ch == '\r') { | |
174 | ret = 0; | |
175 | break; | |
176 | } | |
177 | if (i < (buf_size - 1)) | |
178 | buf[i++] = ch; | |
179 | } | |
180 | } | |
181 | term_exit(); | |
182 | buf[i] = '\0'; | |
183 | printf("\n"); | |
184 | return ret; | |
185 | } | |
186 | #endif | |
187 | ||
75c23805 FB |
188 | static BlockDriverState *bdrv_new_open(const char *filename, |
189 | const char *fmt) | |
190 | { | |
191 | BlockDriverState *bs; | |
192 | BlockDriver *drv; | |
193 | char password[256]; | |
194 | ||
195 | bs = bdrv_new(""); | |
196 | if (!bs) | |
197 | error("Not enough memory"); | |
198 | if (fmt) { | |
199 | drv = bdrv_find_format(fmt); | |
200 | if (!drv) | |
201 | error("Unknown file format '%s'", fmt); | |
202 | } else { | |
203 | drv = NULL; | |
204 | } | |
137519ce | 205 | if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { |
75c23805 FB |
206 | error("Could not open '%s'", filename); |
207 | } | |
208 | if (bdrv_is_encrypted(bs)) { | |
209 | printf("Disk image '%s' is encrypted.\n", filename); | |
210 | if (read_password(password, sizeof(password)) < 0) | |
211 | error("No password given"); | |
212 | if (bdrv_set_key(bs, password) < 0) | |
213 | error("invalid password"); | |
214 | } | |
215 | return bs; | |
216 | } | |
217 | ||
efa84d43 KW |
218 | static void add_old_style_options(const char *fmt, QEMUOptionParameter *list, |
219 | int flags, const char *base_filename, const char *base_fmt) | |
220 | { | |
221 | if (flags & BLOCK_FLAG_ENCRYPT) { | |
222 | if (set_option_parameter(list, BLOCK_OPT_ENCRYPT, "on")) { | |
223 | error("Encryption not supported for file format '%s'", fmt); | |
224 | } | |
225 | } | |
226 | if (flags & BLOCK_FLAG_COMPAT6) { | |
227 | if (set_option_parameter(list, BLOCK_OPT_COMPAT6, "on")) { | |
228 | error("VMDK version 6 not supported for file format '%s'", fmt); | |
229 | } | |
230 | } | |
231 | ||
232 | if (base_filename) { | |
233 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FILE, base_filename)) { | |
234 | error("Backing file not supported for file format '%s'", fmt); | |
235 | } | |
236 | } | |
237 | if (base_fmt) { | |
238 | if (set_option_parameter(list, BLOCK_OPT_BACKING_FMT, base_fmt)) { | |
239 | error("Backing file format not supported for file format '%s'", fmt); | |
240 | } | |
241 | } | |
242 | } | |
243 | ||
ea2384d3 FB |
244 | static int img_create(int argc, char **argv) |
245 | { | |
ec36ba14 | 246 | int c, ret, flags; |
ea2384d3 | 247 | const char *fmt = "raw"; |
9230eaf6 | 248 | const char *base_fmt = NULL; |
ea2384d3 FB |
249 | const char *filename; |
250 | const char *base_filename = NULL; | |
ea2384d3 | 251 | BlockDriver *drv; |
9ea2ea71 KW |
252 | QEMUOptionParameter *param = NULL; |
253 | char *options = NULL; | |
3b46e624 | 254 | |
ec36ba14 | 255 | flags = 0; |
ea2384d3 | 256 | for(;;) { |
9ea2ea71 | 257 | c = getopt(argc, argv, "F:b:f:he6o:"); |
ea2384d3 FB |
258 | if (c == -1) |
259 | break; | |
260 | switch(c) { | |
261 | case 'h': | |
262 | help(); | |
263 | break; | |
9230eaf6 AL |
264 | case 'F': |
265 | base_fmt = optarg; | |
266 | break; | |
ea2384d3 FB |
267 | case 'b': |
268 | base_filename = optarg; | |
269 | break; | |
270 | case 'f': | |
271 | fmt = optarg; | |
272 | break; | |
273 | case 'e': | |
ec36ba14 | 274 | flags |= BLOCK_FLAG_ENCRYPT; |
ea2384d3 | 275 | break; |
d8871c5a | 276 | case '6': |
ec36ba14 | 277 | flags |= BLOCK_FLAG_COMPAT6; |
d8871c5a | 278 | break; |
9ea2ea71 KW |
279 | case 'o': |
280 | options = optarg; | |
281 | break; | |
ea2384d3 FB |
282 | } |
283 | } | |
5fafdf24 | 284 | if (optind >= argc) |
ea2384d3 FB |
285 | help(); |
286 | filename = argv[optind++]; | |
9230eaf6 | 287 | |
9ea2ea71 KW |
288 | /* Find driver and parse its options */ |
289 | drv = bdrv_find_format(fmt); | |
290 | if (!drv) | |
291 | error("Unknown file format '%s'", fmt); | |
9230eaf6 | 292 | |
9ea2ea71 KW |
293 | if (options) { |
294 | param = parse_option_parameters(options, drv->create_options, param); | |
295 | if (param == NULL) { | |
296 | error("Invalid options for file format '%s'.", fmt); | |
297 | } | |
75c23805 | 298 | } else { |
9ea2ea71 KW |
299 | param = parse_option_parameters("", drv->create_options, param); |
300 | } | |
301 | ||
302 | /* Add size to parameters */ | |
303 | if (optind < argc) { | |
304 | set_option_parameter(param, BLOCK_OPT_SIZE, argv[optind++]); | |
305 | } | |
306 | ||
307 | /* Add old-style options to parameters */ | |
efa84d43 | 308 | add_old_style_options(fmt, param, flags, base_filename, base_fmt); |
9ea2ea71 KW |
309 | |
310 | // The size for the image must always be specified, with one exception: | |
311 | // If we are using a backing file, we can obtain the size from there | |
312 | if (get_option_parameter(param, BLOCK_OPT_SIZE)->value.n == 0) { | |
313 | ||
314 | QEMUOptionParameter *backing_file = | |
315 | get_option_parameter(param, BLOCK_OPT_BACKING_FILE); | |
316 | QEMUOptionParameter *backing_fmt = | |
317 | get_option_parameter(param, BLOCK_OPT_BACKING_FMT); | |
318 | ||
319 | if (backing_file && backing_file->value.s) { | |
320 | BlockDriverState *bs; | |
321 | uint64_t size; | |
322 | const char *fmt = NULL; | |
323 | char buf[32]; | |
324 | ||
325 | if (backing_fmt && backing_fmt->value.s) { | |
326 | if (bdrv_find_format(backing_fmt->value.s)) { | |
327 | fmt = backing_fmt->value.s; | |
328 | } else { | |
329 | error("Unknown backing file format '%s'", | |
330 | backing_fmt->value.s); | |
331 | } | |
332 | } | |
333 | ||
334 | bs = bdrv_new_open(backing_file->value.s, fmt); | |
335 | bdrv_get_geometry(bs, &size); | |
336 | size *= 512; | |
337 | bdrv_delete(bs); | |
338 | ||
339 | snprintf(buf, sizeof(buf), "%" PRId64, size); | |
340 | set_option_parameter(param, BLOCK_OPT_SIZE, buf); | |
341 | } else { | |
342 | error("Image creation needs a size parameter"); | |
343 | } | |
75c23805 | 344 | } |
9ea2ea71 KW |
345 | |
346 | printf("Formatting '%s', fmt=%s ", filename, fmt); | |
347 | print_option_parameters(param); | |
348 | puts(""); | |
349 | ||
350 | ret = bdrv_create(drv, filename, param); | |
351 | free_option_parameters(param); | |
352 | ||
ea2384d3 FB |
353 | if (ret < 0) { |
354 | if (ret == -ENOTSUP) { | |
3c56521b | 355 | error("Formatting or formatting option not supported for file format '%s'", fmt); |
6e9ea0c0 AJ |
356 | } else if (ret == -EFBIG) { |
357 | error("The image size is too large for file format '%s'", fmt); | |
ea2384d3 FB |
358 | } else { |
359 | error("Error while formatting"); | |
360 | } | |
361 | } | |
362 | return 0; | |
363 | } | |
364 | ||
1585969c AL |
365 | static int img_check(int argc, char **argv) |
366 | { | |
367 | int c, ret; | |
368 | const char *filename, *fmt; | |
369 | BlockDriver *drv; | |
370 | BlockDriverState *bs; | |
371 | ||
372 | fmt = NULL; | |
373 | for(;;) { | |
374 | c = getopt(argc, argv, "f:h"); | |
375 | if (c == -1) | |
376 | break; | |
377 | switch(c) { | |
378 | case 'h': | |
379 | help(); | |
380 | break; | |
381 | case 'f': | |
382 | fmt = optarg; | |
383 | break; | |
384 | } | |
385 | } | |
386 | if (optind >= argc) | |
387 | help(); | |
388 | filename = argv[optind++]; | |
389 | ||
390 | bs = bdrv_new(""); | |
391 | if (!bs) | |
392 | error("Not enough memory"); | |
393 | if (fmt) { | |
394 | drv = bdrv_find_format(fmt); | |
395 | if (!drv) | |
396 | error("Unknown file format '%s'", fmt); | |
397 | } else { | |
398 | drv = NULL; | |
399 | } | |
400 | if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { | |
401 | error("Could not open '%s'", filename); | |
402 | } | |
403 | ret = bdrv_check(bs); | |
404 | switch(ret) { | |
405 | case 0: | |
406 | printf("No errors were found on the image.\n"); | |
407 | break; | |
408 | case -ENOTSUP: | |
409 | error("This image format does not support checks"); | |
410 | break; | |
411 | default: | |
412 | if (ret < 0) { | |
413 | error("An error occurred during the check"); | |
414 | } else { | |
415 | printf("%d errors were found on the image.\n", ret); | |
416 | } | |
417 | break; | |
418 | } | |
419 | ||
420 | bdrv_delete(bs); | |
421 | return 0; | |
422 | } | |
423 | ||
ea2384d3 FB |
424 | static int img_commit(int argc, char **argv) |
425 | { | |
426 | int c, ret; | |
427 | const char *filename, *fmt; | |
428 | BlockDriver *drv; | |
429 | BlockDriverState *bs; | |
430 | ||
431 | fmt = NULL; | |
432 | for(;;) { | |
433 | c = getopt(argc, argv, "f:h"); | |
434 | if (c == -1) | |
435 | break; | |
436 | switch(c) { | |
437 | case 'h': | |
438 | help(); | |
439 | break; | |
440 | case 'f': | |
441 | fmt = optarg; | |
442 | break; | |
443 | } | |
444 | } | |
5fafdf24 | 445 | if (optind >= argc) |
ea2384d3 FB |
446 | help(); |
447 | filename = argv[optind++]; | |
448 | ||
449 | bs = bdrv_new(""); | |
450 | if (!bs) | |
451 | error("Not enough memory"); | |
452 | if (fmt) { | |
453 | drv = bdrv_find_format(fmt); | |
454 | if (!drv) | |
455 | error("Unknown file format '%s'", fmt); | |
456 | } else { | |
457 | drv = NULL; | |
458 | } | |
137519ce | 459 | if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { |
ea2384d3 FB |
460 | error("Could not open '%s'", filename); |
461 | } | |
462 | ret = bdrv_commit(bs); | |
463 | switch(ret) { | |
464 | case 0: | |
465 | printf("Image committed.\n"); | |
466 | break; | |
467 | case -ENOENT: | |
468 | error("No disk inserted"); | |
469 | break; | |
470 | case -EACCES: | |
471 | error("Image is read-only"); | |
472 | break; | |
473 | case -ENOTSUP: | |
474 | error("Image is already committed"); | |
475 | break; | |
476 | default: | |
477 | error("Error while committing image"); | |
478 | break; | |
479 | } | |
480 | ||
481 | bdrv_delete(bs); | |
482 | return 0; | |
483 | } | |
484 | ||
485 | static int is_not_zero(const uint8_t *sector, int len) | |
486 | { | |
487 | int i; | |
488 | len >>= 2; | |
489 | for(i = 0;i < len; i++) { | |
490 | if (((uint32_t *)sector)[i] != 0) | |
491 | return 1; | |
492 | } | |
493 | return 0; | |
494 | } | |
495 | ||
f58c7b35 TS |
496 | /* |
497 | * Returns true iff the first sector pointed to by 'buf' contains at least | |
498 | * a non-NUL byte. | |
499 | * | |
500 | * 'pnum' is set to the number of sectors (including and immediately following | |
501 | * the first one) that are known to be in the same allocated/unallocated state. | |
502 | */ | |
ea2384d3 FB |
503 | static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
504 | { | |
505 | int v, i; | |
506 | ||
507 | if (n <= 0) { | |
508 | *pnum = 0; | |
509 | return 0; | |
510 | } | |
511 | v = is_not_zero(buf, 512); | |
512 | for(i = 1; i < n; i++) { | |
513 | buf += 512; | |
514 | if (v != is_not_zero(buf, 512)) | |
515 | break; | |
516 | } | |
517 | *pnum = i; | |
518 | return v; | |
519 | } | |
520 | ||
ea2384d3 FB |
521 | #define IO_BUF_SIZE 65536 |
522 | ||
523 | static int img_convert(int argc, char **argv) | |
524 | { | |
926c2d23 | 525 | int c, ret, n, n1, bs_n, bs_i, flags, cluster_size, cluster_sectors; |
f58c7b35 | 526 | const char *fmt, *out_fmt, *out_baseimg, *out_filename; |
ea2384d3 | 527 | BlockDriver *drv; |
926c2d23 | 528 | BlockDriverState **bs, *out_bs; |
96b8f136 TS |
529 | int64_t total_sectors, nb_sectors, sector_num, bs_offset; |
530 | uint64_t bs_sectors; | |
ea2384d3 FB |
531 | uint8_t buf[IO_BUF_SIZE]; |
532 | const uint8_t *buf1; | |
faea38e7 | 533 | BlockDriverInfo bdi; |
efa84d43 KW |
534 | QEMUOptionParameter *param = NULL; |
535 | char *options = NULL; | |
ea2384d3 FB |
536 | |
537 | fmt = NULL; | |
538 | out_fmt = "raw"; | |
f58c7b35 | 539 | out_baseimg = NULL; |
ec36ba14 | 540 | flags = 0; |
ea2384d3 | 541 | for(;;) { |
efa84d43 | 542 | c = getopt(argc, argv, "f:O:B:hce6o:"); |
ea2384d3 FB |
543 | if (c == -1) |
544 | break; | |
545 | switch(c) { | |
546 | case 'h': | |
547 | help(); | |
548 | break; | |
549 | case 'f': | |
550 | fmt = optarg; | |
551 | break; | |
552 | case 'O': | |
553 | out_fmt = optarg; | |
554 | break; | |
f58c7b35 TS |
555 | case 'B': |
556 | out_baseimg = optarg; | |
557 | break; | |
ea2384d3 | 558 | case 'c': |
ec36ba14 | 559 | flags |= BLOCK_FLAG_COMPRESS; |
ea2384d3 FB |
560 | break; |
561 | case 'e': | |
ec36ba14 TS |
562 | flags |= BLOCK_FLAG_ENCRYPT; |
563 | break; | |
564 | case '6': | |
565 | flags |= BLOCK_FLAG_COMPAT6; | |
ea2384d3 | 566 | break; |
efa84d43 KW |
567 | case 'o': |
568 | options = optarg; | |
569 | break; | |
ea2384d3 FB |
570 | } |
571 | } | |
3b46e624 | 572 | |
926c2d23 AZ |
573 | bs_n = argc - optind - 1; |
574 | if (bs_n < 1) help(); | |
575 | ||
576 | out_filename = argv[argc - 1]; | |
f58c7b35 TS |
577 | |
578 | if (bs_n > 1 && out_baseimg) | |
579 | error("-B makes no sense when concatenating multiple input images"); | |
926c2d23 AZ |
580 | |
581 | bs = calloc(bs_n, sizeof(BlockDriverState *)); | |
582 | if (!bs) | |
583 | error("Out of memory"); | |
584 | ||
585 | total_sectors = 0; | |
586 | for (bs_i = 0; bs_i < bs_n; bs_i++) { | |
587 | bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt); | |
588 | if (!bs[bs_i]) | |
589 | error("Could not open '%s'", argv[optind + bs_i]); | |
590 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
591 | total_sectors += bs_sectors; | |
592 | } | |
ea2384d3 | 593 | |
efa84d43 | 594 | /* Find driver and parse its options */ |
ea2384d3 FB |
595 | drv = bdrv_find_format(out_fmt); |
596 | if (!drv) | |
d34dda5e | 597 | error("Unknown file format '%s'", out_fmt); |
efa84d43 KW |
598 | |
599 | if (options) { | |
600 | param = parse_option_parameters(options, drv->create_options, param); | |
601 | if (param == NULL) { | |
602 | error("Invalid options for file format '%s'.", out_fmt); | |
603 | } | |
604 | } else { | |
605 | param = parse_option_parameters("", drv->create_options, param); | |
606 | } | |
607 | ||
608 | set_option_parameter_int(param, BLOCK_OPT_SIZE, total_sectors * 512); | |
609 | add_old_style_options(out_fmt, param, flags, out_baseimg, NULL); | |
610 | ||
611 | /* Check if compression is supported */ | |
612 | if (flags & BLOCK_FLAG_COMPRESS) { | |
613 | QEMUOptionParameter *encryption = | |
614 | get_option_parameter(param, BLOCK_OPT_ENCRYPT); | |
615 | ||
616 | if (!drv->bdrv_write_compressed) { | |
617 | error("Compression not supported for this file format"); | |
618 | } | |
619 | ||
620 | if (encryption && encryption->value.n) { | |
621 | error("Compression and encryption not supported at the same time"); | |
622 | } | |
623 | } | |
624 | ||
625 | /* Create the new image */ | |
626 | ret = bdrv_create(drv, out_filename, param); | |
627 | free_option_parameters(param); | |
628 | ||
ea2384d3 FB |
629 | if (ret < 0) { |
630 | if (ret == -ENOTSUP) { | |
93c65b47 | 631 | error("Formatting not supported for file format '%s'", out_fmt); |
6e9ea0c0 AJ |
632 | } else if (ret == -EFBIG) { |
633 | error("The image size is too large for file format '%s'", out_fmt); | |
ea2384d3 FB |
634 | } else { |
635 | error("Error while formatting '%s'", out_filename); | |
636 | } | |
637 | } | |
3b46e624 | 638 | |
ea2384d3 FB |
639 | out_bs = bdrv_new_open(out_filename, out_fmt); |
640 | ||
926c2d23 AZ |
641 | bs_i = 0; |
642 | bs_offset = 0; | |
643 | bdrv_get_geometry(bs[0], &bs_sectors); | |
644 | ||
645 | if (flags & BLOCK_FLAG_COMPRESS) { | |
faea38e7 FB |
646 | if (bdrv_get_info(out_bs, &bdi) < 0) |
647 | error("could not get block driver info"); | |
648 | cluster_size = bdi.cluster_size; | |
ea2384d3 FB |
649 | if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE) |
650 | error("invalid cluster size"); | |
651 | cluster_sectors = cluster_size >> 9; | |
652 | sector_num = 0; | |
653 | for(;;) { | |
926c2d23 AZ |
654 | int64_t bs_num; |
655 | int remainder; | |
656 | uint8_t *buf2; | |
657 | ||
ea2384d3 FB |
658 | nb_sectors = total_sectors - sector_num; |
659 | if (nb_sectors <= 0) | |
660 | break; | |
661 | if (nb_sectors >= cluster_sectors) | |
662 | n = cluster_sectors; | |
663 | else | |
664 | n = nb_sectors; | |
926c2d23 AZ |
665 | |
666 | bs_num = sector_num - bs_offset; | |
667 | assert (bs_num >= 0); | |
668 | remainder = n; | |
669 | buf2 = buf; | |
670 | while (remainder > 0) { | |
671 | int nlow; | |
672 | while (bs_num == bs_sectors) { | |
673 | bs_i++; | |
674 | assert (bs_i < bs_n); | |
675 | bs_offset += bs_sectors; | |
676 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
677 | bs_num = 0; | |
678 | /* printf("changing part: sector_num=%lld, " | |
679 | "bs_i=%d, bs_offset=%lld, bs_sectors=%lld\n", | |
680 | sector_num, bs_i, bs_offset, bs_sectors); */ | |
681 | } | |
682 | assert (bs_num < bs_sectors); | |
683 | ||
684 | nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; | |
685 | ||
686 | if (bdrv_read(bs[bs_i], bs_num, buf2, nlow) < 0) | |
687 | error("error while reading"); | |
688 | ||
689 | buf2 += nlow * 512; | |
690 | bs_num += nlow; | |
691 | ||
692 | remainder -= nlow; | |
693 | } | |
694 | assert (remainder == 0); | |
695 | ||
ea2384d3 FB |
696 | if (n < cluster_sectors) |
697 | memset(buf + n * 512, 0, cluster_size - n * 512); | |
698 | if (is_not_zero(buf, cluster_size)) { | |
5fafdf24 | 699 | if (bdrv_write_compressed(out_bs, sector_num, buf, |
faea38e7 | 700 | cluster_sectors) != 0) |
ec3757de FB |
701 | error("error while compressing sector %" PRId64, |
702 | sector_num); | |
ea2384d3 FB |
703 | } |
704 | sector_num += n; | |
705 | } | |
faea38e7 FB |
706 | /* signal EOF to align */ |
707 | bdrv_write_compressed(out_bs, 0, NULL, 0); | |
ea2384d3 | 708 | } else { |
f58c7b35 | 709 | sector_num = 0; // total number of sectors converted so far |
ea2384d3 FB |
710 | for(;;) { |
711 | nb_sectors = total_sectors - sector_num; | |
712 | if (nb_sectors <= 0) | |
713 | break; | |
714 | if (nb_sectors >= (IO_BUF_SIZE / 512)) | |
715 | n = (IO_BUF_SIZE / 512); | |
716 | else | |
717 | n = nb_sectors; | |
926c2d23 AZ |
718 | |
719 | while (sector_num - bs_offset >= bs_sectors) { | |
720 | bs_i ++; | |
721 | assert (bs_i < bs_n); | |
722 | bs_offset += bs_sectors; | |
723 | bdrv_get_geometry(bs[bs_i], &bs_sectors); | |
724 | /* printf("changing part: sector_num=%lld, bs_i=%d, " | |
725 | "bs_offset=%lld, bs_sectors=%lld\n", | |
726 | sector_num, bs_i, bs_offset, bs_sectors); */ | |
727 | } | |
728 | ||
729 | if (n > bs_offset + bs_sectors - sector_num) | |
730 | n = bs_offset + bs_sectors - sector_num; | |
731 | ||
5efa9d5a | 732 | if (strcmp(drv->format_name, "host_device")) { |
93c65b47 AL |
733 | if (!bdrv_is_allocated(bs[bs_i], sector_num - bs_offset, |
734 | n, &n1)) { | |
735 | sector_num += n1; | |
736 | continue; | |
737 | } | |
738 | /* The next 'n1' sectors are allocated in the input image. Copy | |
739 | only those as they may be followed by unallocated sectors. */ | |
740 | n = n1; | |
741 | } else { | |
742 | n1 = n; | |
f58c7b35 TS |
743 | } |
744 | ||
926c2d23 | 745 | if (bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n) < 0) |
ea2384d3 FB |
746 | error("error while reading"); |
747 | /* NOTE: at the same time we convert, we do not write zero | |
748 | sectors to have a chance to compress the image. Ideally, we | |
749 | should add a specific call to have the info to go faster */ | |
750 | buf1 = buf; | |
751 | while (n > 0) { | |
f58c7b35 TS |
752 | /* If the output image is being created as a copy on write image, |
753 | copy all sectors even the ones containing only NUL bytes, | |
93c65b47 AL |
754 | because they may differ from the sectors in the base image. |
755 | ||
756 | If the output is to a host device, we also write out | |
757 | sectors that are entirely 0, since whatever data was | |
758 | already there is garbage, not 0s. */ | |
5efa9d5a | 759 | if (strcmp(drv->format_name, "host_device") == 0 || out_baseimg || |
93c65b47 | 760 | is_allocated_sectors(buf1, n, &n1)) { |
5fafdf24 | 761 | if (bdrv_write(out_bs, sector_num, buf1, n1) < 0) |
ea2384d3 FB |
762 | error("error while writing"); |
763 | } | |
764 | sector_num += n1; | |
765 | n -= n1; | |
766 | buf1 += n1 * 512; | |
767 | } | |
768 | } | |
769 | } | |
770 | bdrv_delete(out_bs); | |
926c2d23 AZ |
771 | for (bs_i = 0; bs_i < bs_n; bs_i++) |
772 | bdrv_delete(bs[bs_i]); | |
773 | free(bs); | |
ea2384d3 FB |
774 | return 0; |
775 | } | |
776 | ||
57d1a2b6 FB |
777 | #ifdef _WIN32 |
778 | static int64_t get_allocated_file_size(const char *filename) | |
779 | { | |
e8445331 FB |
780 | typedef DWORD (WINAPI * get_compressed_t)(const char *filename, DWORD *high); |
781 | get_compressed_t get_compressed; | |
57d1a2b6 | 782 | struct _stati64 st; |
e8445331 FB |
783 | |
784 | /* WinNT support GetCompressedFileSize to determine allocate size */ | |
785 | get_compressed = (get_compressed_t) GetProcAddress(GetModuleHandle("kernel32"), "GetCompressedFileSizeA"); | |
786 | if (get_compressed) { | |
787 | DWORD high, low; | |
788 | low = get_compressed(filename, &high); | |
789 | if (low != 0xFFFFFFFFlu || GetLastError() == NO_ERROR) | |
790 | return (((int64_t) high) << 32) + low; | |
791 | } | |
792 | ||
5fafdf24 | 793 | if (_stati64(filename, &st) < 0) |
57d1a2b6 FB |
794 | return -1; |
795 | return st.st_size; | |
796 | } | |
797 | #else | |
798 | static int64_t get_allocated_file_size(const char *filename) | |
799 | { | |
800 | struct stat st; | |
5fafdf24 | 801 | if (stat(filename, &st) < 0) |
57d1a2b6 FB |
802 | return -1; |
803 | return (int64_t)st.st_blocks * 512; | |
804 | } | |
805 | #endif | |
806 | ||
faea38e7 FB |
807 | static void dump_snapshots(BlockDriverState *bs) |
808 | { | |
809 | QEMUSnapshotInfo *sn_tab, *sn; | |
810 | int nb_sns, i; | |
811 | char buf[256]; | |
812 | ||
813 | nb_sns = bdrv_snapshot_list(bs, &sn_tab); | |
814 | if (nb_sns <= 0) | |
815 | return; | |
816 | printf("Snapshot list:\n"); | |
817 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); | |
818 | for(i = 0; i < nb_sns; i++) { | |
819 | sn = &sn_tab[i]; | |
820 | printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); | |
821 | } | |
822 | qemu_free(sn_tab); | |
823 | } | |
824 | ||
ea2384d3 FB |
825 | static int img_info(int argc, char **argv) |
826 | { | |
827 | int c; | |
828 | const char *filename, *fmt; | |
829 | BlockDriver *drv; | |
830 | BlockDriverState *bs; | |
831 | char fmt_name[128], size_buf[128], dsize_buf[128]; | |
96b8f136 TS |
832 | uint64_t total_sectors; |
833 | int64_t allocated_size; | |
93b6b2a3 FB |
834 | char backing_filename[1024]; |
835 | char backing_filename2[1024]; | |
faea38e7 | 836 | BlockDriverInfo bdi; |
ea2384d3 FB |
837 | |
838 | fmt = NULL; | |
839 | for(;;) { | |
840 | c = getopt(argc, argv, "f:h"); | |
841 | if (c == -1) | |
842 | break; | |
843 | switch(c) { | |
844 | case 'h': | |
845 | help(); | |
846 | break; | |
847 | case 'f': | |
848 | fmt = optarg; | |
849 | break; | |
850 | } | |
851 | } | |
5fafdf24 | 852 | if (optind >= argc) |
ea2384d3 FB |
853 | help(); |
854 | filename = argv[optind++]; | |
855 | ||
856 | bs = bdrv_new(""); | |
857 | if (!bs) | |
858 | error("Not enough memory"); | |
859 | if (fmt) { | |
860 | drv = bdrv_find_format(fmt); | |
861 | if (!drv) | |
862 | error("Unknown file format '%s'", fmt); | |
863 | } else { | |
864 | drv = NULL; | |
865 | } | |
137519ce | 866 | if (bdrv_open2(bs, filename, BRDV_O_FLAGS, drv) < 0) { |
ea2384d3 FB |
867 | error("Could not open '%s'", filename); |
868 | } | |
869 | bdrv_get_format(bs, fmt_name, sizeof(fmt_name)); | |
870 | bdrv_get_geometry(bs, &total_sectors); | |
871 | get_human_readable_size(size_buf, sizeof(size_buf), total_sectors * 512); | |
57d1a2b6 FB |
872 | allocated_size = get_allocated_file_size(filename); |
873 | if (allocated_size < 0) | |
a10ea30b | 874 | snprintf(dsize_buf, sizeof(dsize_buf), "unavailable"); |
de167e41 | 875 | else |
5fafdf24 | 876 | get_human_readable_size(dsize_buf, sizeof(dsize_buf), |
de167e41 | 877 | allocated_size); |
ea2384d3 FB |
878 | printf("image: %s\n" |
879 | "file format: %s\n" | |
ec3757de | 880 | "virtual size: %s (%" PRId64 " bytes)\n" |
ea2384d3 | 881 | "disk size: %s\n", |
5fafdf24 | 882 | filename, fmt_name, size_buf, |
ec3757de | 883 | (total_sectors * 512), |
ea2384d3 FB |
884 | dsize_buf); |
885 | if (bdrv_is_encrypted(bs)) | |
886 | printf("encrypted: yes\n"); | |
faea38e7 | 887 | if (bdrv_get_info(bs, &bdi) >= 0) { |
5fafdf24 | 888 | if (bdi.cluster_size != 0) |
faea38e7 FB |
889 | printf("cluster_size: %d\n", bdi.cluster_size); |
890 | } | |
93b6b2a3 | 891 | bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename)); |
faea38e7 | 892 | if (backing_filename[0] != '\0') { |
93b6b2a3 FB |
893 | path_combine(backing_filename2, sizeof(backing_filename2), |
894 | filename, backing_filename); | |
5fafdf24 | 895 | printf("backing file: %s (actual path: %s)\n", |
93b6b2a3 FB |
896 | backing_filename, |
897 | backing_filename2); | |
faea38e7 FB |
898 | } |
899 | dump_snapshots(bs); | |
ea2384d3 FB |
900 | bdrv_delete(bs); |
901 | return 0; | |
902 | } | |
903 | ||
f7b4a940 AL |
904 | #define SNAPSHOT_LIST 1 |
905 | #define SNAPSHOT_CREATE 2 | |
906 | #define SNAPSHOT_APPLY 3 | |
907 | #define SNAPSHOT_DELETE 4 | |
908 | ||
909 | static void img_snapshot(int argc, char **argv) | |
910 | { | |
911 | BlockDriverState *bs; | |
912 | QEMUSnapshotInfo sn; | |
913 | char *filename, *snapshot_name = NULL; | |
40a4539e | 914 | int c, ret; |
f7b4a940 AL |
915 | int action = 0; |
916 | qemu_timeval tv; | |
917 | ||
918 | /* Parse commandline parameters */ | |
919 | for(;;) { | |
920 | c = getopt(argc, argv, "la:c:d:h"); | |
921 | if (c == -1) | |
922 | break; | |
923 | switch(c) { | |
924 | case 'h': | |
925 | help(); | |
926 | return; | |
927 | case 'l': | |
928 | if (action) { | |
929 | help(); | |
930 | return; | |
931 | } | |
932 | action = SNAPSHOT_LIST; | |
933 | break; | |
934 | case 'a': | |
935 | if (action) { | |
936 | help(); | |
937 | return; | |
938 | } | |
939 | action = SNAPSHOT_APPLY; | |
940 | snapshot_name = optarg; | |
941 | break; | |
942 | case 'c': | |
943 | if (action) { | |
944 | help(); | |
945 | return; | |
946 | } | |
947 | action = SNAPSHOT_CREATE; | |
948 | snapshot_name = optarg; | |
949 | break; | |
950 | case 'd': | |
951 | if (action) { | |
952 | help(); | |
953 | return; | |
954 | } | |
955 | action = SNAPSHOT_DELETE; | |
956 | snapshot_name = optarg; | |
957 | break; | |
958 | } | |
959 | } | |
960 | ||
961 | if (optind >= argc) | |
962 | help(); | |
963 | filename = argv[optind++]; | |
964 | ||
965 | /* Open the image */ | |
966 | bs = bdrv_new(""); | |
967 | if (!bs) | |
968 | error("Not enough memory"); | |
969 | ||
970 | if (bdrv_open2(bs, filename, 0, NULL) < 0) { | |
971 | error("Could not open '%s'", filename); | |
972 | } | |
973 | ||
974 | /* Perform the requested action */ | |
975 | switch(action) { | |
976 | case SNAPSHOT_LIST: | |
977 | dump_snapshots(bs); | |
978 | break; | |
979 | ||
980 | case SNAPSHOT_CREATE: | |
981 | memset(&sn, 0, sizeof(sn)); | |
982 | pstrcpy(sn.name, sizeof(sn.name), snapshot_name); | |
983 | ||
984 | qemu_gettimeofday(&tv); | |
985 | sn.date_sec = tv.tv_sec; | |
986 | sn.date_nsec = tv.tv_usec * 1000; | |
987 | ||
988 | ret = bdrv_snapshot_create(bs, &sn); | |
989 | if (ret) | |
990 | error("Could not create snapshot '%s': %d (%s)", | |
991 | snapshot_name, ret, strerror(-ret)); | |
992 | break; | |
993 | ||
994 | case SNAPSHOT_APPLY: | |
995 | ret = bdrv_snapshot_goto(bs, snapshot_name); | |
996 | if (ret) | |
997 | error("Could not apply snapshot '%s': %d (%s)", | |
998 | snapshot_name, ret, strerror(-ret)); | |
999 | break; | |
1000 | ||
1001 | case SNAPSHOT_DELETE: | |
1002 | ret = bdrv_snapshot_delete(bs, snapshot_name); | |
1003 | if (ret) | |
1004 | error("Could not delete snapshot '%s': %d (%s)", | |
1005 | snapshot_name, ret, strerror(-ret)); | |
1006 | break; | |
1007 | } | |
1008 | ||
1009 | /* Cleanup */ | |
1010 | bdrv_delete(bs); | |
1011 | } | |
1012 | ||
ea2384d3 FB |
1013 | int main(int argc, char **argv) |
1014 | { | |
1015 | const char *cmd; | |
1016 | ||
1017 | bdrv_init(); | |
1018 | if (argc < 2) | |
1019 | help(); | |
1020 | cmd = argv[1]; | |
8f9b157e | 1021 | argc--; argv++; |
ea2384d3 FB |
1022 | if (!strcmp(cmd, "create")) { |
1023 | img_create(argc, argv); | |
1585969c AL |
1024 | } else if (!strcmp(cmd, "check")) { |
1025 | img_check(argc, argv); | |
ea2384d3 FB |
1026 | } else if (!strcmp(cmd, "commit")) { |
1027 | img_commit(argc, argv); | |
1028 | } else if (!strcmp(cmd, "convert")) { | |
1029 | img_convert(argc, argv); | |
1030 | } else if (!strcmp(cmd, "info")) { | |
1031 | img_info(argc, argv); | |
f7b4a940 AL |
1032 | } else if (!strcmp(cmd, "snapshot")) { |
1033 | img_snapshot(argc, argv); | |
ea2384d3 FB |
1034 | } else { |
1035 | help(); | |
1036 | } | |
1037 | return 0; | |
1038 | } |