root / qemu-img.c @ 926c2d23
History | View | Annotate | Download (20.5 kB)
1 |
/*
|
---|---|
2 |
* QEMU disk image utility
|
3 |
*
|
4 |
* Copyright (c) 2003-2007 Fabrice Bellard
|
5 |
*
|
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 |
*/
|
24 |
#include "vl.h" |
25 |
#include "block_int.h" |
26 |
#include <assert.h> |
27 |
|
28 |
#ifdef _WIN32
|
29 |
#include <windows.h> |
30 |
#endif
|
31 |
|
32 |
void *get_mmap_addr(unsigned long size) |
33 |
{ |
34 |
return NULL; |
35 |
} |
36 |
|
37 |
void qemu_free(void *ptr) |
38 |
{ |
39 |
free(ptr); |
40 |
} |
41 |
|
42 |
void *qemu_malloc(size_t size)
|
43 |
{ |
44 |
return malloc(size);
|
45 |
} |
46 |
|
47 |
void *qemu_mallocz(size_t size)
|
48 |
{ |
49 |
void *ptr;
|
50 |
ptr = qemu_malloc(size); |
51 |
if (!ptr)
|
52 |
return NULL; |
53 |
memset(ptr, 0, size);
|
54 |
return ptr;
|
55 |
} |
56 |
|
57 |
char *qemu_strdup(const char *str) |
58 |
{ |
59 |
char *ptr;
|
60 |
ptr = qemu_malloc(strlen(str) + 1);
|
61 |
if (!ptr)
|
62 |
return NULL; |
63 |
strcpy(ptr, str); |
64 |
return ptr;
|
65 |
} |
66 |
|
67 |
void term_printf(const char *fmt, ...) |
68 |
{ |
69 |
va_list ap; |
70 |
va_start(ap, fmt); |
71 |
vprintf(fmt, ap); |
72 |
va_end(ap); |
73 |
} |
74 |
|
75 |
void term_print_filename(const char *filename) |
76 |
{ |
77 |
term_printf(filename); |
78 |
} |
79 |
|
80 |
void __attribute__((noreturn)) error(const char *fmt, ...) |
81 |
{ |
82 |
va_list ap; |
83 |
va_start(ap, fmt); |
84 |
fprintf(stderr, "qemu-img: ");
|
85 |
vfprintf(stderr, fmt, ap); |
86 |
fprintf(stderr, "\n");
|
87 |
exit(1);
|
88 |
va_end(ap); |
89 |
} |
90 |
|
91 |
static void format_print(void *opaque, const char *name) |
92 |
{ |
93 |
printf(" %s", name);
|
94 |
} |
95 |
|
96 |
void help(void) |
97 |
{ |
98 |
printf("qemu-img version " QEMU_VERSION ", Copyright (c) 2004-2007 Fabrice Bellard\n" |
99 |
"usage: qemu-img command [command options]\n"
|
100 |
"QEMU disk image utility\n"
|
101 |
"\n"
|
102 |
"Command syntax:\n"
|
103 |
" create [-e] [-6] [-b base_image] [-f fmt] filename [size]\n"
|
104 |
" commit [-f fmt] filename\n"
|
105 |
" convert [-c] [-e] [-6] [-f fmt] filename [filename2 [...]] [-O output_fmt] output_filename\n"
|
106 |
" info [-f fmt] filename\n"
|
107 |
"\n"
|
108 |
"Command parameters:\n"
|
109 |
" 'filename' is a disk image filename\n"
|
110 |
" 'base_image' is the read-only disk image which is used as base for a copy on\n"
|
111 |
" write image; the copy on write image only stores the modified data\n"
|
112 |
" 'fmt' is the disk image format. It is guessed automatically in most cases\n"
|
113 |
" 'size' is the disk image size in kilobytes. Optional suffixes 'M' (megabyte)\n"
|
114 |
" and 'G' (gigabyte) are supported\n"
|
115 |
" 'output_filename' is the destination disk image filename\n"
|
116 |
" 'output_fmt' is the destination format\n"
|
117 |
" '-c' indicates that target image must be compressed (qcow format only)\n"
|
118 |
" '-e' indicates that the target image must be encrypted (qcow format only)\n"
|
119 |
" '-6' indicates that the target image must use compatibility level 6 (vmdk format only)\n"
|
120 |
); |
121 |
printf("\nSupported format:");
|
122 |
bdrv_iterate_format(format_print, NULL);
|
123 |
printf("\n");
|
124 |
exit(1);
|
125 |
} |
126 |
|
127 |
#if defined(WIN32)
|
128 |
/* XXX: put correct support for win32 */
|
129 |
static int read_password(char *buf, int buf_size) |
130 |
{ |
131 |
int c, i;
|
132 |
printf("Password: ");
|
133 |
fflush(stdout); |
134 |
i = 0;
|
135 |
for(;;) {
|
136 |
c = getchar(); |
137 |
if (c == '\n') |
138 |
break;
|
139 |
if (i < (buf_size - 1)) |
140 |
buf[i++] = c; |
141 |
} |
142 |
buf[i] = '\0';
|
143 |
return 0; |
144 |
} |
145 |
|
146 |
#else
|
147 |
|
148 |
#include <termios.h> |
149 |
|
150 |
static struct termios oldtty; |
151 |
|
152 |
static void term_exit(void) |
153 |
{ |
154 |
tcsetattr (0, TCSANOW, &oldtty);
|
155 |
} |
156 |
|
157 |
static void term_init(void) |
158 |
{ |
159 |
struct termios tty;
|
160 |
|
161 |
tcgetattr (0, &tty);
|
162 |
oldtty = tty; |
163 |
|
164 |
tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP |
165 |
|INLCR|IGNCR|ICRNL|IXON); |
166 |
tty.c_oflag |= OPOST; |
167 |
tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); |
168 |
tty.c_cflag &= ~(CSIZE|PARENB); |
169 |
tty.c_cflag |= CS8; |
170 |
tty.c_cc[VMIN] = 1;
|
171 |
tty.c_cc[VTIME] = 0;
|
172 |
|
173 |
tcsetattr (0, TCSANOW, &tty);
|
174 |
|
175 |
atexit(term_exit); |
176 |
} |
177 |
|
178 |
int read_password(char *buf, int buf_size) |
179 |
{ |
180 |
uint8_t ch; |
181 |
int i, ret;
|
182 |
|
183 |
printf("password: ");
|
184 |
fflush(stdout); |
185 |
term_init(); |
186 |
i = 0;
|
187 |
for(;;) {
|
188 |
ret = read(0, &ch, 1); |
189 |
if (ret == -1) { |
190 |
if (errno == EAGAIN || errno == EINTR) {
|
191 |
continue;
|
192 |
} else {
|
193 |
ret = -1;
|
194 |
break;
|
195 |
} |
196 |
} else if (ret == 0) { |
197 |
ret = -1;
|
198 |
break;
|
199 |
} else {
|
200 |
if (ch == '\r') { |
201 |
ret = 0;
|
202 |
break;
|
203 |
} |
204 |
if (i < (buf_size - 1)) |
205 |
buf[i++] = ch; |
206 |
} |
207 |
} |
208 |
term_exit(); |
209 |
buf[i] = '\0';
|
210 |
printf("\n");
|
211 |
return ret;
|
212 |
} |
213 |
#endif
|
214 |
|
215 |
static BlockDriverState *bdrv_new_open(const char *filename, |
216 |
const char *fmt) |
217 |
{ |
218 |
BlockDriverState *bs; |
219 |
BlockDriver *drv; |
220 |
char password[256]; |
221 |
|
222 |
bs = bdrv_new("");
|
223 |
if (!bs)
|
224 |
error("Not enough memory");
|
225 |
if (fmt) {
|
226 |
drv = bdrv_find_format(fmt); |
227 |
if (!drv)
|
228 |
error("Unknown file format '%s'", fmt);
|
229 |
} else {
|
230 |
drv = NULL;
|
231 |
} |
232 |
if (bdrv_open2(bs, filename, 0, drv) < 0) { |
233 |
error("Could not open '%s'", filename);
|
234 |
} |
235 |
if (bdrv_is_encrypted(bs)) {
|
236 |
printf("Disk image '%s' is encrypted.\n", filename);
|
237 |
if (read_password(password, sizeof(password)) < 0) |
238 |
error("No password given");
|
239 |
if (bdrv_set_key(bs, password) < 0) |
240 |
error("invalid password");
|
241 |
} |
242 |
return bs;
|
243 |
} |
244 |
|
245 |
static int img_create(int argc, char **argv) |
246 |
{ |
247 |
int c, ret, flags;
|
248 |
const char *fmt = "raw"; |
249 |
const char *filename; |
250 |
const char *base_filename = NULL; |
251 |
int64_t size; |
252 |
const char *p; |
253 |
BlockDriver *drv; |
254 |
|
255 |
flags = 0;
|
256 |
for(;;) {
|
257 |
c = getopt(argc, argv, "b:f:he6");
|
258 |
if (c == -1) |
259 |
break;
|
260 |
switch(c) {
|
261 |
case 'h': |
262 |
help(); |
263 |
break;
|
264 |
case 'b': |
265 |
base_filename = optarg; |
266 |
break;
|
267 |
case 'f': |
268 |
fmt = optarg; |
269 |
break;
|
270 |
case 'e': |
271 |
flags |= BLOCK_FLAG_ENCRYPT; |
272 |
break;
|
273 |
case '6': |
274 |
flags |= BLOCK_FLAG_COMPAT6; |
275 |
break;
|
276 |
} |
277 |
} |
278 |
if (optind >= argc)
|
279 |
help(); |
280 |
filename = argv[optind++]; |
281 |
size = 0;
|
282 |
if (base_filename) {
|
283 |
BlockDriverState *bs; |
284 |
bs = bdrv_new_open(base_filename, NULL);
|
285 |
bdrv_get_geometry(bs, &size); |
286 |
size *= 512;
|
287 |
bdrv_delete(bs); |
288 |
} else {
|
289 |
if (optind >= argc)
|
290 |
help(); |
291 |
p = argv[optind]; |
292 |
size = strtoul(p, (char **)&p, 0); |
293 |
if (*p == 'M') { |
294 |
size *= 1024 * 1024; |
295 |
} else if (*p == 'G') { |
296 |
size *= 1024 * 1024 * 1024; |
297 |
} else if (*p == 'k' || *p == 'K' || *p == '\0') { |
298 |
size *= 1024;
|
299 |
} else {
|
300 |
help(); |
301 |
} |
302 |
} |
303 |
drv = bdrv_find_format(fmt); |
304 |
if (!drv)
|
305 |
error("Unknown file format '%s'", fmt);
|
306 |
printf("Formatting '%s', fmt=%s",
|
307 |
filename, fmt); |
308 |
if (flags & BLOCK_FLAG_ENCRYPT)
|
309 |
printf(", encrypted");
|
310 |
if (flags & BLOCK_FLAG_COMPAT6)
|
311 |
printf(", compatibility level=6");
|
312 |
if (base_filename) {
|
313 |
printf(", backing_file=%s",
|
314 |
base_filename); |
315 |
} |
316 |
printf(", size=%" PRId64 " kB\n", (int64_t) (size / 1024)); |
317 |
ret = bdrv_create(drv, filename, size / 512, base_filename, flags);
|
318 |
if (ret < 0) { |
319 |
if (ret == -ENOTSUP) {
|
320 |
error("Formatting or formatting option not supported for file format '%s'", fmt);
|
321 |
} else {
|
322 |
error("Error while formatting");
|
323 |
} |
324 |
} |
325 |
return 0; |
326 |
} |
327 |
|
328 |
static int img_commit(int argc, char **argv) |
329 |
{ |
330 |
int c, ret;
|
331 |
const char *filename, *fmt; |
332 |
BlockDriver *drv; |
333 |
BlockDriverState *bs; |
334 |
|
335 |
fmt = NULL;
|
336 |
for(;;) {
|
337 |
c = getopt(argc, argv, "f:h");
|
338 |
if (c == -1) |
339 |
break;
|
340 |
switch(c) {
|
341 |
case 'h': |
342 |
help(); |
343 |
break;
|
344 |
case 'f': |
345 |
fmt = optarg; |
346 |
break;
|
347 |
} |
348 |
} |
349 |
if (optind >= argc)
|
350 |
help(); |
351 |
filename = argv[optind++]; |
352 |
|
353 |
bs = bdrv_new("");
|
354 |
if (!bs)
|
355 |
error("Not enough memory");
|
356 |
if (fmt) {
|
357 |
drv = bdrv_find_format(fmt); |
358 |
if (!drv)
|
359 |
error("Unknown file format '%s'", fmt);
|
360 |
} else {
|
361 |
drv = NULL;
|
362 |
} |
363 |
if (bdrv_open2(bs, filename, 0, drv) < 0) { |
364 |
error("Could not open '%s'", filename);
|
365 |
} |
366 |
ret = bdrv_commit(bs); |
367 |
switch(ret) {
|
368 |
case 0: |
369 |
printf("Image committed.\n");
|
370 |
break;
|
371 |
case -ENOENT:
|
372 |
error("No disk inserted");
|
373 |
break;
|
374 |
case -EACCES:
|
375 |
error("Image is read-only");
|
376 |
break;
|
377 |
case -ENOTSUP:
|
378 |
error("Image is already committed");
|
379 |
break;
|
380 |
default:
|
381 |
error("Error while committing image");
|
382 |
break;
|
383 |
} |
384 |
|
385 |
bdrv_delete(bs); |
386 |
return 0; |
387 |
} |
388 |
|
389 |
static int is_not_zero(const uint8_t *sector, int len) |
390 |
{ |
391 |
int i;
|
392 |
len >>= 2;
|
393 |
for(i = 0;i < len; i++) { |
394 |
if (((uint32_t *)sector)[i] != 0) |
395 |
return 1; |
396 |
} |
397 |
return 0; |
398 |
} |
399 |
|
400 |
static int is_allocated_sectors(const uint8_t *buf, int n, int *pnum) |
401 |
{ |
402 |
int v, i;
|
403 |
|
404 |
if (n <= 0) { |
405 |
*pnum = 0;
|
406 |
return 0; |
407 |
} |
408 |
v = is_not_zero(buf, 512);
|
409 |
for(i = 1; i < n; i++) { |
410 |
buf += 512;
|
411 |
if (v != is_not_zero(buf, 512)) |
412 |
break;
|
413 |
} |
414 |
*pnum = i; |
415 |
return v;
|
416 |
} |
417 |
|
418 |
#define IO_BUF_SIZE 65536 |
419 |
|
420 |
static int img_convert(int argc, char **argv) |
421 |
{ |
422 |
int c, ret, n, n1, bs_n, bs_i, flags, cluster_size, cluster_sectors;
|
423 |
const char *fmt, *out_fmt, *out_filename; |
424 |
BlockDriver *drv; |
425 |
BlockDriverState **bs, *out_bs; |
426 |
int64_t total_sectors, nb_sectors, sector_num, bs_offset, bs_sectors; |
427 |
uint8_t buf[IO_BUF_SIZE]; |
428 |
const uint8_t *buf1;
|
429 |
BlockDriverInfo bdi; |
430 |
|
431 |
fmt = NULL;
|
432 |
out_fmt = "raw";
|
433 |
flags = 0;
|
434 |
for(;;) {
|
435 |
c = getopt(argc, argv, "f:O:hce6");
|
436 |
if (c == -1) |
437 |
break;
|
438 |
switch(c) {
|
439 |
case 'h': |
440 |
help(); |
441 |
break;
|
442 |
case 'f': |
443 |
fmt = optarg; |
444 |
break;
|
445 |
case 'O': |
446 |
out_fmt = optarg; |
447 |
break;
|
448 |
case 'c': |
449 |
flags |= BLOCK_FLAG_COMPRESS; |
450 |
break;
|
451 |
case 'e': |
452 |
flags |= BLOCK_FLAG_ENCRYPT; |
453 |
break;
|
454 |
case '6': |
455 |
flags |= BLOCK_FLAG_COMPAT6; |
456 |
break;
|
457 |
} |
458 |
} |
459 |
|
460 |
bs_n = argc - optind - 1;
|
461 |
if (bs_n < 1) help(); |
462 |
|
463 |
out_filename = argv[argc - 1];
|
464 |
|
465 |
bs = calloc(bs_n, sizeof(BlockDriverState *));
|
466 |
if (!bs)
|
467 |
error("Out of memory");
|
468 |
|
469 |
total_sectors = 0;
|
470 |
for (bs_i = 0; bs_i < bs_n; bs_i++) { |
471 |
bs[bs_i] = bdrv_new_open(argv[optind + bs_i], fmt); |
472 |
if (!bs[bs_i])
|
473 |
error("Could not open '%s'", argv[optind + bs_i]);
|
474 |
bdrv_get_geometry(bs[bs_i], &bs_sectors); |
475 |
total_sectors += bs_sectors; |
476 |
} |
477 |
|
478 |
drv = bdrv_find_format(out_fmt); |
479 |
if (!drv)
|
480 |
error("Unknown file format '%s'", out_fmt);
|
481 |
if (flags & BLOCK_FLAG_COMPRESS && drv != &bdrv_qcow && drv != &bdrv_qcow2)
|
482 |
error("Compression not supported for this file format");
|
483 |
if (flags & BLOCK_FLAG_ENCRYPT && drv != &bdrv_qcow && drv != &bdrv_qcow2)
|
484 |
error("Encryption not supported for this file format");
|
485 |
if (flags & BLOCK_FLAG_COMPAT6 && drv != &bdrv_vmdk)
|
486 |
error("Alternative compatibility level not supported for this file format");
|
487 |
if (flags & BLOCK_FLAG_ENCRYPT && flags & BLOCK_FLAG_COMPRESS)
|
488 |
error("Compression and encryption not supported at the same time");
|
489 |
|
490 |
ret = bdrv_create(drv, out_filename, total_sectors, NULL, flags);
|
491 |
if (ret < 0) { |
492 |
if (ret == -ENOTSUP) {
|
493 |
error("Formatting not supported for file format '%s'", fmt);
|
494 |
} else {
|
495 |
error("Error while formatting '%s'", out_filename);
|
496 |
} |
497 |
} |
498 |
|
499 |
out_bs = bdrv_new_open(out_filename, out_fmt); |
500 |
|
501 |
bs_i = 0;
|
502 |
bs_offset = 0;
|
503 |
bdrv_get_geometry(bs[0], &bs_sectors);
|
504 |
|
505 |
if (flags & BLOCK_FLAG_COMPRESS) {
|
506 |
if (bdrv_get_info(out_bs, &bdi) < 0) |
507 |
error("could not get block driver info");
|
508 |
cluster_size = bdi.cluster_size; |
509 |
if (cluster_size <= 0 || cluster_size > IO_BUF_SIZE) |
510 |
error("invalid cluster size");
|
511 |
cluster_sectors = cluster_size >> 9;
|
512 |
sector_num = 0;
|
513 |
for(;;) {
|
514 |
int64_t bs_num; |
515 |
int remainder;
|
516 |
uint8_t *buf2; |
517 |
|
518 |
nb_sectors = total_sectors - sector_num; |
519 |
if (nb_sectors <= 0) |
520 |
break;
|
521 |
if (nb_sectors >= cluster_sectors)
|
522 |
n = cluster_sectors; |
523 |
else
|
524 |
n = nb_sectors; |
525 |
|
526 |
bs_num = sector_num - bs_offset; |
527 |
assert (bs_num >= 0);
|
528 |
remainder = n; |
529 |
buf2 = buf; |
530 |
while (remainder > 0) { |
531 |
int nlow;
|
532 |
while (bs_num == bs_sectors) {
|
533 |
bs_i++; |
534 |
assert (bs_i < bs_n); |
535 |
bs_offset += bs_sectors; |
536 |
bdrv_get_geometry(bs[bs_i], &bs_sectors); |
537 |
bs_num = 0;
|
538 |
/* printf("changing part: sector_num=%lld, "
|
539 |
"bs_i=%d, bs_offset=%lld, bs_sectors=%lld\n",
|
540 |
sector_num, bs_i, bs_offset, bs_sectors); */
|
541 |
} |
542 |
assert (bs_num < bs_sectors); |
543 |
|
544 |
nlow = (remainder > bs_sectors - bs_num) ? bs_sectors - bs_num : remainder; |
545 |
|
546 |
if (bdrv_read(bs[bs_i], bs_num, buf2, nlow) < 0) |
547 |
error("error while reading");
|
548 |
|
549 |
buf2 += nlow * 512;
|
550 |
bs_num += nlow; |
551 |
|
552 |
remainder -= nlow; |
553 |
} |
554 |
assert (remainder == 0);
|
555 |
|
556 |
if (n < cluster_sectors)
|
557 |
memset(buf + n * 512, 0, cluster_size - n * 512); |
558 |
if (is_not_zero(buf, cluster_size)) {
|
559 |
if (bdrv_write_compressed(out_bs, sector_num, buf,
|
560 |
cluster_sectors) != 0)
|
561 |
error("error while compressing sector %" PRId64,
|
562 |
sector_num); |
563 |
} |
564 |
sector_num += n; |
565 |
} |
566 |
/* signal EOF to align */
|
567 |
bdrv_write_compressed(out_bs, 0, NULL, 0); |
568 |
} else {
|
569 |
sector_num = 0;
|
570 |
for(;;) {
|
571 |
nb_sectors = total_sectors - sector_num; |
572 |
if (nb_sectors <= 0) |
573 |
break;
|
574 |
if (nb_sectors >= (IO_BUF_SIZE / 512)) |
575 |
n = (IO_BUF_SIZE / 512);
|
576 |
else
|
577 |
n = nb_sectors; |
578 |
|
579 |
while (sector_num - bs_offset >= bs_sectors) {
|
580 |
bs_i ++; |
581 |
assert (bs_i < bs_n); |
582 |
bs_offset += bs_sectors; |
583 |
bdrv_get_geometry(bs[bs_i], &bs_sectors); |
584 |
/* printf("changing part: sector_num=%lld, bs_i=%d, "
|
585 |
"bs_offset=%lld, bs_sectors=%lld\n",
|
586 |
sector_num, bs_i, bs_offset, bs_sectors); */
|
587 |
} |
588 |
|
589 |
if (n > bs_offset + bs_sectors - sector_num)
|
590 |
n = bs_offset + bs_sectors - sector_num; |
591 |
|
592 |
if (bdrv_read(bs[bs_i], sector_num - bs_offset, buf, n) < 0) |
593 |
error("error while reading");
|
594 |
/* NOTE: at the same time we convert, we do not write zero
|
595 |
sectors to have a chance to compress the image. Ideally, we
|
596 |
should add a specific call to have the info to go faster */
|
597 |
buf1 = buf; |
598 |
while (n > 0) { |
599 |
if (is_allocated_sectors(buf1, n, &n1)) {
|
600 |
if (bdrv_write(out_bs, sector_num, buf1, n1) < 0) |
601 |
error("error while writing");
|
602 |
} |
603 |
sector_num += n1; |
604 |
n -= n1; |
605 |
buf1 += n1 * 512;
|
606 |
} |
607 |
} |
608 |
} |
609 |
bdrv_delete(out_bs); |
610 |
for (bs_i = 0; bs_i < bs_n; bs_i++) |
611 |
bdrv_delete(bs[bs_i]); |
612 |
free(bs); |
613 |
return 0; |
614 |
} |
615 |
|
616 |
#ifdef _WIN32
|
617 |
static int64_t get_allocated_file_size(const char *filename) |
618 |
{ |
619 |
typedef DWORD (WINAPI * get_compressed_t)(const char *filename, DWORD *high); |
620 |
get_compressed_t get_compressed; |
621 |
struct _stati64 st;
|
622 |
|
623 |
/* WinNT support GetCompressedFileSize to determine allocate size */
|
624 |
get_compressed = (get_compressed_t) GetProcAddress(GetModuleHandle("kernel32"), "GetCompressedFileSizeA"); |
625 |
if (get_compressed) {
|
626 |
DWORD high, low; |
627 |
low = get_compressed(filename, &high); |
628 |
if (low != 0xFFFFFFFFlu || GetLastError() == NO_ERROR) |
629 |
return (((int64_t) high) << 32) + low; |
630 |
} |
631 |
|
632 |
if (_stati64(filename, &st) < 0) |
633 |
return -1; |
634 |
return st.st_size;
|
635 |
} |
636 |
#else
|
637 |
static int64_t get_allocated_file_size(const char *filename) |
638 |
{ |
639 |
struct stat st;
|
640 |
if (stat(filename, &st) < 0) |
641 |
return -1; |
642 |
return (int64_t)st.st_blocks * 512; |
643 |
} |
644 |
#endif
|
645 |
|
646 |
static void dump_snapshots(BlockDriverState *bs) |
647 |
{ |
648 |
QEMUSnapshotInfo *sn_tab, *sn; |
649 |
int nb_sns, i;
|
650 |
char buf[256]; |
651 |
|
652 |
nb_sns = bdrv_snapshot_list(bs, &sn_tab); |
653 |
if (nb_sns <= 0) |
654 |
return;
|
655 |
printf("Snapshot list:\n");
|
656 |
printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), NULL)); |
657 |
for(i = 0; i < nb_sns; i++) { |
658 |
sn = &sn_tab[i]; |
659 |
printf("%s\n", bdrv_snapshot_dump(buf, sizeof(buf), sn)); |
660 |
} |
661 |
qemu_free(sn_tab); |
662 |
} |
663 |
|
664 |
static int img_info(int argc, char **argv) |
665 |
{ |
666 |
int c;
|
667 |
const char *filename, *fmt; |
668 |
BlockDriver *drv; |
669 |
BlockDriverState *bs; |
670 |
char fmt_name[128], size_buf[128], dsize_buf[128]; |
671 |
int64_t total_sectors, allocated_size; |
672 |
char backing_filename[1024]; |
673 |
char backing_filename2[1024]; |
674 |
BlockDriverInfo bdi; |
675 |
|
676 |
fmt = NULL;
|
677 |
for(;;) {
|
678 |
c = getopt(argc, argv, "f:h");
|
679 |
if (c == -1) |
680 |
break;
|
681 |
switch(c) {
|
682 |
case 'h': |
683 |
help(); |
684 |
break;
|
685 |
case 'f': |
686 |
fmt = optarg; |
687 |
break;
|
688 |
} |
689 |
} |
690 |
if (optind >= argc)
|
691 |
help(); |
692 |
filename = argv[optind++]; |
693 |
|
694 |
bs = bdrv_new("");
|
695 |
if (!bs)
|
696 |
error("Not enough memory");
|
697 |
if (fmt) {
|
698 |
drv = bdrv_find_format(fmt); |
699 |
if (!drv)
|
700 |
error("Unknown file format '%s'", fmt);
|
701 |
} else {
|
702 |
drv = NULL;
|
703 |
} |
704 |
if (bdrv_open2(bs, filename, 0, drv) < 0) { |
705 |
error("Could not open '%s'", filename);
|
706 |
} |
707 |
bdrv_get_format(bs, fmt_name, sizeof(fmt_name));
|
708 |
bdrv_get_geometry(bs, &total_sectors); |
709 |
get_human_readable_size(size_buf, sizeof(size_buf), total_sectors * 512); |
710 |
allocated_size = get_allocated_file_size(filename); |
711 |
if (allocated_size < 0) |
712 |
sprintf(dsize_buf, "unavailable");
|
713 |
else
|
714 |
get_human_readable_size(dsize_buf, sizeof(dsize_buf),
|
715 |
allocated_size); |
716 |
printf("image: %s\n"
|
717 |
"file format: %s\n"
|
718 |
"virtual size: %s (%" PRId64 " bytes)\n" |
719 |
"disk size: %s\n",
|
720 |
filename, fmt_name, size_buf, |
721 |
(total_sectors * 512),
|
722 |
dsize_buf); |
723 |
if (bdrv_is_encrypted(bs))
|
724 |
printf("encrypted: yes\n");
|
725 |
if (bdrv_get_info(bs, &bdi) >= 0) { |
726 |
if (bdi.cluster_size != 0) |
727 |
printf("cluster_size: %d\n", bdi.cluster_size);
|
728 |
} |
729 |
bdrv_get_backing_filename(bs, backing_filename, sizeof(backing_filename));
|
730 |
if (backing_filename[0] != '\0') { |
731 |
path_combine(backing_filename2, sizeof(backing_filename2),
|
732 |
filename, backing_filename); |
733 |
printf("backing file: %s (actual path: %s)\n",
|
734 |
backing_filename, |
735 |
backing_filename2); |
736 |
} |
737 |
dump_snapshots(bs); |
738 |
bdrv_delete(bs); |
739 |
return 0; |
740 |
} |
741 |
|
742 |
int main(int argc, char **argv) |
743 |
{ |
744 |
const char *cmd; |
745 |
|
746 |
bdrv_init(); |
747 |
if (argc < 2) |
748 |
help(); |
749 |
cmd = argv[1];
|
750 |
optind++; |
751 |
if (!strcmp(cmd, "create")) { |
752 |
img_create(argc, argv); |
753 |
} else if (!strcmp(cmd, "commit")) { |
754 |
img_commit(argc, argv); |
755 |
} else if (!strcmp(cmd, "convert")) { |
756 |
img_convert(argc, argv); |
757 |
} else if (!strcmp(cmd, "info")) { |
758 |
img_info(argc, argv); |
759 |
} else {
|
760 |
help(); |
761 |
} |
762 |
return 0; |
763 |
} |