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Commit | Line | Data |
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6ada7453 TS |
1 | /* |
2 | * Block driver for Parallels disk image format | |
3 | * | |
4 | * Copyright (c) 2007 Alex Beregszaszi | |
cc5690f2 | 5 | * Copyright (c) 2015 Denis V. Lunev <den@openvz.org> |
6ada7453 | 6 | * |
cc5690f2 DL |
7 | * This code was originally based on comparing different disk images created |
8 | * by Parallels. Currently it is based on opened OpenVZ sources | |
9 | * available at | |
10 | * http://git.openvz.org/?p=ploop;a=summary | |
6ada7453 TS |
11 | * |
12 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
13 | * of this software and associated documentation files (the "Software"), to deal | |
14 | * in the Software without restriction, including without limitation the rights | |
15 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
16 | * copies of the Software, and to permit persons to whom the Software is | |
17 | * furnished to do so, subject to the following conditions: | |
18 | * | |
19 | * The above copyright notice and this permission notice shall be included in | |
20 | * all copies or substantial portions of the Software. | |
21 | * | |
22 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
23 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
24 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
25 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
26 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
27 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
28 | * THE SOFTWARE. | |
29 | */ | |
faf07963 | 30 | #include "qemu-common.h" |
737e150e | 31 | #include "block/block_int.h" |
1de7afc9 | 32 | #include "qemu/module.h" |
6ada7453 TS |
33 | |
34 | /**************************************************************/ | |
35 | ||
36 | #define HEADER_MAGIC "WithoutFreeSpace" | |
d25d5980 | 37 | #define HEADER_MAGIC2 "WithouFreSpacExt" |
6ada7453 | 38 | #define HEADER_VERSION 2 |
6ada7453 | 39 | |
74cf6c50 DL |
40 | #define DEFAULT_CLUSTER_SIZE 1048576 /* 1 MiB */ |
41 | ||
42 | ||
6ada7453 | 43 | // always little-endian |
07898904 | 44 | typedef struct ParallelsHeader { |
6ada7453 TS |
45 | char magic[16]; // "WithoutFreeSpace" |
46 | uint32_t version; | |
47 | uint32_t heads; | |
48 | uint32_t cylinders; | |
49 | uint32_t tracks; | |
369f7de9 | 50 | uint32_t bat_entries; |
8c27d54f DL |
51 | uint64_t nb_sectors; |
52 | uint32_t inuse; | |
53 | uint32_t data_off; | |
54 | char padding[12]; | |
07898904 | 55 | } QEMU_PACKED ParallelsHeader; |
6ada7453 TS |
56 | |
57 | typedef struct BDRVParallelsState { | |
481fb9cf DL |
58 | /** Locking is conservative, the lock protects |
59 | * - image file extending (truncate, fallocate) | |
60 | * - any access to block allocation table | |
61 | */ | |
848c66e8 | 62 | CoMutex lock; |
6ada7453 | 63 | |
9eae9cca DL |
64 | ParallelsHeader *header; |
65 | uint32_t header_size; | |
369f7de9 DL |
66 | uint32_t *bat_bitmap; |
67 | unsigned int bat_size; | |
6ada7453 | 68 | |
9302e863 | 69 | unsigned int tracks; |
d25d5980 DL |
70 | |
71 | unsigned int off_multiplier; | |
5a41e1fa DL |
72 | |
73 | bool has_truncate; | |
6ada7453 TS |
74 | } BDRVParallelsState; |
75 | ||
555cc9d9 DL |
76 | |
77 | static int64_t bat2sect(BDRVParallelsState *s, uint32_t idx) | |
78 | { | |
dd97cdc0 | 79 | return (uint64_t)le32_to_cpu(s->bat_bitmap[idx]) * s->off_multiplier; |
555cc9d9 DL |
80 | } |
81 | ||
29442569 | 82 | static int64_t seek_to_sector(BDRVParallelsState *s, int64_t sector_num) |
6ada7453 | 83 | { |
c34d2451 | 84 | uint32_t index, offset; |
6ada7453 TS |
85 | |
86 | index = sector_num / s->tracks; | |
87 | offset = sector_num % s->tracks; | |
88 | ||
9d8b88f6 | 89 | /* not allocated */ |
369f7de9 | 90 | if ((index >= s->bat_size) || (s->bat_bitmap[index] == 0)) { |
f08e2f84 | 91 | return -1; |
369f7de9 | 92 | } |
555cc9d9 | 93 | return bat2sect(s, index) + offset; |
6ada7453 TS |
94 | } |
95 | ||
9de9da17 RK |
96 | static int cluster_remainder(BDRVParallelsState *s, int64_t sector_num, |
97 | int nb_sectors) | |
98 | { | |
99 | int ret = s->tracks - sector_num % s->tracks; | |
100 | return MIN(nb_sectors, ret); | |
101 | } | |
102 | ||
5a41e1fa DL |
103 | static int64_t allocate_cluster(BlockDriverState *bs, int64_t sector_num) |
104 | { | |
105 | BDRVParallelsState *s = bs->opaque; | |
dd97cdc0 | 106 | uint32_t idx, offset; |
5a41e1fa DL |
107 | int64_t pos; |
108 | int ret; | |
109 | ||
110 | idx = sector_num / s->tracks; | |
111 | offset = sector_num % s->tracks; | |
112 | ||
369f7de9 | 113 | if (idx >= s->bat_size) { |
5a41e1fa DL |
114 | return -EINVAL; |
115 | } | |
369f7de9 | 116 | if (s->bat_bitmap[idx] != 0) { |
555cc9d9 | 117 | return bat2sect(s, idx) + offset; |
5a41e1fa DL |
118 | } |
119 | ||
120 | pos = bdrv_getlength(bs->file) >> BDRV_SECTOR_BITS; | |
121 | if (s->has_truncate) { | |
122 | ret = bdrv_truncate(bs->file, (pos + s->tracks) << BDRV_SECTOR_BITS); | |
123 | } else { | |
124 | ret = bdrv_write_zeroes(bs->file, pos, s->tracks, 0); | |
125 | } | |
126 | if (ret < 0) { | |
127 | return ret; | |
128 | } | |
129 | ||
dd97cdc0 | 130 | s->bat_bitmap[idx] = cpu_to_le32(pos / s->off_multiplier); |
5a41e1fa | 131 | ret = bdrv_pwrite(bs->file, |
dd97cdc0 DL |
132 | sizeof(ParallelsHeader) + idx * sizeof(s->bat_bitmap[idx]), |
133 | s->bat_bitmap + idx, sizeof(s->bat_bitmap[idx])); | |
5a41e1fa | 134 | if (ret < 0) { |
369f7de9 | 135 | s->bat_bitmap[idx] = 0; |
5a41e1fa DL |
136 | return ret; |
137 | } | |
555cc9d9 | 138 | return bat2sect(s, idx) + offset; |
5a41e1fa DL |
139 | } |
140 | ||
dd3bed16 RK |
141 | static int64_t coroutine_fn parallels_co_get_block_status(BlockDriverState *bs, |
142 | int64_t sector_num, int nb_sectors, int *pnum) | |
143 | { | |
144 | BDRVParallelsState *s = bs->opaque; | |
145 | int64_t offset; | |
146 | ||
147 | qemu_co_mutex_lock(&s->lock); | |
148 | offset = seek_to_sector(s, sector_num); | |
149 | qemu_co_mutex_unlock(&s->lock); | |
150 | ||
151 | *pnum = cluster_remainder(s, sector_num, nb_sectors); | |
152 | ||
153 | if (offset < 0) { | |
154 | return 0; | |
155 | } | |
156 | ||
157 | return (offset << BDRV_SECTOR_BITS) | | |
158 | BDRV_BLOCK_DATA | BDRV_BLOCK_OFFSET_VALID; | |
159 | } | |
160 | ||
5a41e1fa DL |
161 | static coroutine_fn int parallels_co_writev(BlockDriverState *bs, |
162 | int64_t sector_num, int nb_sectors, QEMUIOVector *qiov) | |
163 | { | |
164 | BDRVParallelsState *s = bs->opaque; | |
165 | uint64_t bytes_done = 0; | |
166 | QEMUIOVector hd_qiov; | |
167 | int ret = 0; | |
168 | ||
169 | qemu_iovec_init(&hd_qiov, qiov->niov); | |
170 | ||
171 | while (nb_sectors > 0) { | |
172 | int64_t position; | |
173 | int n, nbytes; | |
174 | ||
175 | qemu_co_mutex_lock(&s->lock); | |
176 | position = allocate_cluster(bs, sector_num); | |
177 | qemu_co_mutex_unlock(&s->lock); | |
178 | if (position < 0) { | |
179 | ret = (int)position; | |
180 | break; | |
181 | } | |
182 | ||
183 | n = cluster_remainder(s, sector_num, nb_sectors); | |
184 | nbytes = n << BDRV_SECTOR_BITS; | |
185 | ||
186 | qemu_iovec_reset(&hd_qiov); | |
187 | qemu_iovec_concat(&hd_qiov, qiov, bytes_done, nbytes); | |
188 | ||
189 | ret = bdrv_co_writev(bs->file, position, n, &hd_qiov); | |
190 | if (ret < 0) { | |
191 | break; | |
192 | } | |
193 | ||
194 | nb_sectors -= n; | |
195 | sector_num += n; | |
196 | bytes_done += nbytes; | |
197 | } | |
198 | ||
199 | qemu_iovec_destroy(&hd_qiov); | |
200 | return ret; | |
201 | } | |
202 | ||
481fb9cf DL |
203 | static coroutine_fn int parallels_co_readv(BlockDriverState *bs, |
204 | int64_t sector_num, int nb_sectors, QEMUIOVector *qiov) | |
6ada7453 | 205 | { |
29442569 | 206 | BDRVParallelsState *s = bs->opaque; |
481fb9cf DL |
207 | uint64_t bytes_done = 0; |
208 | QEMUIOVector hd_qiov; | |
209 | int ret = 0; | |
210 | ||
211 | qemu_iovec_init(&hd_qiov, qiov->niov); | |
29442569 | 212 | |
6ada7453 | 213 | while (nb_sectors > 0) { |
481fb9cf DL |
214 | int64_t position; |
215 | int n, nbytes; | |
216 | ||
217 | qemu_co_mutex_lock(&s->lock); | |
218 | position = seek_to_sector(s, sector_num); | |
219 | qemu_co_mutex_unlock(&s->lock); | |
220 | ||
221 | n = cluster_remainder(s, sector_num, nb_sectors); | |
222 | nbytes = n << BDRV_SECTOR_BITS; | |
223 | ||
224 | if (position < 0) { | |
225 | qemu_iovec_memset(qiov, bytes_done, 0, nbytes); | |
226 | } else { | |
227 | qemu_iovec_reset(&hd_qiov); | |
228 | qemu_iovec_concat(&hd_qiov, qiov, bytes_done, nbytes); | |
229 | ||
230 | ret = bdrv_co_readv(bs->file, position, n, &hd_qiov); | |
29442569 | 231 | if (ret < 0) { |
481fb9cf | 232 | break; |
29442569 | 233 | } |
9d8b88f6 | 234 | } |
481fb9cf | 235 | |
9de9da17 RK |
236 | nb_sectors -= n; |
237 | sector_num += n; | |
481fb9cf | 238 | bytes_done += nbytes; |
6ada7453 | 239 | } |
6ada7453 | 240 | |
481fb9cf | 241 | qemu_iovec_destroy(&hd_qiov); |
2914caa0 PB |
242 | return ret; |
243 | } | |
244 | ||
49ad6467 DL |
245 | |
246 | static int parallels_check(BlockDriverState *bs, BdrvCheckResult *res, | |
247 | BdrvCheckMode fix) | |
248 | { | |
249 | BDRVParallelsState *s = bs->opaque; | |
250 | int64_t size, prev_off, high_off; | |
251 | int ret; | |
252 | uint32_t i; | |
253 | bool flush_bat = false; | |
254 | int cluster_size = s->tracks << BDRV_SECTOR_BITS; | |
255 | ||
256 | size = bdrv_getlength(bs->file); | |
257 | if (size < 0) { | |
258 | res->check_errors++; | |
259 | return size; | |
260 | } | |
261 | ||
262 | res->bfi.total_clusters = s->bat_size; | |
263 | res->bfi.compressed_clusters = 0; /* compression is not supported */ | |
264 | ||
265 | high_off = 0; | |
266 | prev_off = 0; | |
267 | for (i = 0; i < s->bat_size; i++) { | |
268 | int64_t off = bat2sect(s, i) << BDRV_SECTOR_BITS; | |
269 | if (off == 0) { | |
270 | prev_off = 0; | |
271 | continue; | |
272 | } | |
273 | ||
274 | /* cluster outside the image */ | |
275 | if (off > size) { | |
276 | fprintf(stderr, "%s cluster %u is outside image\n", | |
277 | fix & BDRV_FIX_ERRORS ? "Repairing" : "ERROR", i); | |
278 | res->corruptions++; | |
279 | if (fix & BDRV_FIX_ERRORS) { | |
280 | prev_off = 0; | |
281 | s->bat_bitmap[i] = 0; | |
282 | res->corruptions_fixed++; | |
283 | flush_bat = true; | |
284 | continue; | |
285 | } | |
286 | } | |
287 | ||
288 | res->bfi.allocated_clusters++; | |
289 | if (off > high_off) { | |
290 | high_off = off; | |
291 | } | |
292 | ||
293 | if (prev_off != 0 && (prev_off + cluster_size) != off) { | |
294 | res->bfi.fragmented_clusters++; | |
295 | } | |
296 | prev_off = off; | |
297 | } | |
298 | ||
299 | if (flush_bat) { | |
300 | ret = bdrv_pwrite_sync(bs->file, 0, s->header, s->header_size); | |
301 | if (ret < 0) { | |
302 | res->check_errors++; | |
303 | return ret; | |
304 | } | |
305 | } | |
306 | ||
307 | res->image_end_offset = high_off + cluster_size; | |
308 | if (size > res->image_end_offset) { | |
309 | int64_t count; | |
310 | count = DIV_ROUND_UP(size - res->image_end_offset, cluster_size); | |
311 | fprintf(stderr, "%s space leaked at the end of the image %" PRId64 "\n", | |
312 | fix & BDRV_FIX_LEAKS ? "Repairing" : "ERROR", | |
313 | size - res->image_end_offset); | |
314 | res->leaks += count; | |
315 | if (fix & BDRV_FIX_LEAKS) { | |
316 | ret = bdrv_truncate(bs->file, res->image_end_offset); | |
317 | if (ret < 0) { | |
318 | res->check_errors++; | |
319 | return ret; | |
320 | } | |
321 | res->leaks_fixed += count; | |
322 | } | |
323 | } | |
324 | ||
325 | return 0; | |
326 | } | |
327 | ||
328 | ||
74cf6c50 DL |
329 | static int parallels_create(const char *filename, QemuOpts *opts, Error **errp) |
330 | { | |
331 | int64_t total_size, cl_size; | |
332 | uint8_t tmp[BDRV_SECTOR_SIZE]; | |
333 | Error *local_err = NULL; | |
334 | BlockDriverState *file; | |
369f7de9 | 335 | uint32_t bat_entries, bat_sectors; |
74cf6c50 DL |
336 | ParallelsHeader header; |
337 | int ret; | |
338 | ||
339 | total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), | |
340 | BDRV_SECTOR_SIZE); | |
341 | cl_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_CLUSTER_SIZE, | |
342 | DEFAULT_CLUSTER_SIZE), BDRV_SECTOR_SIZE); | |
343 | ||
344 | ret = bdrv_create_file(filename, opts, &local_err); | |
345 | if (ret < 0) { | |
346 | error_propagate(errp, local_err); | |
347 | return ret; | |
348 | } | |
349 | ||
350 | file = NULL; | |
351 | ret = bdrv_open(&file, filename, NULL, NULL, | |
352 | BDRV_O_RDWR | BDRV_O_PROTOCOL, NULL, &local_err); | |
353 | if (ret < 0) { | |
354 | error_propagate(errp, local_err); | |
355 | return ret; | |
356 | } | |
357 | ret = bdrv_truncate(file, 0); | |
358 | if (ret < 0) { | |
359 | goto exit; | |
360 | } | |
361 | ||
369f7de9 DL |
362 | bat_entries = DIV_ROUND_UP(total_size, cl_size); |
363 | bat_sectors = DIV_ROUND_UP(bat_entries * sizeof(uint32_t) + | |
74cf6c50 | 364 | sizeof(ParallelsHeader), cl_size); |
369f7de9 | 365 | bat_sectors = (bat_sectors * cl_size) >> BDRV_SECTOR_BITS; |
74cf6c50 DL |
366 | |
367 | memset(&header, 0, sizeof(header)); | |
368 | memcpy(header.magic, HEADER_MAGIC2, sizeof(header.magic)); | |
369 | header.version = cpu_to_le32(HEADER_VERSION); | |
370 | /* don't care much about geometry, it is not used on image level */ | |
371 | header.heads = cpu_to_le32(16); | |
372 | header.cylinders = cpu_to_le32(total_size / BDRV_SECTOR_SIZE / 16 / 32); | |
373 | header.tracks = cpu_to_le32(cl_size >> BDRV_SECTOR_BITS); | |
369f7de9 | 374 | header.bat_entries = cpu_to_le32(bat_entries); |
74cf6c50 | 375 | header.nb_sectors = cpu_to_le64(DIV_ROUND_UP(total_size, BDRV_SECTOR_SIZE)); |
369f7de9 | 376 | header.data_off = cpu_to_le32(bat_sectors); |
74cf6c50 DL |
377 | |
378 | /* write all the data */ | |
379 | memset(tmp, 0, sizeof(tmp)); | |
380 | memcpy(tmp, &header, sizeof(header)); | |
381 | ||
382 | ret = bdrv_pwrite(file, 0, tmp, BDRV_SECTOR_SIZE); | |
383 | if (ret < 0) { | |
384 | goto exit; | |
385 | } | |
369f7de9 | 386 | ret = bdrv_write_zeroes(file, 1, bat_sectors - 1, 0); |
74cf6c50 DL |
387 | if (ret < 0) { |
388 | goto exit; | |
389 | } | |
390 | ret = 0; | |
391 | ||
392 | done: | |
393 | bdrv_unref(file); | |
394 | return ret; | |
395 | ||
396 | exit: | |
397 | error_setg_errno(errp, -ret, "Failed to create Parallels image"); | |
398 | goto done; | |
399 | } | |
400 | ||
23d6bd3b DL |
401 | |
402 | static int parallels_probe(const uint8_t *buf, int buf_size, | |
403 | const char *filename) | |
404 | { | |
405 | const ParallelsHeader *ph = (const void *)buf; | |
406 | ||
407 | if (buf_size < sizeof(ParallelsHeader)) { | |
408 | return 0; | |
409 | } | |
410 | ||
411 | if ((!memcmp(ph->magic, HEADER_MAGIC, 16) || | |
412 | !memcmp(ph->magic, HEADER_MAGIC2, 16)) && | |
413 | (le32_to_cpu(ph->version) == HEADER_VERSION)) { | |
414 | return 100; | |
415 | } | |
416 | ||
417 | return 0; | |
418 | } | |
419 | ||
420 | static int parallels_open(BlockDriverState *bs, QDict *options, int flags, | |
421 | Error **errp) | |
422 | { | |
423 | BDRVParallelsState *s = bs->opaque; | |
424 | ParallelsHeader ph; | |
425 | int ret, size; | |
426 | ||
427 | ret = bdrv_pread(bs->file, 0, &ph, sizeof(ph)); | |
428 | if (ret < 0) { | |
429 | goto fail; | |
430 | } | |
431 | ||
432 | bs->total_sectors = le64_to_cpu(ph.nb_sectors); | |
433 | ||
434 | if (le32_to_cpu(ph.version) != HEADER_VERSION) { | |
435 | goto fail_format; | |
436 | } | |
437 | if (!memcmp(ph.magic, HEADER_MAGIC, 16)) { | |
438 | s->off_multiplier = 1; | |
439 | bs->total_sectors = 0xffffffff & bs->total_sectors; | |
440 | } else if (!memcmp(ph.magic, HEADER_MAGIC2, 16)) { | |
441 | s->off_multiplier = le32_to_cpu(ph.tracks); | |
442 | } else { | |
443 | goto fail_format; | |
444 | } | |
445 | ||
446 | s->tracks = le32_to_cpu(ph.tracks); | |
447 | if (s->tracks == 0) { | |
448 | error_setg(errp, "Invalid image: Zero sectors per track"); | |
449 | ret = -EINVAL; | |
450 | goto fail; | |
451 | } | |
452 | if (s->tracks > INT32_MAX/513) { | |
453 | error_setg(errp, "Invalid image: Too big cluster"); | |
454 | ret = -EFBIG; | |
455 | goto fail; | |
456 | } | |
457 | ||
458 | s->bat_size = le32_to_cpu(ph.bat_entries); | |
459 | if (s->bat_size > INT_MAX / sizeof(uint32_t)) { | |
460 | error_setg(errp, "Catalog too large"); | |
461 | ret = -EFBIG; | |
462 | goto fail; | |
463 | } | |
464 | ||
465 | size = sizeof(ParallelsHeader) + sizeof(uint32_t) * s->bat_size; | |
466 | s->header_size = ROUND_UP(size, bdrv_opt_mem_align(bs->file)); | |
467 | s->header = qemu_try_blockalign(bs->file, s->header_size); | |
468 | if (s->header == NULL) { | |
469 | ret = -ENOMEM; | |
470 | goto fail; | |
471 | } | |
472 | if (le32_to_cpu(ph.data_off) < s->header_size) { | |
473 | /* there is not enough unused space to fit to block align between BAT | |
474 | and actual data. We can't avoid read-modify-write... */ | |
475 | s->header_size = size; | |
476 | } | |
477 | ||
478 | ret = bdrv_pread(bs->file, 0, s->header, s->header_size); | |
479 | if (ret < 0) { | |
480 | goto fail; | |
481 | } | |
482 | s->bat_bitmap = (uint32_t *)(s->header + 1); | |
483 | ||
484 | s->has_truncate = bdrv_has_zero_init(bs->file) && | |
485 | bdrv_truncate(bs->file, bdrv_getlength(bs->file)) == 0; | |
486 | ||
487 | qemu_co_mutex_init(&s->lock); | |
488 | return 0; | |
489 | ||
490 | fail_format: | |
491 | error_setg(errp, "Image not in Parallels format"); | |
492 | ret = -EINVAL; | |
493 | fail: | |
494 | qemu_vfree(s->header); | |
495 | return ret; | |
496 | } | |
497 | ||
498 | ||
6ada7453 TS |
499 | static void parallels_close(BlockDriverState *bs) |
500 | { | |
501 | BDRVParallelsState *s = bs->opaque; | |
9eae9cca | 502 | qemu_vfree(s->header); |
6ada7453 TS |
503 | } |
504 | ||
74cf6c50 DL |
505 | static QemuOptsList parallels_create_opts = { |
506 | .name = "parallels-create-opts", | |
507 | .head = QTAILQ_HEAD_INITIALIZER(parallels_create_opts.head), | |
508 | .desc = { | |
509 | { | |
510 | .name = BLOCK_OPT_SIZE, | |
511 | .type = QEMU_OPT_SIZE, | |
512 | .help = "Virtual disk size", | |
513 | }, | |
514 | { | |
515 | .name = BLOCK_OPT_CLUSTER_SIZE, | |
516 | .type = QEMU_OPT_SIZE, | |
517 | .help = "Parallels image cluster size", | |
518 | .def_value_str = stringify(DEFAULT_CLUSTER_SIZE), | |
519 | }, | |
520 | { /* end of list */ } | |
521 | } | |
522 | }; | |
523 | ||
5efa9d5a | 524 | static BlockDriver bdrv_parallels = { |
e60f469c AJ |
525 | .format_name = "parallels", |
526 | .instance_size = sizeof(BDRVParallelsState), | |
527 | .bdrv_probe = parallels_probe, | |
1dec5a70 | 528 | .bdrv_open = parallels_open, |
e60f469c | 529 | .bdrv_close = parallels_close, |
dd3bed16 | 530 | .bdrv_co_get_block_status = parallels_co_get_block_status, |
d0e61ce5 | 531 | .bdrv_has_zero_init = bdrv_has_zero_init_1, |
481fb9cf | 532 | .bdrv_co_readv = parallels_co_readv, |
5a41e1fa | 533 | .bdrv_co_writev = parallels_co_writev, |
74cf6c50 DL |
534 | |
535 | .bdrv_create = parallels_create, | |
49ad6467 | 536 | .bdrv_check = parallels_check, |
74cf6c50 | 537 | .create_opts = ¶llels_create_opts, |
6ada7453 | 538 | }; |
5efa9d5a AL |
539 | |
540 | static void bdrv_parallels_init(void) | |
541 | { | |
542 | bdrv_register(&bdrv_parallels); | |
543 | } | |
544 | ||
545 | block_init(bdrv_parallels_init); |