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Commit | Line | Data |
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ea2384d3 FB |
1 | /* |
2 | * Block driver for the VMDK format | |
5fafdf24 | 3 | * |
ea2384d3 | 4 | * Copyright (c) 2004 Fabrice Bellard |
ff1afc72 | 5 | * Copyright (c) 2005 Filip Navara |
5fafdf24 | 6 | * |
ea2384d3 FB |
7 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
8 | * of this software and associated documentation files (the "Software"), to deal | |
9 | * in the Software without restriction, including without limitation the rights | |
10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
11 | * copies of the Software, and to permit persons to whom the Software is | |
12 | * furnished to do so, subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice shall be included in | |
15 | * all copies or substantial portions of the Software. | |
16 | * | |
17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
23 | * THE SOFTWARE. | |
24 | */ | |
5f4da8c0 | 25 | |
faf07963 | 26 | #include "qemu-common.h" |
ea2384d3 | 27 | #include "block_int.h" |
5efa9d5a | 28 | #include "module.h" |
432bb170 | 29 | #include "zlib.h" |
ea2384d3 | 30 | |
ea2384d3 FB |
31 | #define VMDK3_MAGIC (('C' << 24) | ('O' << 16) | ('W' << 8) | 'D') |
32 | #define VMDK4_MAGIC (('K' << 24) | ('D' << 16) | ('M' << 8) | 'V') | |
432bb170 | 33 | #define VMDK4_COMPRESSION_DEFLATE 1 |
bb45ded9 | 34 | #define VMDK4_FLAG_RGD (1 << 1) |
432bb170 FZ |
35 | #define VMDK4_FLAG_COMPRESS (1 << 16) |
36 | #define VMDK4_FLAG_MARKER (1 << 17) | |
ea2384d3 FB |
37 | |
38 | typedef struct { | |
39 | uint32_t version; | |
40 | uint32_t flags; | |
41 | uint32_t disk_sectors; | |
42 | uint32_t granularity; | |
43 | uint32_t l1dir_offset; | |
44 | uint32_t l1dir_size; | |
45 | uint32_t file_sectors; | |
46 | uint32_t cylinders; | |
47 | uint32_t heads; | |
48 | uint32_t sectors_per_track; | |
49 | } VMDK3Header; | |
50 | ||
51 | typedef struct { | |
52 | uint32_t version; | |
53 | uint32_t flags; | |
54 | int64_t capacity; | |
55 | int64_t granularity; | |
56 | int64_t desc_offset; | |
57 | int64_t desc_size; | |
58 | int32_t num_gtes_per_gte; | |
ea2384d3 | 59 | int64_t gd_offset; |
bb45ded9 | 60 | int64_t rgd_offset; |
ea2384d3 FB |
61 | int64_t grain_offset; |
62 | char filler[1]; | |
63 | char check_bytes[4]; | |
432bb170 | 64 | uint16_t compressAlgorithm; |
541dc0d4 | 65 | } QEMU_PACKED VMDK4Header; |
ea2384d3 FB |
66 | |
67 | #define L2_CACHE_SIZE 16 | |
68 | ||
b3976d3c FZ |
69 | typedef struct VmdkExtent { |
70 | BlockDriverState *file; | |
71 | bool flat; | |
432bb170 FZ |
72 | bool compressed; |
73 | bool has_marker; | |
b3976d3c FZ |
74 | int64_t sectors; |
75 | int64_t end_sector; | |
7fa60fa3 | 76 | int64_t flat_start_offset; |
ea2384d3 | 77 | int64_t l1_table_offset; |
ff1afc72 | 78 | int64_t l1_backup_table_offset; |
ea2384d3 | 79 | uint32_t *l1_table; |
ff1afc72 | 80 | uint32_t *l1_backup_table; |
ea2384d3 FB |
81 | unsigned int l1_size; |
82 | uint32_t l1_entry_sectors; | |
83 | ||
84 | unsigned int l2_size; | |
85 | uint32_t *l2_cache; | |
86 | uint32_t l2_cache_offsets[L2_CACHE_SIZE]; | |
87 | uint32_t l2_cache_counts[L2_CACHE_SIZE]; | |
88 | ||
89 | unsigned int cluster_sectors; | |
b3976d3c FZ |
90 | } VmdkExtent; |
91 | ||
92 | typedef struct BDRVVmdkState { | |
e1da9b24 | 93 | int desc_offset; |
69b4d86d | 94 | bool cid_updated; |
5f4da8c0 | 95 | uint32_t parent_cid; |
b3976d3c FZ |
96 | int num_extents; |
97 | /* Extent array with num_extents entries, ascend ordered by address */ | |
98 | VmdkExtent *extents; | |
ea2384d3 FB |
99 | } BDRVVmdkState; |
100 | ||
630530a6 TS |
101 | typedef struct VmdkMetaData { |
102 | uint32_t offset; | |
103 | unsigned int l1_index; | |
104 | unsigned int l2_index; | |
105 | unsigned int l2_offset; | |
106 | int valid; | |
107 | } VmdkMetaData; | |
108 | ||
432bb170 FZ |
109 | typedef struct VmdkGrainMarker { |
110 | uint64_t lba; | |
111 | uint32_t size; | |
112 | uint8_t data[0]; | |
113 | } VmdkGrainMarker; | |
114 | ||
ea2384d3 FB |
115 | static int vmdk_probe(const uint8_t *buf, int buf_size, const char *filename) |
116 | { | |
117 | uint32_t magic; | |
118 | ||
ae261c86 | 119 | if (buf_size < 4) { |
ea2384d3 | 120 | return 0; |
ae261c86 | 121 | } |
ea2384d3 FB |
122 | magic = be32_to_cpu(*(uint32_t *)buf); |
123 | if (magic == VMDK3_MAGIC || | |
01fc99d6 | 124 | magic == VMDK4_MAGIC) { |
ea2384d3 | 125 | return 100; |
01fc99d6 FZ |
126 | } else { |
127 | const char *p = (const char *)buf; | |
128 | const char *end = p + buf_size; | |
129 | while (p < end) { | |
130 | if (*p == '#') { | |
131 | /* skip comment line */ | |
132 | while (p < end && *p != '\n') { | |
133 | p++; | |
134 | } | |
135 | p++; | |
136 | continue; | |
137 | } | |
138 | if (*p == ' ') { | |
139 | while (p < end && *p == ' ') { | |
140 | p++; | |
141 | } | |
142 | /* skip '\r' if windows line endings used. */ | |
143 | if (p < end && *p == '\r') { | |
144 | p++; | |
145 | } | |
146 | /* only accept blank lines before 'version=' line */ | |
147 | if (p == end || *p != '\n') { | |
148 | return 0; | |
149 | } | |
150 | p++; | |
151 | continue; | |
152 | } | |
153 | if (end - p >= strlen("version=X\n")) { | |
154 | if (strncmp("version=1\n", p, strlen("version=1\n")) == 0 || | |
155 | strncmp("version=2\n", p, strlen("version=2\n")) == 0) { | |
156 | return 100; | |
157 | } | |
158 | } | |
159 | if (end - p >= strlen("version=X\r\n")) { | |
160 | if (strncmp("version=1\r\n", p, strlen("version=1\r\n")) == 0 || | |
161 | strncmp("version=2\r\n", p, strlen("version=2\r\n")) == 0) { | |
162 | return 100; | |
163 | } | |
164 | } | |
165 | return 0; | |
166 | } | |
ea2384d3 | 167 | return 0; |
01fc99d6 | 168 | } |
ea2384d3 FB |
169 | } |
170 | ||
5f4da8c0 TS |
171 | #define CHECK_CID 1 |
172 | ||
3b46e624 | 173 | #define SECTOR_SIZE 512 |
f66fd6c3 FZ |
174 | #define DESC_SIZE (20 * SECTOR_SIZE) /* 20 sectors of 512 bytes each */ |
175 | #define BUF_SIZE 4096 | |
176 | #define HEADER_SIZE 512 /* first sector of 512 bytes */ | |
5f4da8c0 | 177 | |
b3976d3c FZ |
178 | static void vmdk_free_extents(BlockDriverState *bs) |
179 | { | |
180 | int i; | |
181 | BDRVVmdkState *s = bs->opaque; | |
b3c0bfb6 | 182 | VmdkExtent *e; |
b3976d3c FZ |
183 | |
184 | for (i = 0; i < s->num_extents; i++) { | |
b3c0bfb6 FZ |
185 | e = &s->extents[i]; |
186 | g_free(e->l1_table); | |
187 | g_free(e->l2_cache); | |
188 | g_free(e->l1_backup_table); | |
189 | if (e->file != bs->file) { | |
190 | bdrv_delete(e->file); | |
191 | } | |
b3976d3c | 192 | } |
7267c094 | 193 | g_free(s->extents); |
b3976d3c FZ |
194 | } |
195 | ||
86c6b429 FZ |
196 | static void vmdk_free_last_extent(BlockDriverState *bs) |
197 | { | |
198 | BDRVVmdkState *s = bs->opaque; | |
199 | ||
200 | if (s->num_extents == 0) { | |
201 | return; | |
202 | } | |
203 | s->num_extents--; | |
204 | s->extents = g_realloc(s->extents, s->num_extents * sizeof(VmdkExtent)); | |
205 | } | |
206 | ||
5f4da8c0 | 207 | static uint32_t vmdk_read_cid(BlockDriverState *bs, int parent) |
ea2384d3 | 208 | { |
5f4da8c0 TS |
209 | char desc[DESC_SIZE]; |
210 | uint32_t cid; | |
7ccfb2eb | 211 | const char *p_name, *cid_str; |
5f4da8c0 | 212 | size_t cid_str_size; |
e1da9b24 | 213 | BDRVVmdkState *s = bs->opaque; |
5f4da8c0 | 214 | |
e1da9b24 | 215 | if (bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE) != DESC_SIZE) { |
5f4da8c0 | 216 | return 0; |
e1da9b24 | 217 | } |
5f4da8c0 TS |
218 | |
219 | if (parent) { | |
220 | cid_str = "parentCID"; | |
221 | cid_str_size = sizeof("parentCID"); | |
222 | } else { | |
223 | cid_str = "CID"; | |
224 | cid_str_size = sizeof("CID"); | |
225 | } | |
226 | ||
ae261c86 FZ |
227 | p_name = strstr(desc, cid_str); |
228 | if (p_name != NULL) { | |
5f4da8c0 | 229 | p_name += cid_str_size; |
ae261c86 | 230 | sscanf(p_name, "%x", &cid); |
5f4da8c0 TS |
231 | } |
232 | ||
233 | return cid; | |
234 | } | |
235 | ||
236 | static int vmdk_write_cid(BlockDriverState *bs, uint32_t cid) | |
237 | { | |
5f4da8c0 TS |
238 | char desc[DESC_SIZE], tmp_desc[DESC_SIZE]; |
239 | char *p_name, *tmp_str; | |
e1da9b24 | 240 | BDRVVmdkState *s = bs->opaque; |
5f4da8c0 | 241 | |
e1da9b24 FZ |
242 | memset(desc, 0, sizeof(desc)); |
243 | if (bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE) != DESC_SIZE) { | |
244 | return -EIO; | |
245 | } | |
5f4da8c0 | 246 | |
ae261c86 | 247 | tmp_str = strstr(desc, "parentCID"); |
363a37d5 | 248 | pstrcpy(tmp_desc, sizeof(tmp_desc), tmp_str); |
ae261c86 FZ |
249 | p_name = strstr(desc, "CID"); |
250 | if (p_name != NULL) { | |
5f4da8c0 | 251 | p_name += sizeof("CID"); |
363a37d5 BS |
252 | snprintf(p_name, sizeof(desc) - (p_name - desc), "%x\n", cid); |
253 | pstrcat(desc, sizeof(desc), tmp_desc); | |
5f4da8c0 TS |
254 | } |
255 | ||
e1da9b24 FZ |
256 | if (bdrv_pwrite_sync(bs->file, s->desc_offset, desc, DESC_SIZE) < 0) { |
257 | return -EIO; | |
258 | } | |
5f4da8c0 TS |
259 | return 0; |
260 | } | |
261 | ||
262 | static int vmdk_is_cid_valid(BlockDriverState *bs) | |
263 | { | |
264 | #ifdef CHECK_CID | |
265 | BDRVVmdkState *s = bs->opaque; | |
b171271a | 266 | BlockDriverState *p_bs = bs->backing_hd; |
5f4da8c0 TS |
267 | uint32_t cur_pcid; |
268 | ||
269 | if (p_bs) { | |
ae261c86 FZ |
270 | cur_pcid = vmdk_read_cid(p_bs, 0); |
271 | if (s->parent_cid != cur_pcid) { | |
272 | /* CID not valid */ | |
5f4da8c0 | 273 | return 0; |
ae261c86 | 274 | } |
5f4da8c0 TS |
275 | } |
276 | #endif | |
ae261c86 | 277 | /* CID valid */ |
5f4da8c0 TS |
278 | return 1; |
279 | } | |
280 | ||
9949f97e | 281 | static int vmdk_parent_open(BlockDriverState *bs) |
5f4da8c0 | 282 | { |
5fafdf24 | 283 | char *p_name; |
7fa60fa3 | 284 | char desc[DESC_SIZE + 1]; |
e1da9b24 | 285 | BDRVVmdkState *s = bs->opaque; |
588b65a3 | 286 | int ret; |
5f4da8c0 | 287 | |
7fa60fa3 | 288 | desc[DESC_SIZE] = '\0'; |
588b65a3 PB |
289 | ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); |
290 | if (ret < 0) { | |
291 | return ret; | |
e1da9b24 | 292 | } |
5f4da8c0 | 293 | |
ae261c86 FZ |
294 | p_name = strstr(desc, "parentFileNameHint"); |
295 | if (p_name != NULL) { | |
5f4da8c0 | 296 | char *end_name; |
5f4da8c0 TS |
297 | |
298 | p_name += sizeof("parentFileNameHint") + 1; | |
ae261c86 FZ |
299 | end_name = strchr(p_name, '\"'); |
300 | if (end_name == NULL) { | |
588b65a3 | 301 | return -EINVAL; |
ae261c86 FZ |
302 | } |
303 | if ((end_name - p_name) > sizeof(bs->backing_file) - 1) { | |
588b65a3 | 304 | return -EINVAL; |
ae261c86 | 305 | } |
3b46e624 | 306 | |
b171271a | 307 | pstrcpy(bs->backing_file, end_name - p_name + 1, p_name); |
ff1afc72 | 308 | } |
5f4da8c0 TS |
309 | |
310 | return 0; | |
311 | } | |
312 | ||
b3976d3c FZ |
313 | /* Create and append extent to the extent array. Return the added VmdkExtent |
314 | * address. return NULL if allocation failed. */ | |
315 | static VmdkExtent *vmdk_add_extent(BlockDriverState *bs, | |
316 | BlockDriverState *file, bool flat, int64_t sectors, | |
317 | int64_t l1_offset, int64_t l1_backup_offset, | |
318 | uint32_t l1_size, | |
319 | int l2_size, unsigned int cluster_sectors) | |
320 | { | |
321 | VmdkExtent *extent; | |
322 | BDRVVmdkState *s = bs->opaque; | |
323 | ||
7267c094 | 324 | s->extents = g_realloc(s->extents, |
b3976d3c FZ |
325 | (s->num_extents + 1) * sizeof(VmdkExtent)); |
326 | extent = &s->extents[s->num_extents]; | |
327 | s->num_extents++; | |
328 | ||
329 | memset(extent, 0, sizeof(VmdkExtent)); | |
330 | extent->file = file; | |
331 | extent->flat = flat; | |
332 | extent->sectors = sectors; | |
333 | extent->l1_table_offset = l1_offset; | |
334 | extent->l1_backup_table_offset = l1_backup_offset; | |
335 | extent->l1_size = l1_size; | |
336 | extent->l1_entry_sectors = l2_size * cluster_sectors; | |
337 | extent->l2_size = l2_size; | |
338 | extent->cluster_sectors = cluster_sectors; | |
339 | ||
340 | if (s->num_extents > 1) { | |
341 | extent->end_sector = (*(extent - 1)).end_sector + extent->sectors; | |
342 | } else { | |
343 | extent->end_sector = extent->sectors; | |
344 | } | |
345 | bs->total_sectors = extent->end_sector; | |
346 | return extent; | |
347 | } | |
348 | ||
b4b3ab14 | 349 | static int vmdk_init_tables(BlockDriverState *bs, VmdkExtent *extent) |
5f4da8c0 | 350 | { |
b4b3ab14 FZ |
351 | int ret; |
352 | int l1_size, i; | |
5f4da8c0 | 353 | |
ea2384d3 | 354 | /* read the L1 table */ |
b3976d3c | 355 | l1_size = extent->l1_size * sizeof(uint32_t); |
7267c094 | 356 | extent->l1_table = g_malloc(l1_size); |
b4b3ab14 FZ |
357 | ret = bdrv_pread(extent->file, |
358 | extent->l1_table_offset, | |
359 | extent->l1_table, | |
360 | l1_size); | |
361 | if (ret < 0) { | |
362 | goto fail_l1; | |
b3976d3c FZ |
363 | } |
364 | for (i = 0; i < extent->l1_size; i++) { | |
365 | le32_to_cpus(&extent->l1_table[i]); | |
ea2384d3 FB |
366 | } |
367 | ||
b3976d3c | 368 | if (extent->l1_backup_table_offset) { |
7267c094 | 369 | extent->l1_backup_table = g_malloc(l1_size); |
b4b3ab14 FZ |
370 | ret = bdrv_pread(extent->file, |
371 | extent->l1_backup_table_offset, | |
372 | extent->l1_backup_table, | |
373 | l1_size); | |
374 | if (ret < 0) { | |
375 | goto fail_l1b; | |
b3976d3c FZ |
376 | } |
377 | for (i = 0; i < extent->l1_size; i++) { | |
378 | le32_to_cpus(&extent->l1_backup_table[i]); | |
ff1afc72 FB |
379 | } |
380 | } | |
381 | ||
b3976d3c | 382 | extent->l2_cache = |
7267c094 | 383 | g_malloc(extent->l2_size * L2_CACHE_SIZE * sizeof(uint32_t)); |
ea2384d3 | 384 | return 0; |
b4b3ab14 | 385 | fail_l1b: |
7267c094 | 386 | g_free(extent->l1_backup_table); |
b4b3ab14 | 387 | fail_l1: |
7267c094 | 388 | g_free(extent->l1_table); |
b4b3ab14 FZ |
389 | return ret; |
390 | } | |
391 | ||
86c6b429 FZ |
392 | static int vmdk_open_vmdk3(BlockDriverState *bs, |
393 | BlockDriverState *file, | |
394 | int flags) | |
b4b3ab14 FZ |
395 | { |
396 | int ret; | |
397 | uint32_t magic; | |
398 | VMDK3Header header; | |
399 | VmdkExtent *extent; | |
400 | ||
86c6b429 | 401 | ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header)); |
b4b3ab14 | 402 | if (ret < 0) { |
86c6b429 | 403 | return ret; |
b4b3ab14 FZ |
404 | } |
405 | extent = vmdk_add_extent(bs, | |
406 | bs->file, false, | |
407 | le32_to_cpu(header.disk_sectors), | |
408 | le32_to_cpu(header.l1dir_offset) << 9, | |
409 | 0, 1 << 6, 1 << 9, | |
410 | le32_to_cpu(header.granularity)); | |
411 | ret = vmdk_init_tables(bs, extent); | |
412 | if (ret) { | |
86c6b429 FZ |
413 | /* free extent allocated by vmdk_add_extent */ |
414 | vmdk_free_last_extent(bs); | |
b4b3ab14 | 415 | } |
b4b3ab14 FZ |
416 | return ret; |
417 | } | |
418 | ||
f16f509d FZ |
419 | static int vmdk_open_desc_file(BlockDriverState *bs, int flags, |
420 | int64_t desc_offset); | |
421 | ||
86c6b429 FZ |
422 | static int vmdk_open_vmdk4(BlockDriverState *bs, |
423 | BlockDriverState *file, | |
424 | int flags) | |
b4b3ab14 FZ |
425 | { |
426 | int ret; | |
427 | uint32_t magic; | |
428 | uint32_t l1_size, l1_entry_sectors; | |
429 | VMDK4Header header; | |
b4b3ab14 | 430 | VmdkExtent *extent; |
bb45ded9 | 431 | int64_t l1_backup_offset = 0; |
b4b3ab14 | 432 | |
86c6b429 | 433 | ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header)); |
b4b3ab14 | 434 | if (ret < 0) { |
86c6b429 | 435 | return ret; |
b4b3ab14 | 436 | } |
f16f509d FZ |
437 | if (header.capacity == 0 && header.desc_offset) { |
438 | return vmdk_open_desc_file(bs, flags, header.desc_offset << 9); | |
439 | } | |
b4b3ab14 FZ |
440 | l1_entry_sectors = le32_to_cpu(header.num_gtes_per_gte) |
441 | * le64_to_cpu(header.granularity); | |
86c6b429 FZ |
442 | if (l1_entry_sectors <= 0) { |
443 | return -EINVAL; | |
444 | } | |
b4b3ab14 FZ |
445 | l1_size = (le64_to_cpu(header.capacity) + l1_entry_sectors - 1) |
446 | / l1_entry_sectors; | |
bb45ded9 FZ |
447 | if (le32_to_cpu(header.flags) & VMDK4_FLAG_RGD) { |
448 | l1_backup_offset = le64_to_cpu(header.rgd_offset) << 9; | |
449 | } | |
86c6b429 | 450 | extent = vmdk_add_extent(bs, file, false, |
b4b3ab14 FZ |
451 | le64_to_cpu(header.capacity), |
452 | le64_to_cpu(header.gd_offset) << 9, | |
bb45ded9 | 453 | l1_backup_offset, |
b4b3ab14 FZ |
454 | l1_size, |
455 | le32_to_cpu(header.num_gtes_per_gte), | |
456 | le64_to_cpu(header.granularity)); | |
432bb170 FZ |
457 | extent->compressed = |
458 | le16_to_cpu(header.compressAlgorithm) == VMDK4_COMPRESSION_DEFLATE; | |
459 | extent->has_marker = le32_to_cpu(header.flags) & VMDK4_FLAG_MARKER; | |
b4b3ab14 FZ |
460 | ret = vmdk_init_tables(bs, extent); |
461 | if (ret) { | |
86c6b429 FZ |
462 | /* free extent allocated by vmdk_add_extent */ |
463 | vmdk_free_last_extent(bs); | |
b4b3ab14 | 464 | } |
b4b3ab14 FZ |
465 | return ret; |
466 | } | |
467 | ||
7fa60fa3 FZ |
468 | /* find an option value out of descriptor file */ |
469 | static int vmdk_parse_description(const char *desc, const char *opt_name, | |
470 | char *buf, int buf_size) | |
471 | { | |
472 | char *opt_pos, *opt_end; | |
473 | const char *end = desc + strlen(desc); | |
474 | ||
475 | opt_pos = strstr(desc, opt_name); | |
476 | if (!opt_pos) { | |
477 | return -1; | |
478 | } | |
479 | /* Skip "=\"" following opt_name */ | |
480 | opt_pos += strlen(opt_name) + 2; | |
481 | if (opt_pos >= end) { | |
482 | return -1; | |
483 | } | |
484 | opt_end = opt_pos; | |
485 | while (opt_end < end && *opt_end != '"') { | |
486 | opt_end++; | |
487 | } | |
488 | if (opt_end == end || buf_size < opt_end - opt_pos + 1) { | |
489 | return -1; | |
490 | } | |
491 | pstrcpy(buf, opt_end - opt_pos + 1, opt_pos); | |
492 | return 0; | |
493 | } | |
494 | ||
86c6b429 FZ |
495 | /* Open an extent file and append to bs array */ |
496 | static int vmdk_open_sparse(BlockDriverState *bs, | |
497 | BlockDriverState *file, | |
498 | int flags) | |
499 | { | |
500 | uint32_t magic; | |
501 | ||
502 | if (bdrv_pread(file, 0, &magic, sizeof(magic)) != sizeof(magic)) { | |
503 | return -EIO; | |
504 | } | |
505 | ||
506 | magic = be32_to_cpu(magic); | |
507 | switch (magic) { | |
508 | case VMDK3_MAGIC: | |
509 | return vmdk_open_vmdk3(bs, file, flags); | |
510 | break; | |
511 | case VMDK4_MAGIC: | |
512 | return vmdk_open_vmdk4(bs, file, flags); | |
513 | break; | |
514 | default: | |
515 | return -EINVAL; | |
516 | break; | |
517 | } | |
518 | } | |
519 | ||
7fa60fa3 FZ |
520 | static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, |
521 | const char *desc_file_path) | |
522 | { | |
523 | int ret; | |
524 | char access[11]; | |
525 | char type[11]; | |
526 | char fname[512]; | |
527 | const char *p = desc; | |
528 | int64_t sectors = 0; | |
529 | int64_t flat_offset; | |
86c6b429 FZ |
530 | char extent_path[PATH_MAX]; |
531 | BlockDriverState *extent_file; | |
7fa60fa3 FZ |
532 | |
533 | while (*p) { | |
534 | /* parse extent line: | |
535 | * RW [size in sectors] FLAT "file-name.vmdk" OFFSET | |
536 | * or | |
537 | * RW [size in sectors] SPARSE "file-name.vmdk" | |
538 | */ | |
539 | flat_offset = -1; | |
540 | ret = sscanf(p, "%10s %" SCNd64 " %10s %511s %" SCNd64, | |
541 | access, §ors, type, fname, &flat_offset); | |
542 | if (ret < 4 || strcmp(access, "RW")) { | |
543 | goto next_line; | |
544 | } else if (!strcmp(type, "FLAT")) { | |
545 | if (ret != 5 || flat_offset < 0) { | |
546 | return -EINVAL; | |
547 | } | |
548 | } else if (ret != 4) { | |
549 | return -EINVAL; | |
550 | } | |
551 | ||
552 | /* trim the quotation marks around */ | |
553 | if (fname[0] == '"') { | |
554 | memmove(fname, fname + 1, strlen(fname)); | |
555 | if (strlen(fname) <= 1 || fname[strlen(fname) - 1] != '"') { | |
556 | return -EINVAL; | |
557 | } | |
558 | fname[strlen(fname) - 1] = '\0'; | |
559 | } | |
560 | if (sectors <= 0 || | |
561 | (strcmp(type, "FLAT") && strcmp(type, "SPARSE")) || | |
562 | (strcmp(access, "RW"))) { | |
563 | goto next_line; | |
564 | } | |
565 | ||
86c6b429 FZ |
566 | path_combine(extent_path, sizeof(extent_path), |
567 | desc_file_path, fname); | |
568 | ret = bdrv_file_open(&extent_file, extent_path, bs->open_flags); | |
569 | if (ret) { | |
570 | return ret; | |
571 | } | |
572 | ||
7fa60fa3 FZ |
573 | /* save to extents array */ |
574 | if (!strcmp(type, "FLAT")) { | |
575 | /* FLAT extent */ | |
7fa60fa3 FZ |
576 | VmdkExtent *extent; |
577 | ||
7fa60fa3 FZ |
578 | extent = vmdk_add_extent(bs, extent_file, true, sectors, |
579 | 0, 0, 0, 0, sectors); | |
f16f509d | 580 | extent->flat_start_offset = flat_offset << 9; |
86c6b429 FZ |
581 | } else if (!strcmp(type, "SPARSE")) { |
582 | /* SPARSE extent */ | |
583 | ret = vmdk_open_sparse(bs, extent_file, bs->open_flags); | |
584 | if (ret) { | |
585 | bdrv_delete(extent_file); | |
586 | return ret; | |
587 | } | |
7fa60fa3 | 588 | } else { |
7fa60fa3 FZ |
589 | fprintf(stderr, |
590 | "VMDK: Not supported extent type \"%s\""".\n", type); | |
591 | return -ENOTSUP; | |
592 | } | |
593 | next_line: | |
594 | /* move to next line */ | |
595 | while (*p && *p != '\n') { | |
596 | p++; | |
597 | } | |
598 | p++; | |
599 | } | |
600 | return 0; | |
601 | } | |
602 | ||
f16f509d FZ |
603 | static int vmdk_open_desc_file(BlockDriverState *bs, int flags, |
604 | int64_t desc_offset) | |
7fa60fa3 FZ |
605 | { |
606 | int ret; | |
607 | char buf[2048]; | |
608 | char ct[128]; | |
609 | BDRVVmdkState *s = bs->opaque; | |
610 | ||
f16f509d | 611 | ret = bdrv_pread(bs->file, desc_offset, buf, sizeof(buf)); |
7fa60fa3 FZ |
612 | if (ret < 0) { |
613 | return ret; | |
614 | } | |
615 | buf[2047] = '\0'; | |
616 | if (vmdk_parse_description(buf, "createType", ct, sizeof(ct))) { | |
617 | return -EINVAL; | |
618 | } | |
6398de51 | 619 | if (strcmp(ct, "monolithicFlat") && |
86c6b429 | 620 | strcmp(ct, "twoGbMaxExtentSparse") && |
6398de51 | 621 | strcmp(ct, "twoGbMaxExtentFlat")) { |
7fa60fa3 FZ |
622 | fprintf(stderr, |
623 | "VMDK: Not supported image type \"%s\""".\n", ct); | |
624 | return -ENOTSUP; | |
625 | } | |
626 | s->desc_offset = 0; | |
627 | ret = vmdk_parse_extents(buf, bs, bs->file->filename); | |
628 | if (ret) { | |
b3c0bfb6 | 629 | vmdk_free_extents(bs); |
7fa60fa3 FZ |
630 | return ret; |
631 | } | |
632 | ||
633 | /* try to open parent images, if exist */ | |
588b65a3 PB |
634 | ret = vmdk_parent_open(bs); |
635 | if (ret) { | |
b3c0bfb6 | 636 | vmdk_free_extents(bs); |
588b65a3 | 637 | return ret; |
7fa60fa3 FZ |
638 | } |
639 | s->parent_cid = vmdk_read_cid(bs, 1); | |
640 | return 0; | |
641 | } | |
642 | ||
b4b3ab14 FZ |
643 | static int vmdk_open(BlockDriverState *bs, int flags) |
644 | { | |
86c6b429 FZ |
645 | int ret; |
646 | BDRVVmdkState *s = bs->opaque; | |
b4b3ab14 | 647 | |
86c6b429 FZ |
648 | if (vmdk_open_sparse(bs, bs->file, flags) == 0) { |
649 | s->desc_offset = 0x200; | |
650 | /* try to open parent images, if exist */ | |
651 | ret = vmdk_parent_open(bs); | |
652 | if (ret) { | |
653 | vmdk_free_extents(bs); | |
654 | return ret; | |
655 | } | |
656 | s->parent_cid = vmdk_read_cid(bs, 1); | |
657 | return 0; | |
b4b3ab14 | 658 | } else { |
f16f509d | 659 | return vmdk_open_desc_file(bs, flags, 0); |
b4b3ab14 | 660 | } |
ea2384d3 FB |
661 | } |
662 | ||
b3976d3c FZ |
663 | static int get_whole_cluster(BlockDriverState *bs, |
664 | VmdkExtent *extent, | |
665 | uint64_t cluster_offset, | |
666 | uint64_t offset, | |
667 | bool allocate) | |
5f4da8c0 | 668 | { |
b3976d3c FZ |
669 | /* 128 sectors * 512 bytes each = grain size 64KB */ |
670 | uint8_t whole_grain[extent->cluster_sectors * 512]; | |
5f4da8c0 | 671 | |
0e69c543 FZ |
672 | /* we will be here if it's first write on non-exist grain(cluster). |
673 | * try to read from parent image, if exist */ | |
b171271a | 674 | if (bs->backing_hd) { |
c336500d | 675 | int ret; |
5f4da8c0 | 676 | |
ae261c86 | 677 | if (!vmdk_is_cid_valid(bs)) { |
5f4da8c0 | 678 | return -1; |
ae261c86 | 679 | } |
5f4da8c0 | 680 | |
0e69c543 FZ |
681 | /* floor offset to cluster */ |
682 | offset -= offset % (extent->cluster_sectors * 512); | |
c336500d | 683 | ret = bdrv_read(bs->backing_hd, offset >> 9, whole_grain, |
b3976d3c | 684 | extent->cluster_sectors); |
c336500d KW |
685 | if (ret < 0) { |
686 | return -1; | |
687 | } | |
630530a6 | 688 | |
0e69c543 | 689 | /* Write grain only into the active image */ |
b3976d3c FZ |
690 | ret = bdrv_write(extent->file, cluster_offset, whole_grain, |
691 | extent->cluster_sectors); | |
c336500d KW |
692 | if (ret < 0) { |
693 | return -1; | |
630530a6 TS |
694 | } |
695 | } | |
696 | return 0; | |
697 | } | |
698 | ||
b3976d3c | 699 | static int vmdk_L2update(VmdkExtent *extent, VmdkMetaData *m_data) |
630530a6 | 700 | { |
630530a6 | 701 | /* update L2 table */ |
b3976d3c FZ |
702 | if (bdrv_pwrite_sync( |
703 | extent->file, | |
704 | ((int64_t)m_data->l2_offset * 512) | |
705 | + (m_data->l2_index * sizeof(m_data->offset)), | |
706 | &(m_data->offset), | |
707 | sizeof(m_data->offset) | |
708 | ) < 0) { | |
630530a6 | 709 | return -1; |
b3976d3c | 710 | } |
630530a6 | 711 | /* update backup L2 table */ |
b3976d3c FZ |
712 | if (extent->l1_backup_table_offset != 0) { |
713 | m_data->l2_offset = extent->l1_backup_table[m_data->l1_index]; | |
714 | if (bdrv_pwrite_sync( | |
715 | extent->file, | |
716 | ((int64_t)m_data->l2_offset * 512) | |
717 | + (m_data->l2_index * sizeof(m_data->offset)), | |
718 | &(m_data->offset), sizeof(m_data->offset) | |
719 | ) < 0) { | |
5f4da8c0 | 720 | return -1; |
b3976d3c | 721 | } |
5f4da8c0 | 722 | } |
630530a6 | 723 | |
5f4da8c0 TS |
724 | return 0; |
725 | } | |
726 | ||
91b85bd3 | 727 | static int get_cluster_offset(BlockDriverState *bs, |
b3976d3c FZ |
728 | VmdkExtent *extent, |
729 | VmdkMetaData *m_data, | |
91b85bd3 FZ |
730 | uint64_t offset, |
731 | int allocate, | |
732 | uint64_t *cluster_offset) | |
ea2384d3 | 733 | { |
ea2384d3 FB |
734 | unsigned int l1_index, l2_offset, l2_index; |
735 | int min_index, i, j; | |
630530a6 | 736 | uint32_t min_count, *l2_table, tmp = 0; |
630530a6 | 737 | |
ae261c86 | 738 | if (m_data) { |
630530a6 | 739 | m_data->valid = 0; |
ae261c86 | 740 | } |
91b85bd3 | 741 | if (extent->flat) { |
7fa60fa3 | 742 | *cluster_offset = extent->flat_start_offset; |
91b85bd3 FZ |
743 | return 0; |
744 | } | |
630530a6 | 745 | |
6398de51 | 746 | offset -= (extent->end_sector - extent->sectors) * SECTOR_SIZE; |
b3976d3c FZ |
747 | l1_index = (offset >> 9) / extent->l1_entry_sectors; |
748 | if (l1_index >= extent->l1_size) { | |
91b85bd3 | 749 | return -1; |
b3976d3c FZ |
750 | } |
751 | l2_offset = extent->l1_table[l1_index]; | |
752 | if (!l2_offset) { | |
91b85bd3 | 753 | return -1; |
b3976d3c | 754 | } |
b4b3ab14 | 755 | for (i = 0; i < L2_CACHE_SIZE; i++) { |
b3976d3c | 756 | if (l2_offset == extent->l2_cache_offsets[i]) { |
ea2384d3 | 757 | /* increment the hit count */ |
b3976d3c | 758 | if (++extent->l2_cache_counts[i] == 0xffffffff) { |
b4b3ab14 | 759 | for (j = 0; j < L2_CACHE_SIZE; j++) { |
b3976d3c | 760 | extent->l2_cache_counts[j] >>= 1; |
ea2384d3 FB |
761 | } |
762 | } | |
b3976d3c | 763 | l2_table = extent->l2_cache + (i * extent->l2_size); |
ea2384d3 FB |
764 | goto found; |
765 | } | |
766 | } | |
767 | /* not found: load a new entry in the least used one */ | |
768 | min_index = 0; | |
769 | min_count = 0xffffffff; | |
b4b3ab14 | 770 | for (i = 0; i < L2_CACHE_SIZE; i++) { |
b3976d3c FZ |
771 | if (extent->l2_cache_counts[i] < min_count) { |
772 | min_count = extent->l2_cache_counts[i]; | |
ea2384d3 FB |
773 | min_index = i; |
774 | } | |
775 | } | |
b3976d3c FZ |
776 | l2_table = extent->l2_cache + (min_index * extent->l2_size); |
777 | if (bdrv_pread( | |
778 | extent->file, | |
779 | (int64_t)l2_offset * 512, | |
780 | l2_table, | |
781 | extent->l2_size * sizeof(uint32_t) | |
782 | ) != extent->l2_size * sizeof(uint32_t)) { | |
91b85bd3 | 783 | return -1; |
b3976d3c | 784 | } |
5f4da8c0 | 785 | |
b3976d3c FZ |
786 | extent->l2_cache_offsets[min_index] = l2_offset; |
787 | extent->l2_cache_counts[min_index] = 1; | |
ea2384d3 | 788 | found: |
b3976d3c | 789 | l2_index = ((offset >> 9) / extent->cluster_sectors) % extent->l2_size; |
91b85bd3 | 790 | *cluster_offset = le32_to_cpu(l2_table[l2_index]); |
630530a6 | 791 | |
91b85bd3 FZ |
792 | if (!*cluster_offset) { |
793 | if (!allocate) { | |
794 | return -1; | |
795 | } | |
9949f97e | 796 | |
ae261c86 | 797 | /* Avoid the L2 tables update for the images that have snapshots. */ |
91b85bd3 | 798 | *cluster_offset = bdrv_getlength(extent->file); |
2b2c8c5d FZ |
799 | if (!extent->compressed) { |
800 | bdrv_truncate( | |
801 | extent->file, | |
802 | *cluster_offset + (extent->cluster_sectors << 9) | |
803 | ); | |
804 | } | |
9949f97e | 805 | |
91b85bd3 FZ |
806 | *cluster_offset >>= 9; |
807 | tmp = cpu_to_le32(*cluster_offset); | |
9949f97e | 808 | l2_table[l2_index] = tmp; |
630530a6 | 809 | |
630530a6 TS |
810 | /* First of all we write grain itself, to avoid race condition |
811 | * that may to corrupt the image. | |
812 | * This problem may occur because of insufficient space on host disk | |
813 | * or inappropriate VM shutdown. | |
814 | */ | |
b3976d3c | 815 | if (get_whole_cluster( |
ae261c86 | 816 | bs, extent, *cluster_offset, offset, allocate) == -1) { |
91b85bd3 | 817 | return -1; |
ae261c86 | 818 | } |
630530a6 TS |
819 | |
820 | if (m_data) { | |
821 | m_data->offset = tmp; | |
822 | m_data->l1_index = l1_index; | |
823 | m_data->l2_index = l2_index; | |
824 | m_data->l2_offset = l2_offset; | |
825 | m_data->valid = 1; | |
826 | } | |
ff1afc72 | 827 | } |
91b85bd3 FZ |
828 | *cluster_offset <<= 9; |
829 | return 0; | |
ea2384d3 FB |
830 | } |
831 | ||
b3976d3c FZ |
832 | static VmdkExtent *find_extent(BDRVVmdkState *s, |
833 | int64_t sector_num, VmdkExtent *start_hint) | |
834 | { | |
835 | VmdkExtent *extent = start_hint; | |
836 | ||
837 | if (!extent) { | |
838 | extent = &s->extents[0]; | |
839 | } | |
840 | while (extent < &s->extents[s->num_extents]) { | |
841 | if (sector_num < extent->end_sector) { | |
842 | return extent; | |
843 | } | |
844 | extent++; | |
845 | } | |
846 | return NULL; | |
847 | } | |
848 | ||
5fafdf24 | 849 | static int vmdk_is_allocated(BlockDriverState *bs, int64_t sector_num, |
ea2384d3 FB |
850 | int nb_sectors, int *pnum) |
851 | { | |
852 | BDRVVmdkState *s = bs->opaque; | |
b3976d3c FZ |
853 | int64_t index_in_cluster, n, ret; |
854 | uint64_t offset; | |
855 | VmdkExtent *extent; | |
856 | ||
857 | extent = find_extent(s, sector_num, NULL); | |
858 | if (!extent) { | |
859 | return 0; | |
860 | } | |
91b85bd3 FZ |
861 | ret = get_cluster_offset(bs, extent, NULL, |
862 | sector_num * 512, 0, &offset); | |
863 | /* get_cluster_offset returning 0 means success */ | |
864 | ret = !ret; | |
865 | ||
866 | index_in_cluster = sector_num % extent->cluster_sectors; | |
867 | n = extent->cluster_sectors - index_in_cluster; | |
ae261c86 | 868 | if (n > nb_sectors) { |
ea2384d3 | 869 | n = nb_sectors; |
ae261c86 | 870 | } |
ea2384d3 | 871 | *pnum = n; |
b3976d3c | 872 | return ret; |
ea2384d3 FB |
873 | } |
874 | ||
dd3f6ee2 FZ |
875 | static int vmdk_write_extent(VmdkExtent *extent, int64_t cluster_offset, |
876 | int64_t offset_in_cluster, const uint8_t *buf, | |
877 | int nb_sectors, int64_t sector_num) | |
878 | { | |
879 | int ret; | |
2b2c8c5d FZ |
880 | VmdkGrainMarker *data = NULL; |
881 | uLongf buf_len; | |
dd3f6ee2 FZ |
882 | const uint8_t *write_buf = buf; |
883 | int write_len = nb_sectors * 512; | |
884 | ||
2b2c8c5d FZ |
885 | if (extent->compressed) { |
886 | if (!extent->has_marker) { | |
887 | ret = -EINVAL; | |
888 | goto out; | |
889 | } | |
890 | buf_len = (extent->cluster_sectors << 9) * 2; | |
891 | data = g_malloc(buf_len + sizeof(VmdkGrainMarker)); | |
892 | if (compress(data->data, &buf_len, buf, nb_sectors << 9) != Z_OK || | |
893 | buf_len == 0) { | |
894 | ret = -EINVAL; | |
895 | goto out; | |
896 | } | |
897 | data->lba = sector_num; | |
898 | data->size = buf_len; | |
899 | write_buf = (uint8_t *)data; | |
900 | write_len = buf_len + sizeof(VmdkGrainMarker); | |
901 | } | |
dd3f6ee2 FZ |
902 | ret = bdrv_pwrite(extent->file, |
903 | cluster_offset + offset_in_cluster, | |
904 | write_buf, | |
905 | write_len); | |
906 | if (ret != write_len) { | |
907 | ret = ret < 0 ? ret : -EIO; | |
908 | goto out; | |
909 | } | |
910 | ret = 0; | |
911 | out: | |
2b2c8c5d | 912 | g_free(data); |
dd3f6ee2 FZ |
913 | return ret; |
914 | } | |
915 | ||
916 | static int vmdk_read_extent(VmdkExtent *extent, int64_t cluster_offset, | |
917 | int64_t offset_in_cluster, uint8_t *buf, | |
918 | int nb_sectors) | |
919 | { | |
920 | int ret; | |
2b2c8c5d FZ |
921 | int cluster_bytes, buf_bytes; |
922 | uint8_t *cluster_buf, *compressed_data; | |
923 | uint8_t *uncomp_buf; | |
924 | uint32_t data_len; | |
925 | VmdkGrainMarker *marker; | |
926 | uLongf buf_len; | |
927 | ||
dd3f6ee2 | 928 | |
2b2c8c5d FZ |
929 | if (!extent->compressed) { |
930 | ret = bdrv_pread(extent->file, | |
931 | cluster_offset + offset_in_cluster, | |
932 | buf, nb_sectors * 512); | |
933 | if (ret == nb_sectors * 512) { | |
934 | return 0; | |
935 | } else { | |
936 | return -EIO; | |
937 | } | |
938 | } | |
939 | cluster_bytes = extent->cluster_sectors * 512; | |
940 | /* Read two clusters in case GrainMarker + compressed data > one cluster */ | |
941 | buf_bytes = cluster_bytes * 2; | |
942 | cluster_buf = g_malloc(buf_bytes); | |
943 | uncomp_buf = g_malloc(cluster_bytes); | |
dd3f6ee2 | 944 | ret = bdrv_pread(extent->file, |
2b2c8c5d FZ |
945 | cluster_offset, |
946 | cluster_buf, buf_bytes); | |
947 | if (ret < 0) { | |
948 | goto out; | |
949 | } | |
950 | compressed_data = cluster_buf; | |
951 | buf_len = cluster_bytes; | |
952 | data_len = cluster_bytes; | |
953 | if (extent->has_marker) { | |
954 | marker = (VmdkGrainMarker *)cluster_buf; | |
955 | compressed_data = marker->data; | |
956 | data_len = le32_to_cpu(marker->size); | |
957 | } | |
958 | if (!data_len || data_len > buf_bytes) { | |
959 | ret = -EINVAL; | |
960 | goto out; | |
961 | } | |
962 | ret = uncompress(uncomp_buf, &buf_len, compressed_data, data_len); | |
963 | if (ret != Z_OK) { | |
964 | ret = -EINVAL; | |
965 | goto out; | |
966 | ||
967 | } | |
968 | if (offset_in_cluster < 0 || | |
969 | offset_in_cluster + nb_sectors * 512 > buf_len) { | |
970 | ret = -EINVAL; | |
971 | goto out; | |
dd3f6ee2 | 972 | } |
2b2c8c5d FZ |
973 | memcpy(buf, uncomp_buf + offset_in_cluster, nb_sectors * 512); |
974 | ret = 0; | |
975 | ||
976 | out: | |
977 | g_free(uncomp_buf); | |
978 | g_free(cluster_buf); | |
979 | return ret; | |
dd3f6ee2 FZ |
980 | } |
981 | ||
5fafdf24 | 982 | static int vmdk_read(BlockDriverState *bs, int64_t sector_num, |
ea2384d3 FB |
983 | uint8_t *buf, int nb_sectors) |
984 | { | |
985 | BDRVVmdkState *s = bs->opaque; | |
b3976d3c FZ |
986 | int ret; |
987 | uint64_t n, index_in_cluster; | |
988 | VmdkExtent *extent = NULL; | |
ea2384d3 | 989 | uint64_t cluster_offset; |
5f4da8c0 | 990 | |
ea2384d3 | 991 | while (nb_sectors > 0) { |
b3976d3c FZ |
992 | extent = find_extent(s, sector_num, extent); |
993 | if (!extent) { | |
994 | return -EIO; | |
995 | } | |
91b85bd3 FZ |
996 | ret = get_cluster_offset( |
997 | bs, extent, NULL, | |
998 | sector_num << 9, 0, &cluster_offset); | |
b3976d3c FZ |
999 | index_in_cluster = sector_num % extent->cluster_sectors; |
1000 | n = extent->cluster_sectors - index_in_cluster; | |
ae261c86 | 1001 | if (n > nb_sectors) { |
ea2384d3 | 1002 | n = nb_sectors; |
ae261c86 | 1003 | } |
91b85bd3 FZ |
1004 | if (ret) { |
1005 | /* if not allocated, try to read from parent image, if exist */ | |
b171271a | 1006 | if (bs->backing_hd) { |
ae261c86 | 1007 | if (!vmdk_is_cid_valid(bs)) { |
7fa60fa3 | 1008 | return -EINVAL; |
ae261c86 | 1009 | } |
b171271a | 1010 | ret = bdrv_read(bs->backing_hd, sector_num, buf, n); |
ae261c86 | 1011 | if (ret < 0) { |
7fa60fa3 | 1012 | return ret; |
ae261c86 | 1013 | } |
5f4da8c0 TS |
1014 | } else { |
1015 | memset(buf, 0, 512 * n); | |
1016 | } | |
ea2384d3 | 1017 | } else { |
dd3f6ee2 FZ |
1018 | ret = vmdk_read_extent(extent, |
1019 | cluster_offset, index_in_cluster * 512, | |
1020 | buf, n); | |
1021 | if (ret) { | |
7fa60fa3 FZ |
1022 | return ret; |
1023 | } | |
ea2384d3 FB |
1024 | } |
1025 | nb_sectors -= n; | |
1026 | sector_num += n; | |
1027 | buf += n * 512; | |
1028 | } | |
1029 | return 0; | |
1030 | } | |
1031 | ||
5fafdf24 | 1032 | static int vmdk_write(BlockDriverState *bs, int64_t sector_num, |
ea2384d3 FB |
1033 | const uint8_t *buf, int nb_sectors) |
1034 | { | |
ff1afc72 | 1035 | BDRVVmdkState *s = bs->opaque; |
b3976d3c | 1036 | VmdkExtent *extent = NULL; |
91b85bd3 | 1037 | int n, ret; |
b3976d3c | 1038 | int64_t index_in_cluster; |
ff1afc72 | 1039 | uint64_t cluster_offset; |
b3976d3c | 1040 | VmdkMetaData m_data; |
ff1afc72 | 1041 | |
630530a6 TS |
1042 | if (sector_num > bs->total_sectors) { |
1043 | fprintf(stderr, | |
92868412 JM |
1044 | "(VMDK) Wrong offset: sector_num=0x%" PRIx64 |
1045 | " total_sectors=0x%" PRIx64 "\n", | |
630530a6 | 1046 | sector_num, bs->total_sectors); |
7fa60fa3 | 1047 | return -EIO; |
630530a6 TS |
1048 | } |
1049 | ||
ff1afc72 | 1050 | while (nb_sectors > 0) { |
b3976d3c FZ |
1051 | extent = find_extent(s, sector_num, extent); |
1052 | if (!extent) { | |
1053 | return -EIO; | |
1054 | } | |
91b85bd3 | 1055 | ret = get_cluster_offset( |
b3976d3c FZ |
1056 | bs, |
1057 | extent, | |
1058 | &m_data, | |
2b2c8c5d | 1059 | sector_num << 9, !extent->compressed, |
91b85bd3 | 1060 | &cluster_offset); |
2b2c8c5d FZ |
1061 | if (extent->compressed) { |
1062 | if (ret == 0) { | |
1063 | /* Refuse write to allocated cluster for streamOptimized */ | |
1064 | fprintf(stderr, | |
1065 | "VMDK: can't write to allocated cluster" | |
1066 | " for streamOptimized\n"); | |
1067 | return -EIO; | |
1068 | } else { | |
1069 | /* allocate */ | |
1070 | ret = get_cluster_offset( | |
1071 | bs, | |
1072 | extent, | |
1073 | &m_data, | |
1074 | sector_num << 9, 1, | |
1075 | &cluster_offset); | |
1076 | } | |
1077 | } | |
91b85bd3 FZ |
1078 | if (ret) { |
1079 | return -EINVAL; | |
b3976d3c FZ |
1080 | } |
1081 | index_in_cluster = sector_num % extent->cluster_sectors; | |
1082 | n = extent->cluster_sectors - index_in_cluster; | |
1083 | if (n > nb_sectors) { | |
1084 | n = nb_sectors; | |
1085 | } | |
630530a6 | 1086 | |
dd3f6ee2 FZ |
1087 | ret = vmdk_write_extent(extent, |
1088 | cluster_offset, index_in_cluster * 512, | |
1089 | buf, n, sector_num); | |
1090 | if (ret) { | |
7fa60fa3 | 1091 | return ret; |
b3976d3c | 1092 | } |
630530a6 TS |
1093 | if (m_data.valid) { |
1094 | /* update L2 tables */ | |
b3976d3c | 1095 | if (vmdk_L2update(extent, &m_data) == -1) { |
7fa60fa3 | 1096 | return -EIO; |
b3976d3c | 1097 | } |
630530a6 | 1098 | } |
ff1afc72 FB |
1099 | nb_sectors -= n; |
1100 | sector_num += n; | |
1101 | buf += n * 512; | |
5f4da8c0 | 1102 | |
ae261c86 FZ |
1103 | /* update CID on the first write every time the virtual disk is |
1104 | * opened */ | |
69b4d86d | 1105 | if (!s->cid_updated) { |
5f4da8c0 | 1106 | vmdk_write_cid(bs, time(NULL)); |
69b4d86d | 1107 | s->cid_updated = true; |
5f4da8c0 | 1108 | } |
ff1afc72 FB |
1109 | } |
1110 | return 0; | |
ea2384d3 FB |
1111 | } |
1112 | ||
f66fd6c3 | 1113 | |
6c031aac FZ |
1114 | static int vmdk_create_extent(const char *filename, int64_t filesize, |
1115 | bool flat, bool compress) | |
8979b227 | 1116 | { |
f66fd6c3 FZ |
1117 | int ret, i; |
1118 | int fd = 0; | |
8979b227 FB |
1119 | VMDK4Header header; |
1120 | uint32_t tmp, magic, grains, gd_size, gt_size, gt_count; | |
0e7e1989 | 1121 | |
f66fd6c3 FZ |
1122 | fd = open( |
1123 | filename, | |
1124 | O_WRONLY | O_CREAT | O_TRUNC | O_BINARY | O_LARGEFILE, | |
1125 | 0644); | |
1126 | if (fd < 0) { | |
1127 | return -errno; | |
0e7e1989 | 1128 | } |
f66fd6c3 FZ |
1129 | if (flat) { |
1130 | ret = ftruncate(fd, filesize); | |
1131 | if (ret < 0) { | |
1132 | ret = -errno; | |
1133 | } | |
1134 | goto exit; | |
5f4da8c0 | 1135 | } |
8979b227 FB |
1136 | magic = cpu_to_be32(VMDK4_MAGIC); |
1137 | memset(&header, 0, sizeof(header)); | |
16372ff0 | 1138 | header.version = 1; |
6c031aac FZ |
1139 | header.flags = |
1140 | 3 | (compress ? VMDK4_FLAG_COMPRESS | VMDK4_FLAG_MARKER : 0); | |
1141 | header.compressAlgorithm = compress ? VMDK4_COMPRESSION_DEFLATE : 0; | |
f66fd6c3 | 1142 | header.capacity = filesize / 512; |
16372ff0 AG |
1143 | header.granularity = 128; |
1144 | header.num_gtes_per_gte = 512; | |
8979b227 | 1145 | |
f66fd6c3 | 1146 | grains = (filesize / 512 + header.granularity - 1) / header.granularity; |
8979b227 | 1147 | gt_size = ((header.num_gtes_per_gte * sizeof(uint32_t)) + 511) >> 9; |
f66fd6c3 FZ |
1148 | gt_count = |
1149 | (grains + header.num_gtes_per_gte - 1) / header.num_gtes_per_gte; | |
8979b227 FB |
1150 | gd_size = (gt_count * sizeof(uint32_t) + 511) >> 9; |
1151 | ||
1152 | header.desc_offset = 1; | |
1153 | header.desc_size = 20; | |
1154 | header.rgd_offset = header.desc_offset + header.desc_size; | |
1155 | header.gd_offset = header.rgd_offset + gd_size + (gt_size * gt_count); | |
1156 | header.grain_offset = | |
1157 | ((header.gd_offset + gd_size + (gt_size * gt_count) + | |
1158 | header.granularity - 1) / header.granularity) * | |
1159 | header.granularity; | |
16372ff0 AG |
1160 | /* swap endianness for all header fields */ |
1161 | header.version = cpu_to_le32(header.version); | |
1162 | header.flags = cpu_to_le32(header.flags); | |
1163 | header.capacity = cpu_to_le64(header.capacity); | |
1164 | header.granularity = cpu_to_le64(header.granularity); | |
1165 | header.num_gtes_per_gte = cpu_to_le32(header.num_gtes_per_gte); | |
8979b227 FB |
1166 | header.desc_offset = cpu_to_le64(header.desc_offset); |
1167 | header.desc_size = cpu_to_le64(header.desc_size); | |
1168 | header.rgd_offset = cpu_to_le64(header.rgd_offset); | |
1169 | header.gd_offset = cpu_to_le64(header.gd_offset); | |
1170 | header.grain_offset = cpu_to_le64(header.grain_offset); | |
6c031aac | 1171 | header.compressAlgorithm = cpu_to_le16(header.compressAlgorithm); |
8979b227 FB |
1172 | |
1173 | header.check_bytes[0] = 0xa; | |
1174 | header.check_bytes[1] = 0x20; | |
1175 | header.check_bytes[2] = 0xd; | |
1176 | header.check_bytes[3] = 0xa; | |
3b46e624 TS |
1177 | |
1178 | /* write all the data */ | |
1640366c KS |
1179 | ret = qemu_write_full(fd, &magic, sizeof(magic)); |
1180 | if (ret != sizeof(magic)) { | |
b781cce5 | 1181 | ret = -errno; |
1640366c KS |
1182 | goto exit; |
1183 | } | |
1184 | ret = qemu_write_full(fd, &header, sizeof(header)); | |
1185 | if (ret != sizeof(header)) { | |
b781cce5 | 1186 | ret = -errno; |
1640366c KS |
1187 | goto exit; |
1188 | } | |
8979b227 | 1189 | |
16372ff0 | 1190 | ret = ftruncate(fd, le64_to_cpu(header.grain_offset) << 9); |
1640366c | 1191 | if (ret < 0) { |
b781cce5 | 1192 | ret = -errno; |
1640366c KS |
1193 | goto exit; |
1194 | } | |
8979b227 FB |
1195 | |
1196 | /* write grain directory */ | |
1197 | lseek(fd, le64_to_cpu(header.rgd_offset) << 9, SEEK_SET); | |
16372ff0 | 1198 | for (i = 0, tmp = le64_to_cpu(header.rgd_offset) + gd_size; |
1640366c KS |
1199 | i < gt_count; i++, tmp += gt_size) { |
1200 | ret = qemu_write_full(fd, &tmp, sizeof(tmp)); | |
1201 | if (ret != sizeof(tmp)) { | |
b781cce5 | 1202 | ret = -errno; |
1640366c KS |
1203 | goto exit; |
1204 | } | |
1205 | } | |
3b46e624 | 1206 | |
8979b227 FB |
1207 | /* write backup grain directory */ |
1208 | lseek(fd, le64_to_cpu(header.gd_offset) << 9, SEEK_SET); | |
16372ff0 | 1209 | for (i = 0, tmp = le64_to_cpu(header.gd_offset) + gd_size; |
1640366c KS |
1210 | i < gt_count; i++, tmp += gt_size) { |
1211 | ret = qemu_write_full(fd, &tmp, sizeof(tmp)); | |
1212 | if (ret != sizeof(tmp)) { | |
b781cce5 | 1213 | ret = -errno; |
1640366c KS |
1214 | goto exit; |
1215 | } | |
1216 | } | |
8979b227 | 1217 | |
f66fd6c3 FZ |
1218 | ret = 0; |
1219 | exit: | |
1220 | close(fd); | |
1221 | return ret; | |
1222 | } | |
1223 | ||
1224 | static int filename_decompose(const char *filename, char *path, char *prefix, | |
1225 | char *postfix, size_t buf_len) | |
1226 | { | |
1227 | const char *p, *q; | |
1228 | ||
1229 | if (filename == NULL || !strlen(filename)) { | |
1230 | fprintf(stderr, "Vmdk: no filename provided.\n"); | |
1231 | return -1; | |
1232 | } | |
1233 | p = strrchr(filename, '/'); | |
1234 | if (p == NULL) { | |
1235 | p = strrchr(filename, '\\'); | |
1236 | } | |
1237 | if (p == NULL) { | |
1238 | p = strrchr(filename, ':'); | |
1239 | } | |
1240 | if (p != NULL) { | |
1241 | p++; | |
1242 | if (p - filename >= buf_len) { | |
1243 | return -1; | |
1244 | } | |
1245 | pstrcpy(path, p - filename + 1, filename); | |
1246 | } else { | |
1247 | p = filename; | |
1248 | path[0] = '\0'; | |
1249 | } | |
1250 | q = strrchr(p, '.'); | |
1251 | if (q == NULL) { | |
1252 | pstrcpy(prefix, buf_len, p); | |
1253 | postfix[0] = '\0'; | |
1254 | } else { | |
1255 | if (q - p >= buf_len) { | |
1256 | return -1; | |
1257 | } | |
1258 | pstrcpy(prefix, q - p + 1, p); | |
1259 | pstrcpy(postfix, buf_len, q); | |
1260 | } | |
1261 | return 0; | |
1262 | } | |
1263 | ||
1264 | static int relative_path(char *dest, int dest_size, | |
1265 | const char *base, const char *target) | |
1266 | { | |
1267 | int i = 0; | |
1268 | int n = 0; | |
1269 | const char *p, *q; | |
1270 | #ifdef _WIN32 | |
1271 | const char *sep = "\\"; | |
1272 | #else | |
1273 | const char *sep = "/"; | |
1274 | #endif | |
1275 | ||
1276 | if (!(dest && base && target)) { | |
1277 | return -1; | |
1278 | } | |
1279 | if (path_is_absolute(target)) { | |
1280 | dest[dest_size - 1] = '\0'; | |
1281 | strncpy(dest, target, dest_size - 1); | |
1282 | return 0; | |
1283 | } | |
1284 | while (base[i] == target[i]) { | |
1285 | i++; | |
1286 | } | |
1287 | p = &base[i]; | |
1288 | q = &target[i]; | |
1289 | while (*p) { | |
1290 | if (*p == *sep) { | |
1291 | n++; | |
1292 | } | |
1293 | p++; | |
1294 | } | |
1295 | dest[0] = '\0'; | |
1296 | for (; n; n--) { | |
1297 | pstrcat(dest, dest_size, ".."); | |
1298 | pstrcat(dest, dest_size, sep); | |
1299 | } | |
1300 | pstrcat(dest, dest_size, q); | |
1301 | return 0; | |
1302 | } | |
1303 | ||
1304 | static int vmdk_create(const char *filename, QEMUOptionParameter *options) | |
1305 | { | |
1306 | int fd, idx = 0; | |
1307 | char desc[BUF_SIZE]; | |
1308 | int64_t total_size = 0, filesize; | |
1309 | const char *backing_file = NULL; | |
1310 | const char *fmt = NULL; | |
1311 | int flags = 0; | |
1312 | int ret = 0; | |
6c031aac | 1313 | bool flat, split, compress; |
f66fd6c3 FZ |
1314 | char ext_desc_lines[BUF_SIZE] = ""; |
1315 | char path[PATH_MAX], prefix[PATH_MAX], postfix[PATH_MAX]; | |
1316 | const int64_t split_size = 0x80000000; /* VMDK has constant split size */ | |
1317 | const char *desc_extent_line; | |
1318 | char parent_desc_line[BUF_SIZE] = ""; | |
1319 | uint32_t parent_cid = 0xffffffff; | |
1320 | const char desc_template[] = | |
1321 | "# Disk DescriptorFile\n" | |
1322 | "version=1\n" | |
1323 | "CID=%x\n" | |
1324 | "parentCID=%x\n" | |
1325 | "createType=\"%s\"\n" | |
1326 | "%s" | |
1327 | "\n" | |
1328 | "# Extent description\n" | |
1329 | "%s" | |
1330 | "\n" | |
1331 | "# The Disk Data Base\n" | |
1332 | "#DDB\n" | |
1333 | "\n" | |
1334 | "ddb.virtualHWVersion = \"%d\"\n" | |
1335 | "ddb.geometry.cylinders = \"%" PRId64 "\"\n" | |
1336 | "ddb.geometry.heads = \"16\"\n" | |
1337 | "ddb.geometry.sectors = \"63\"\n" | |
1338 | "ddb.adapterType = \"ide\"\n"; | |
1339 | ||
1340 | if (filename_decompose(filename, path, prefix, postfix, PATH_MAX)) { | |
1341 | return -EINVAL; | |
1342 | } | |
1343 | /* Read out options */ | |
1344 | while (options && options->name) { | |
1345 | if (!strcmp(options->name, BLOCK_OPT_SIZE)) { | |
1346 | total_size = options->value.n; | |
1347 | } else if (!strcmp(options->name, BLOCK_OPT_BACKING_FILE)) { | |
1348 | backing_file = options->value.s; | |
1349 | } else if (!strcmp(options->name, BLOCK_OPT_COMPAT6)) { | |
1350 | flags |= options->value.n ? BLOCK_FLAG_COMPAT6 : 0; | |
1351 | } else if (!strcmp(options->name, BLOCK_OPT_SUBFMT)) { | |
1352 | fmt = options->value.s; | |
1353 | } | |
1354 | options++; | |
1355 | } | |
1356 | if (!fmt) { | |
1357 | /* Default format to monolithicSparse */ | |
1358 | fmt = "monolithicSparse"; | |
1359 | } else if (strcmp(fmt, "monolithicFlat") && | |
1360 | strcmp(fmt, "monolithicSparse") && | |
1361 | strcmp(fmt, "twoGbMaxExtentSparse") && | |
6c031aac FZ |
1362 | strcmp(fmt, "twoGbMaxExtentFlat") && |
1363 | strcmp(fmt, "streamOptimized")) { | |
f66fd6c3 FZ |
1364 | fprintf(stderr, "VMDK: Unknown subformat: %s\n", fmt); |
1365 | return -EINVAL; | |
1366 | } | |
1367 | split = !(strcmp(fmt, "twoGbMaxExtentFlat") && | |
1368 | strcmp(fmt, "twoGbMaxExtentSparse")); | |
1369 | flat = !(strcmp(fmt, "monolithicFlat") && | |
1370 | strcmp(fmt, "twoGbMaxExtentFlat")); | |
6c031aac | 1371 | compress = !strcmp(fmt, "streamOptimized"); |
f66fd6c3 FZ |
1372 | if (flat) { |
1373 | desc_extent_line = "RW %lld FLAT \"%s\" 0\n"; | |
1374 | } else { | |
1375 | desc_extent_line = "RW %lld SPARSE \"%s\"\n"; | |
1376 | } | |
1377 | if (flat && backing_file) { | |
1378 | /* not supporting backing file for flat image */ | |
1379 | return -ENOTSUP; | |
1380 | } | |
1381 | if (backing_file) { | |
1382 | char parent_filename[PATH_MAX]; | |
1383 | BlockDriverState *bs = bdrv_new(""); | |
1384 | ret = bdrv_open(bs, backing_file, 0, NULL); | |
1385 | if (ret != 0) { | |
1386 | bdrv_delete(bs); | |
1387 | return ret; | |
1388 | } | |
1389 | if (strcmp(bs->drv->format_name, "vmdk")) { | |
1390 | bdrv_delete(bs); | |
1391 | return -EINVAL; | |
1392 | } | |
1393 | filesize = bdrv_getlength(bs); | |
1394 | parent_cid = vmdk_read_cid(bs, 0); | |
1395 | bdrv_delete(bs); | |
1396 | relative_path(parent_filename, sizeof(parent_filename), | |
1397 | filename, backing_file); | |
1398 | snprintf(parent_desc_line, sizeof(parent_desc_line), | |
1399 | "parentFileNameHint=\"%s\"", parent_filename); | |
1400 | } | |
1401 | ||
1402 | /* Create extents */ | |
1403 | filesize = total_size; | |
1404 | while (filesize > 0) { | |
1405 | char desc_line[BUF_SIZE]; | |
1406 | char ext_filename[PATH_MAX]; | |
1407 | char desc_filename[PATH_MAX]; | |
1408 | int64_t size = filesize; | |
1409 | ||
1410 | if (split && size > split_size) { | |
1411 | size = split_size; | |
1412 | } | |
1413 | if (split) { | |
1414 | snprintf(desc_filename, sizeof(desc_filename), "%s-%c%03d%s", | |
1415 | prefix, flat ? 'f' : 's', ++idx, postfix); | |
1416 | } else if (flat) { | |
1417 | snprintf(desc_filename, sizeof(desc_filename), "%s-flat%s", | |
1418 | prefix, postfix); | |
1419 | } else { | |
1420 | snprintf(desc_filename, sizeof(desc_filename), "%s%s", | |
1421 | prefix, postfix); | |
1422 | } | |
1423 | snprintf(ext_filename, sizeof(ext_filename), "%s%s", | |
1424 | path, desc_filename); | |
1425 | ||
6c031aac | 1426 | if (vmdk_create_extent(ext_filename, size, flat, compress)) { |
f66fd6c3 FZ |
1427 | return -EINVAL; |
1428 | } | |
1429 | filesize -= size; | |
1430 | ||
1431 | /* Format description line */ | |
1432 | snprintf(desc_line, sizeof(desc_line), | |
1433 | desc_extent_line, size / 512, desc_filename); | |
1434 | pstrcat(ext_desc_lines, sizeof(ext_desc_lines), desc_line); | |
1435 | } | |
1436 | /* generate descriptor file */ | |
1437 | snprintf(desc, sizeof(desc), desc_template, | |
1438 | (unsigned int)time(NULL), | |
1439 | parent_cid, | |
1440 | fmt, | |
1441 | parent_desc_line, | |
1442 | ext_desc_lines, | |
1443 | (flags & BLOCK_FLAG_COMPAT6 ? 6 : 4), | |
1444 | total_size / (int64_t)(63 * 16 * 512)); | |
1445 | if (split || flat) { | |
1446 | fd = open( | |
1447 | filename, | |
1448 | O_WRONLY | O_CREAT | O_TRUNC | O_BINARY | O_LARGEFILE, | |
1449 | 0644); | |
1450 | } else { | |
1451 | fd = open( | |
1452 | filename, | |
1453 | O_WRONLY | O_BINARY | O_LARGEFILE, | |
1454 | 0644); | |
1455 | } | |
1456 | if (fd < 0) { | |
1457 | return -errno; | |
1458 | } | |
1459 | /* the descriptor offset = 0x200 */ | |
1460 | if (!split && !flat && 0x200 != lseek(fd, 0x200, SEEK_SET)) { | |
1461 | ret = -errno; | |
1462 | goto exit; | |
1463 | } | |
1640366c KS |
1464 | ret = qemu_write_full(fd, desc, strlen(desc)); |
1465 | if (ret != strlen(desc)) { | |
b781cce5 | 1466 | ret = -errno; |
1640366c KS |
1467 | goto exit; |
1468 | } | |
1640366c KS |
1469 | ret = 0; |
1470 | exit: | |
8979b227 | 1471 | close(fd); |
1640366c | 1472 | return ret; |
8979b227 FB |
1473 | } |
1474 | ||
e2731add | 1475 | static void vmdk_close(BlockDriverState *bs) |
ea2384d3 | 1476 | { |
b3976d3c | 1477 | vmdk_free_extents(bs); |
ea2384d3 FB |
1478 | } |
1479 | ||
205ef796 | 1480 | static int vmdk_flush(BlockDriverState *bs) |
7a6cba61 | 1481 | { |
333c574d FZ |
1482 | int i, ret, err; |
1483 | BDRVVmdkState *s = bs->opaque; | |
1484 | ||
1485 | ret = bdrv_flush(bs->file); | |
1486 | for (i = 0; i < s->num_extents; i++) { | |
1487 | err = bdrv_flush(s->extents[i].file); | |
1488 | if (err < 0) { | |
1489 | ret = err; | |
1490 | } | |
1491 | } | |
1492 | return ret; | |
7a6cba61 PB |
1493 | } |
1494 | ||
4a1d5e1f FZ |
1495 | static int64_t vmdk_get_allocated_file_size(BlockDriverState *bs) |
1496 | { | |
1497 | int i; | |
1498 | int64_t ret = 0; | |
1499 | int64_t r; | |
1500 | BDRVVmdkState *s = bs->opaque; | |
1501 | ||
1502 | ret = bdrv_get_allocated_file_size(bs->file); | |
1503 | if (ret < 0) { | |
1504 | return ret; | |
1505 | } | |
1506 | for (i = 0; i < s->num_extents; i++) { | |
1507 | if (s->extents[i].file == bs->file) { | |
1508 | continue; | |
1509 | } | |
1510 | r = bdrv_get_allocated_file_size(s->extents[i].file); | |
1511 | if (r < 0) { | |
1512 | return r; | |
1513 | } | |
1514 | ret += r; | |
1515 | } | |
1516 | return ret; | |
1517 | } | |
0e7e1989 KW |
1518 | |
1519 | static QEMUOptionParameter vmdk_create_options[] = { | |
db08adf5 KW |
1520 | { |
1521 | .name = BLOCK_OPT_SIZE, | |
1522 | .type = OPT_SIZE, | |
1523 | .help = "Virtual disk size" | |
1524 | }, | |
1525 | { | |
1526 | .name = BLOCK_OPT_BACKING_FILE, | |
1527 | .type = OPT_STRING, | |
1528 | .help = "File name of a base image" | |
1529 | }, | |
1530 | { | |
1531 | .name = BLOCK_OPT_COMPAT6, | |
1532 | .type = OPT_FLAG, | |
1533 | .help = "VMDK version 6 image" | |
1534 | }, | |
f66fd6c3 FZ |
1535 | { |
1536 | .name = BLOCK_OPT_SUBFMT, | |
1537 | .type = OPT_STRING, | |
1538 | .help = | |
1539 | "VMDK flat extent format, can be one of " | |
6c031aac | 1540 | "{monolithicSparse (default) | monolithicFlat | twoGbMaxExtentSparse | twoGbMaxExtentFlat | streamOptimized} " |
f66fd6c3 | 1541 | }, |
0e7e1989 KW |
1542 | { NULL } |
1543 | }; | |
1544 | ||
5efa9d5a | 1545 | static BlockDriver bdrv_vmdk = { |
ae261c86 FZ |
1546 | .format_name = "vmdk", |
1547 | .instance_size = sizeof(BDRVVmdkState), | |
1548 | .bdrv_probe = vmdk_probe, | |
6511ef77 | 1549 | .bdrv_open = vmdk_open, |
ae261c86 FZ |
1550 | .bdrv_read = vmdk_read, |
1551 | .bdrv_write = vmdk_write, | |
1552 | .bdrv_close = vmdk_close, | |
1553 | .bdrv_create = vmdk_create, | |
1554 | .bdrv_flush = vmdk_flush, | |
1555 | .bdrv_is_allocated = vmdk_is_allocated, | |
4a1d5e1f | 1556 | .bdrv_get_allocated_file_size = vmdk_get_allocated_file_size, |
0e7e1989 KW |
1557 | |
1558 | .create_options = vmdk_create_options, | |
ea2384d3 | 1559 | }; |
5efa9d5a AL |
1560 | |
1561 | static void bdrv_vmdk_init(void) | |
1562 | { | |
1563 | bdrv_register(&bdrv_vmdk); | |
1564 | } | |
1565 | ||
1566 | block_init(bdrv_vmdk_init); |