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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 | |
80c71a24 | 26 | #include "qemu/osdep.h" |
da34e65c | 27 | #include "qapi/error.h" |
737e150e | 28 | #include "block/block_int.h" |
c4bea169 | 29 | #include "sysemu/block-backend.h" |
abc521a9 | 30 | #include "qapi/qmp/qdict.h" |
cc7a8ea7 | 31 | #include "qapi/qmp/qerror.h" |
d49b6836 | 32 | #include "qemu/error-report.h" |
1de7afc9 | 33 | #include "qemu/module.h" |
922a01a0 | 34 | #include "qemu/option.h" |
58369e22 | 35 | #include "qemu/bswap.h" |
795c40b8 | 36 | #include "migration/blocker.h" |
f348b6d1 | 37 | #include "qemu/cutils.h" |
2923d34f | 38 | #include <zlib.h> |
ea2384d3 | 39 | |
ea2384d3 FB |
40 | #define VMDK3_MAGIC (('C' << 24) | ('O' << 16) | ('W' << 8) | 'D') |
41 | #define VMDK4_MAGIC (('K' << 24) | ('D' << 16) | ('M' << 8) | 'V') | |
432bb170 | 42 | #define VMDK4_COMPRESSION_DEFLATE 1 |
95b0aa42 | 43 | #define VMDK4_FLAG_NL_DETECT (1 << 0) |
bb45ded9 | 44 | #define VMDK4_FLAG_RGD (1 << 1) |
14ead646 FZ |
45 | /* Zeroed-grain enable bit */ |
46 | #define VMDK4_FLAG_ZERO_GRAIN (1 << 2) | |
432bb170 FZ |
47 | #define VMDK4_FLAG_COMPRESS (1 << 16) |
48 | #define VMDK4_FLAG_MARKER (1 << 17) | |
65bd155c | 49 | #define VMDK4_GD_AT_END 0xffffffffffffffffULL |
ea2384d3 | 50 | |
a77672ea YCL |
51 | #define VMDK_EXTENT_MAX_SECTORS (1ULL << 32) |
52 | ||
14ead646 | 53 | #define VMDK_GTE_ZEROED 0x1 |
65f74725 FZ |
54 | |
55 | /* VMDK internal error codes */ | |
56 | #define VMDK_OK 0 | |
57 | #define VMDK_ERROR (-1) | |
58 | /* Cluster not allocated */ | |
59 | #define VMDK_UNALLOC (-2) | |
60 | #define VMDK_ZEROED (-3) | |
61 | ||
69e0b6df FZ |
62 | #define BLOCK_OPT_ZEROED_GRAIN "zeroed_grain" |
63 | ||
ea2384d3 FB |
64 | typedef struct { |
65 | uint32_t version; | |
66 | uint32_t flags; | |
67 | uint32_t disk_sectors; | |
68 | uint32_t granularity; | |
69 | uint32_t l1dir_offset; | |
70 | uint32_t l1dir_size; | |
71 | uint32_t file_sectors; | |
72 | uint32_t cylinders; | |
73 | uint32_t heads; | |
74 | uint32_t sectors_per_track; | |
5d8caa54 | 75 | } QEMU_PACKED VMDK3Header; |
ea2384d3 FB |
76 | |
77 | typedef struct { | |
78 | uint32_t version; | |
79 | uint32_t flags; | |
e98768d4 FZ |
80 | uint64_t capacity; |
81 | uint64_t granularity; | |
82 | uint64_t desc_offset; | |
83 | uint64_t desc_size; | |
ca8804ce FZ |
84 | /* Number of GrainTableEntries per GrainTable */ |
85 | uint32_t num_gtes_per_gt; | |
e98768d4 FZ |
86 | uint64_t rgd_offset; |
87 | uint64_t gd_offset; | |
88 | uint64_t grain_offset; | |
ea2384d3 FB |
89 | char filler[1]; |
90 | char check_bytes[4]; | |
432bb170 | 91 | uint16_t compressAlgorithm; |
541dc0d4 | 92 | } QEMU_PACKED VMDK4Header; |
ea2384d3 FB |
93 | |
94 | #define L2_CACHE_SIZE 16 | |
95 | ||
b3976d3c | 96 | typedef struct VmdkExtent { |
24bc15d1 | 97 | BdrvChild *file; |
b3976d3c | 98 | bool flat; |
432bb170 FZ |
99 | bool compressed; |
100 | bool has_marker; | |
14ead646 FZ |
101 | bool has_zero_grain; |
102 | int version; | |
b3976d3c FZ |
103 | int64_t sectors; |
104 | int64_t end_sector; | |
7fa60fa3 | 105 | int64_t flat_start_offset; |
ea2384d3 | 106 | int64_t l1_table_offset; |
ff1afc72 | 107 | int64_t l1_backup_table_offset; |
ea2384d3 | 108 | uint32_t *l1_table; |
ff1afc72 | 109 | uint32_t *l1_backup_table; |
ea2384d3 FB |
110 | unsigned int l1_size; |
111 | uint32_t l1_entry_sectors; | |
112 | ||
113 | unsigned int l2_size; | |
114 | uint32_t *l2_cache; | |
115 | uint32_t l2_cache_offsets[L2_CACHE_SIZE]; | |
116 | uint32_t l2_cache_counts[L2_CACHE_SIZE]; | |
117 | ||
301c7d38 | 118 | int64_t cluster_sectors; |
c6ac36e1 | 119 | int64_t next_cluster_sector; |
f4c129a3 | 120 | char *type; |
b3976d3c FZ |
121 | } VmdkExtent; |
122 | ||
123 | typedef struct BDRVVmdkState { | |
848c66e8 | 124 | CoMutex lock; |
e98768d4 | 125 | uint64_t desc_offset; |
69b4d86d | 126 | bool cid_updated; |
c338b6ad | 127 | bool cid_checked; |
f4c129a3 | 128 | uint32_t cid; |
5f4da8c0 | 129 | uint32_t parent_cid; |
b3976d3c FZ |
130 | int num_extents; |
131 | /* Extent array with num_extents entries, ascend ordered by address */ | |
132 | VmdkExtent *extents; | |
2bc3166c | 133 | Error *migration_blocker; |
f4c129a3 | 134 | char *create_type; |
ea2384d3 FB |
135 | } BDRVVmdkState; |
136 | ||
630530a6 | 137 | typedef struct VmdkMetaData { |
630530a6 TS |
138 | unsigned int l1_index; |
139 | unsigned int l2_index; | |
140 | unsigned int l2_offset; | |
141 | int valid; | |
cdeaf1f1 | 142 | uint32_t *l2_cache_entry; |
630530a6 TS |
143 | } VmdkMetaData; |
144 | ||
432bb170 FZ |
145 | typedef struct VmdkGrainMarker { |
146 | uint64_t lba; | |
147 | uint32_t size; | |
148 | uint8_t data[0]; | |
5d8caa54 | 149 | } QEMU_PACKED VmdkGrainMarker; |
432bb170 | 150 | |
65bd155c KW |
151 | enum { |
152 | MARKER_END_OF_STREAM = 0, | |
153 | MARKER_GRAIN_TABLE = 1, | |
154 | MARKER_GRAIN_DIRECTORY = 2, | |
155 | MARKER_FOOTER = 3, | |
156 | }; | |
157 | ||
ea2384d3 FB |
158 | static int vmdk_probe(const uint8_t *buf, int buf_size, const char *filename) |
159 | { | |
160 | uint32_t magic; | |
161 | ||
ae261c86 | 162 | if (buf_size < 4) { |
ea2384d3 | 163 | return 0; |
ae261c86 | 164 | } |
ea2384d3 FB |
165 | magic = be32_to_cpu(*(uint32_t *)buf); |
166 | if (magic == VMDK3_MAGIC || | |
01fc99d6 | 167 | magic == VMDK4_MAGIC) { |
ea2384d3 | 168 | return 100; |
01fc99d6 FZ |
169 | } else { |
170 | const char *p = (const char *)buf; | |
171 | const char *end = p + buf_size; | |
172 | while (p < end) { | |
173 | if (*p == '#') { | |
174 | /* skip comment line */ | |
175 | while (p < end && *p != '\n') { | |
176 | p++; | |
177 | } | |
178 | p++; | |
179 | continue; | |
180 | } | |
181 | if (*p == ' ') { | |
182 | while (p < end && *p == ' ') { | |
183 | p++; | |
184 | } | |
185 | /* skip '\r' if windows line endings used. */ | |
186 | if (p < end && *p == '\r') { | |
187 | p++; | |
188 | } | |
189 | /* only accept blank lines before 'version=' line */ | |
190 | if (p == end || *p != '\n') { | |
191 | return 0; | |
192 | } | |
193 | p++; | |
194 | continue; | |
195 | } | |
196 | if (end - p >= strlen("version=X\n")) { | |
197 | if (strncmp("version=1\n", p, strlen("version=1\n")) == 0 || | |
198 | strncmp("version=2\n", p, strlen("version=2\n")) == 0) { | |
199 | return 100; | |
200 | } | |
201 | } | |
202 | if (end - p >= strlen("version=X\r\n")) { | |
203 | if (strncmp("version=1\r\n", p, strlen("version=1\r\n")) == 0 || | |
204 | strncmp("version=2\r\n", p, strlen("version=2\r\n")) == 0) { | |
205 | return 100; | |
206 | } | |
207 | } | |
208 | return 0; | |
209 | } | |
ea2384d3 | 210 | return 0; |
01fc99d6 | 211 | } |
ea2384d3 FB |
212 | } |
213 | ||
3b46e624 | 214 | #define SECTOR_SIZE 512 |
f66fd6c3 FZ |
215 | #define DESC_SIZE (20 * SECTOR_SIZE) /* 20 sectors of 512 bytes each */ |
216 | #define BUF_SIZE 4096 | |
217 | #define HEADER_SIZE 512 /* first sector of 512 bytes */ | |
5f4da8c0 | 218 | |
b3976d3c FZ |
219 | static void vmdk_free_extents(BlockDriverState *bs) |
220 | { | |
221 | int i; | |
222 | BDRVVmdkState *s = bs->opaque; | |
b3c0bfb6 | 223 | VmdkExtent *e; |
b3976d3c FZ |
224 | |
225 | for (i = 0; i < s->num_extents; i++) { | |
b3c0bfb6 FZ |
226 | e = &s->extents[i]; |
227 | g_free(e->l1_table); | |
228 | g_free(e->l2_cache); | |
229 | g_free(e->l1_backup_table); | |
f4c129a3 | 230 | g_free(e->type); |
9a4f4c31 | 231 | if (e->file != bs->file) { |
24bc15d1 | 232 | bdrv_unref_child(bs, e->file); |
b3c0bfb6 | 233 | } |
b3976d3c | 234 | } |
7267c094 | 235 | g_free(s->extents); |
b3976d3c FZ |
236 | } |
237 | ||
86c6b429 FZ |
238 | static void vmdk_free_last_extent(BlockDriverState *bs) |
239 | { | |
240 | BDRVVmdkState *s = bs->opaque; | |
241 | ||
242 | if (s->num_extents == 0) { | |
243 | return; | |
244 | } | |
245 | s->num_extents--; | |
5839e53b | 246 | s->extents = g_renew(VmdkExtent, s->extents, s->num_extents); |
86c6b429 FZ |
247 | } |
248 | ||
9877860e PM |
249 | /* Return -ve errno, or 0 on success and write CID into *pcid. */ |
250 | static int vmdk_read_cid(BlockDriverState *bs, int parent, uint32_t *pcid) | |
ea2384d3 | 251 | { |
5997c210 | 252 | char *desc; |
9877860e | 253 | uint32_t cid; |
7ccfb2eb | 254 | const char *p_name, *cid_str; |
5f4da8c0 | 255 | size_t cid_str_size; |
e1da9b24 | 256 | BDRVVmdkState *s = bs->opaque; |
99f1835d | 257 | int ret; |
5f4da8c0 | 258 | |
5997c210 | 259 | desc = g_malloc0(DESC_SIZE); |
cf2ab8fc | 260 | ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); |
99f1835d | 261 | if (ret < 0) { |
9877860e | 262 | goto out; |
e1da9b24 | 263 | } |
5f4da8c0 TS |
264 | |
265 | if (parent) { | |
266 | cid_str = "parentCID"; | |
267 | cid_str_size = sizeof("parentCID"); | |
268 | } else { | |
269 | cid_str = "CID"; | |
270 | cid_str_size = sizeof("CID"); | |
271 | } | |
272 | ||
93897b9f | 273 | desc[DESC_SIZE - 1] = '\0'; |
ae261c86 | 274 | p_name = strstr(desc, cid_str); |
9877860e PM |
275 | if (p_name == NULL) { |
276 | ret = -EINVAL; | |
277 | goto out; | |
5f4da8c0 | 278 | } |
9877860e PM |
279 | p_name += cid_str_size; |
280 | if (sscanf(p_name, "%" SCNx32, &cid) != 1) { | |
281 | ret = -EINVAL; | |
282 | goto out; | |
283 | } | |
284 | *pcid = cid; | |
285 | ret = 0; | |
5f4da8c0 | 286 | |
9877860e | 287 | out: |
5997c210 | 288 | g_free(desc); |
9877860e | 289 | return ret; |
5f4da8c0 TS |
290 | } |
291 | ||
292 | static int vmdk_write_cid(BlockDriverState *bs, uint32_t cid) | |
293 | { | |
965415eb | 294 | char *desc, *tmp_desc; |
5f4da8c0 | 295 | char *p_name, *tmp_str; |
e1da9b24 | 296 | BDRVVmdkState *s = bs->opaque; |
965415eb | 297 | int ret = 0; |
5f4da8c0 | 298 | |
965415eb FZ |
299 | desc = g_malloc0(DESC_SIZE); |
300 | tmp_desc = g_malloc0(DESC_SIZE); | |
cf2ab8fc | 301 | ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); |
99f1835d | 302 | if (ret < 0) { |
965415eb | 303 | goto out; |
e1da9b24 | 304 | } |
5f4da8c0 | 305 | |
93897b9f | 306 | desc[DESC_SIZE - 1] = '\0'; |
ae261c86 | 307 | tmp_str = strstr(desc, "parentCID"); |
93897b9f | 308 | if (tmp_str == NULL) { |
965415eb FZ |
309 | ret = -EINVAL; |
310 | goto out; | |
93897b9f KW |
311 | } |
312 | ||
965415eb | 313 | pstrcpy(tmp_desc, DESC_SIZE, tmp_str); |
ae261c86 FZ |
314 | p_name = strstr(desc, "CID"); |
315 | if (p_name != NULL) { | |
5f4da8c0 | 316 | p_name += sizeof("CID"); |
965415eb FZ |
317 | snprintf(p_name, DESC_SIZE - (p_name - desc), "%" PRIx32 "\n", cid); |
318 | pstrcat(desc, DESC_SIZE, tmp_desc); | |
5f4da8c0 TS |
319 | } |
320 | ||
d9ca2ea2 | 321 | ret = bdrv_pwrite_sync(bs->file, s->desc_offset, desc, DESC_SIZE); |
99f1835d | 322 | |
965415eb FZ |
323 | out: |
324 | g_free(desc); | |
325 | g_free(tmp_desc); | |
326 | return ret; | |
5f4da8c0 TS |
327 | } |
328 | ||
329 | static int vmdk_is_cid_valid(BlockDriverState *bs) | |
330 | { | |
5f4da8c0 | 331 | BDRVVmdkState *s = bs->opaque; |
5f4da8c0 TS |
332 | uint32_t cur_pcid; |
333 | ||
760e0063 KW |
334 | if (!s->cid_checked && bs->backing) { |
335 | BlockDriverState *p_bs = bs->backing->bs; | |
336 | ||
439e89fc HR |
337 | if (strcmp(p_bs->drv->format_name, "vmdk")) { |
338 | /* Backing file is not in vmdk format, so it does not have | |
339 | * a CID, which makes the overlay's parent CID invalid */ | |
340 | return 0; | |
341 | } | |
342 | ||
9877860e PM |
343 | if (vmdk_read_cid(p_bs, 0, &cur_pcid) != 0) { |
344 | /* read failure: report as not valid */ | |
345 | return 0; | |
346 | } | |
ae261c86 FZ |
347 | if (s->parent_cid != cur_pcid) { |
348 | /* CID not valid */ | |
5f4da8c0 | 349 | return 0; |
ae261c86 | 350 | } |
5f4da8c0 | 351 | } |
c338b6ad | 352 | s->cid_checked = true; |
ae261c86 | 353 | /* CID valid */ |
5f4da8c0 TS |
354 | return 1; |
355 | } | |
356 | ||
67251a31 | 357 | /* We have nothing to do for VMDK reopen, stubs just return success */ |
3897575f JC |
358 | static int vmdk_reopen_prepare(BDRVReopenState *state, |
359 | BlockReopenQueue *queue, Error **errp) | |
360 | { | |
3897575f JC |
361 | assert(state != NULL); |
362 | assert(state->bs != NULL); | |
67251a31 | 363 | return 0; |
3897575f JC |
364 | } |
365 | ||
9949f97e | 366 | static int vmdk_parent_open(BlockDriverState *bs) |
5f4da8c0 | 367 | { |
5fafdf24 | 368 | char *p_name; |
71968dbf | 369 | char *desc; |
e1da9b24 | 370 | BDRVVmdkState *s = bs->opaque; |
588b65a3 | 371 | int ret; |
5f4da8c0 | 372 | |
71968dbf | 373 | desc = g_malloc0(DESC_SIZE + 1); |
cf2ab8fc | 374 | ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); |
588b65a3 | 375 | if (ret < 0) { |
71968dbf | 376 | goto out; |
e1da9b24 | 377 | } |
71968dbf | 378 | ret = 0; |
5f4da8c0 | 379 | |
ae261c86 FZ |
380 | p_name = strstr(desc, "parentFileNameHint"); |
381 | if (p_name != NULL) { | |
5f4da8c0 | 382 | char *end_name; |
5f4da8c0 TS |
383 | |
384 | p_name += sizeof("parentFileNameHint") + 1; | |
ae261c86 FZ |
385 | end_name = strchr(p_name, '\"'); |
386 | if (end_name == NULL) { | |
71968dbf FZ |
387 | ret = -EINVAL; |
388 | goto out; | |
ae261c86 | 389 | } |
998c2019 | 390 | if ((end_name - p_name) > sizeof(bs->auto_backing_file) - 1) { |
71968dbf FZ |
391 | ret = -EINVAL; |
392 | goto out; | |
ae261c86 | 393 | } |
3b46e624 | 394 | |
998c2019 HR |
395 | pstrcpy(bs->auto_backing_file, end_name - p_name + 1, p_name); |
396 | pstrcpy(bs->backing_file, sizeof(bs->backing_file), | |
397 | bs->auto_backing_file); | |
ff1afc72 | 398 | } |
5f4da8c0 | 399 | |
71968dbf FZ |
400 | out: |
401 | g_free(desc); | |
402 | return ret; | |
5f4da8c0 TS |
403 | } |
404 | ||
b3976d3c FZ |
405 | /* Create and append extent to the extent array. Return the added VmdkExtent |
406 | * address. return NULL if allocation failed. */ | |
8aa1331c | 407 | static int vmdk_add_extent(BlockDriverState *bs, |
24bc15d1 | 408 | BdrvChild *file, bool flat, int64_t sectors, |
b3976d3c FZ |
409 | int64_t l1_offset, int64_t l1_backup_offset, |
410 | uint32_t l1_size, | |
8aa1331c | 411 | int l2_size, uint64_t cluster_sectors, |
4823970b FZ |
412 | VmdkExtent **new_extent, |
413 | Error **errp) | |
b3976d3c FZ |
414 | { |
415 | VmdkExtent *extent; | |
416 | BDRVVmdkState *s = bs->opaque; | |
0a156f7c | 417 | int64_t nb_sectors; |
b3976d3c | 418 | |
8aa1331c FZ |
419 | if (cluster_sectors > 0x200000) { |
420 | /* 0x200000 * 512Bytes = 1GB for one cluster is unrealistic */ | |
4823970b FZ |
421 | error_setg(errp, "Invalid granularity, image may be corrupt"); |
422 | return -EFBIG; | |
8aa1331c | 423 | } |
b0651b8c FZ |
424 | if (l1_size > 512 * 1024 * 1024) { |
425 | /* Although with big capacity and small l1_entry_sectors, we can get a | |
426 | * big l1_size, we don't want unbounded value to allocate the table. | |
427 | * Limit it to 512M, which is 16PB for default cluster and L2 table | |
428 | * size */ | |
4823970b | 429 | error_setg(errp, "L1 size too big"); |
b0651b8c FZ |
430 | return -EFBIG; |
431 | } | |
8aa1331c | 432 | |
24bc15d1 | 433 | nb_sectors = bdrv_nb_sectors(file->bs); |
0a156f7c MA |
434 | if (nb_sectors < 0) { |
435 | return nb_sectors; | |
c6ac36e1 FZ |
436 | } |
437 | ||
5839e53b | 438 | s->extents = g_renew(VmdkExtent, s->extents, s->num_extents + 1); |
b3976d3c FZ |
439 | extent = &s->extents[s->num_extents]; |
440 | s->num_extents++; | |
441 | ||
442 | memset(extent, 0, sizeof(VmdkExtent)); | |
443 | extent->file = file; | |
444 | extent->flat = flat; | |
445 | extent->sectors = sectors; | |
446 | extent->l1_table_offset = l1_offset; | |
447 | extent->l1_backup_table_offset = l1_backup_offset; | |
448 | extent->l1_size = l1_size; | |
449 | extent->l1_entry_sectors = l2_size * cluster_sectors; | |
450 | extent->l2_size = l2_size; | |
301c7d38 | 451 | extent->cluster_sectors = flat ? sectors : cluster_sectors; |
0a156f7c | 452 | extent->next_cluster_sector = ROUND_UP(nb_sectors, cluster_sectors); |
b3976d3c FZ |
453 | |
454 | if (s->num_extents > 1) { | |
455 | extent->end_sector = (*(extent - 1)).end_sector + extent->sectors; | |
456 | } else { | |
457 | extent->end_sector = extent->sectors; | |
458 | } | |
459 | bs->total_sectors = extent->end_sector; | |
8aa1331c FZ |
460 | if (new_extent) { |
461 | *new_extent = extent; | |
462 | } | |
463 | return 0; | |
b3976d3c FZ |
464 | } |
465 | ||
4823970b FZ |
466 | static int vmdk_init_tables(BlockDriverState *bs, VmdkExtent *extent, |
467 | Error **errp) | |
5f4da8c0 | 468 | { |
b4b3ab14 | 469 | int ret; |
13c4941c FZ |
470 | size_t l1_size; |
471 | int i; | |
5f4da8c0 | 472 | |
ea2384d3 | 473 | /* read the L1 table */ |
b3976d3c | 474 | l1_size = extent->l1_size * sizeof(uint32_t); |
d6e59931 KW |
475 | extent->l1_table = g_try_malloc(l1_size); |
476 | if (l1_size && extent->l1_table == NULL) { | |
477 | return -ENOMEM; | |
478 | } | |
479 | ||
cf2ab8fc | 480 | ret = bdrv_pread(extent->file, |
4823970b FZ |
481 | extent->l1_table_offset, |
482 | extent->l1_table, | |
483 | l1_size); | |
b4b3ab14 | 484 | if (ret < 0) { |
f30c66ba | 485 | bdrv_refresh_filename(extent->file->bs); |
4823970b FZ |
486 | error_setg_errno(errp, -ret, |
487 | "Could not read l1 table from extent '%s'", | |
24bc15d1 | 488 | extent->file->bs->filename); |
b4b3ab14 | 489 | goto fail_l1; |
b3976d3c FZ |
490 | } |
491 | for (i = 0; i < extent->l1_size; i++) { | |
492 | le32_to_cpus(&extent->l1_table[i]); | |
ea2384d3 FB |
493 | } |
494 | ||
b3976d3c | 495 | if (extent->l1_backup_table_offset) { |
d6e59931 KW |
496 | extent->l1_backup_table = g_try_malloc(l1_size); |
497 | if (l1_size && extent->l1_backup_table == NULL) { | |
498 | ret = -ENOMEM; | |
499 | goto fail_l1; | |
500 | } | |
cf2ab8fc | 501 | ret = bdrv_pread(extent->file, |
4823970b FZ |
502 | extent->l1_backup_table_offset, |
503 | extent->l1_backup_table, | |
504 | l1_size); | |
b4b3ab14 | 505 | if (ret < 0) { |
f30c66ba | 506 | bdrv_refresh_filename(extent->file->bs); |
4823970b FZ |
507 | error_setg_errno(errp, -ret, |
508 | "Could not read l1 backup table from extent '%s'", | |
24bc15d1 | 509 | extent->file->bs->filename); |
b4b3ab14 | 510 | goto fail_l1b; |
b3976d3c FZ |
511 | } |
512 | for (i = 0; i < extent->l1_size; i++) { | |
513 | le32_to_cpus(&extent->l1_backup_table[i]); | |
ff1afc72 FB |
514 | } |
515 | } | |
516 | ||
b3976d3c | 517 | extent->l2_cache = |
5839e53b | 518 | g_new(uint32_t, extent->l2_size * L2_CACHE_SIZE); |
ea2384d3 | 519 | return 0; |
b4b3ab14 | 520 | fail_l1b: |
7267c094 | 521 | g_free(extent->l1_backup_table); |
b4b3ab14 | 522 | fail_l1: |
7267c094 | 523 | g_free(extent->l1_table); |
b4b3ab14 FZ |
524 | return ret; |
525 | } | |
526 | ||
daac8fdc | 527 | static int vmdk_open_vmfs_sparse(BlockDriverState *bs, |
24bc15d1 | 528 | BdrvChild *file, |
4823970b | 529 | int flags, Error **errp) |
b4b3ab14 FZ |
530 | { |
531 | int ret; | |
532 | uint32_t magic; | |
533 | VMDK3Header header; | |
534 | VmdkExtent *extent; | |
535 | ||
cf2ab8fc | 536 | ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header)); |
b4b3ab14 | 537 | if (ret < 0) { |
f30c66ba | 538 | bdrv_refresh_filename(file->bs); |
4823970b FZ |
539 | error_setg_errno(errp, -ret, |
540 | "Could not read header from file '%s'", | |
24bc15d1 | 541 | file->bs->filename); |
86c6b429 | 542 | return ret; |
b4b3ab14 | 543 | } |
f6b61e54 FZ |
544 | ret = vmdk_add_extent(bs, file, false, |
545 | le32_to_cpu(header.disk_sectors), | |
7237aecd | 546 | (int64_t)le32_to_cpu(header.l1dir_offset) << 9, |
f6b61e54 FZ |
547 | 0, |
548 | le32_to_cpu(header.l1dir_size), | |
549 | 4096, | |
550 | le32_to_cpu(header.granularity), | |
4823970b FZ |
551 | &extent, |
552 | errp); | |
8aa1331c FZ |
553 | if (ret < 0) { |
554 | return ret; | |
555 | } | |
4823970b | 556 | ret = vmdk_init_tables(bs, extent, errp); |
b4b3ab14 | 557 | if (ret) { |
86c6b429 FZ |
558 | /* free extent allocated by vmdk_add_extent */ |
559 | vmdk_free_last_extent(bs); | |
b4b3ab14 | 560 | } |
b4b3ab14 FZ |
561 | return ret; |
562 | } | |
563 | ||
d1833ef5 | 564 | static int vmdk_open_desc_file(BlockDriverState *bs, int flags, char *buf, |
a6468367 | 565 | QDict *options, Error **errp); |
f16f509d | 566 | |
cf2ab8fc | 567 | static char *vmdk_read_desc(BdrvChild *file, uint64_t desc_offset, Error **errp) |
a8842e6d PB |
568 | { |
569 | int64_t size; | |
570 | char *buf; | |
571 | int ret; | |
572 | ||
cf2ab8fc | 573 | size = bdrv_getlength(file->bs); |
a8842e6d PB |
574 | if (size < 0) { |
575 | error_setg_errno(errp, -size, "Could not access file"); | |
576 | return NULL; | |
577 | } | |
578 | ||
03c3359d FZ |
579 | if (size < 4) { |
580 | /* Both descriptor file and sparse image must be much larger than 4 | |
581 | * bytes, also callers of vmdk_read_desc want to compare the first 4 | |
582 | * bytes with VMDK4_MAGIC, let's error out if less is read. */ | |
583 | error_setg(errp, "File is too small, not a valid image"); | |
584 | return NULL; | |
585 | } | |
586 | ||
73b7bcad FZ |
587 | size = MIN(size, (1 << 20) - 1); /* avoid unbounded allocation */ |
588 | buf = g_malloc(size + 1); | |
a8842e6d PB |
589 | |
590 | ret = bdrv_pread(file, desc_offset, buf, size); | |
591 | if (ret < 0) { | |
592 | error_setg_errno(errp, -ret, "Could not read from file"); | |
593 | g_free(buf); | |
594 | return NULL; | |
595 | } | |
73b7bcad | 596 | buf[ret] = 0; |
a8842e6d PB |
597 | |
598 | return buf; | |
599 | } | |
600 | ||
86c6b429 | 601 | static int vmdk_open_vmdk4(BlockDriverState *bs, |
24bc15d1 | 602 | BdrvChild *file, |
a6468367 | 603 | int flags, QDict *options, Error **errp) |
b4b3ab14 FZ |
604 | { |
605 | int ret; | |
606 | uint32_t magic; | |
607 | uint32_t l1_size, l1_entry_sectors; | |
608 | VMDK4Header header; | |
b4b3ab14 | 609 | VmdkExtent *extent; |
f4c129a3 | 610 | BDRVVmdkState *s = bs->opaque; |
bb45ded9 | 611 | int64_t l1_backup_offset = 0; |
3db1d98a | 612 | bool compressed; |
b4b3ab14 | 613 | |
cf2ab8fc | 614 | ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header)); |
b4b3ab14 | 615 | if (ret < 0) { |
f30c66ba | 616 | bdrv_refresh_filename(file->bs); |
4823970b FZ |
617 | error_setg_errno(errp, -ret, |
618 | "Could not read header from file '%s'", | |
24bc15d1 | 619 | file->bs->filename); |
89ac8480 | 620 | return -EINVAL; |
b4b3ab14 | 621 | } |
5a394b9e | 622 | if (header.capacity == 0) { |
e98768d4 | 623 | uint64_t desc_offset = le64_to_cpu(header.desc_offset); |
5a394b9e | 624 | if (desc_offset) { |
cf2ab8fc | 625 | char *buf = vmdk_read_desc(file, desc_offset << 9, errp); |
d1833ef5 PB |
626 | if (!buf) { |
627 | return -EINVAL; | |
628 | } | |
a6468367 | 629 | ret = vmdk_open_desc_file(bs, flags, buf, options, errp); |
d1833ef5 PB |
630 | g_free(buf); |
631 | return ret; | |
5a394b9e | 632 | } |
f16f509d | 633 | } |
65bd155c | 634 | |
f4c129a3 FZ |
635 | if (!s->create_type) { |
636 | s->create_type = g_strdup("monolithicSparse"); | |
637 | } | |
638 | ||
65bd155c KW |
639 | if (le64_to_cpu(header.gd_offset) == VMDK4_GD_AT_END) { |
640 | /* | |
641 | * The footer takes precedence over the header, so read it in. The | |
642 | * footer starts at offset -1024 from the end: One sector for the | |
643 | * footer, and another one for the end-of-stream marker. | |
644 | */ | |
645 | struct { | |
646 | struct { | |
647 | uint64_t val; | |
648 | uint32_t size; | |
649 | uint32_t type; | |
650 | uint8_t pad[512 - 16]; | |
651 | } QEMU_PACKED footer_marker; | |
652 | ||
653 | uint32_t magic; | |
654 | VMDK4Header header; | |
655 | uint8_t pad[512 - 4 - sizeof(VMDK4Header)]; | |
656 | ||
657 | struct { | |
658 | uint64_t val; | |
659 | uint32_t size; | |
660 | uint32_t type; | |
661 | uint8_t pad[512 - 16]; | |
662 | } QEMU_PACKED eos_marker; | |
663 | } QEMU_PACKED footer; | |
664 | ||
cf2ab8fc | 665 | ret = bdrv_pread(file, |
9a4f4c31 | 666 | bs->file->bs->total_sectors * 512 - 1536, |
65bd155c KW |
667 | &footer, sizeof(footer)); |
668 | if (ret < 0) { | |
d899d2e2 | 669 | error_setg_errno(errp, -ret, "Failed to read footer"); |
65bd155c KW |
670 | return ret; |
671 | } | |
672 | ||
673 | /* Some sanity checks for the footer */ | |
674 | if (be32_to_cpu(footer.magic) != VMDK4_MAGIC || | |
675 | le32_to_cpu(footer.footer_marker.size) != 0 || | |
676 | le32_to_cpu(footer.footer_marker.type) != MARKER_FOOTER || | |
677 | le64_to_cpu(footer.eos_marker.val) != 0 || | |
678 | le32_to_cpu(footer.eos_marker.size) != 0 || | |
679 | le32_to_cpu(footer.eos_marker.type) != MARKER_END_OF_STREAM) | |
680 | { | |
d899d2e2 | 681 | error_setg(errp, "Invalid footer"); |
65bd155c KW |
682 | return -EINVAL; |
683 | } | |
684 | ||
685 | header = footer.header; | |
686 | } | |
687 | ||
3db1d98a FZ |
688 | compressed = |
689 | le16_to_cpu(header.compressAlgorithm) == VMDK4_COMPRESSION_DEFLATE; | |
509d39aa | 690 | if (le32_to_cpu(header.version) > 3) { |
a55448b3 HR |
691 | error_setg(errp, "Unsupported VMDK version %" PRIu32, |
692 | le32_to_cpu(header.version)); | |
96c51eb5 | 693 | return -ENOTSUP; |
3db1d98a FZ |
694 | } else if (le32_to_cpu(header.version) == 3 && (flags & BDRV_O_RDWR) && |
695 | !compressed) { | |
509d39aa FZ |
696 | /* VMware KB 2064959 explains that version 3 added support for |
697 | * persistent changed block tracking (CBT), and backup software can | |
698 | * read it as version=1 if it doesn't care about the changed area | |
699 | * information. So we are safe to enable read only. */ | |
700 | error_setg(errp, "VMDK version 3 must be read only"); | |
701 | return -EINVAL; | |
96c51eb5 FZ |
702 | } |
703 | ||
ca8804ce | 704 | if (le32_to_cpu(header.num_gtes_per_gt) > 512) { |
89ac8480 | 705 | error_setg(errp, "L2 table size too big"); |
f8ce0403 FZ |
706 | return -EINVAL; |
707 | } | |
708 | ||
ca8804ce | 709 | l1_entry_sectors = le32_to_cpu(header.num_gtes_per_gt) |
b4b3ab14 | 710 | * le64_to_cpu(header.granularity); |
75d12341 | 711 | if (l1_entry_sectors == 0) { |
d899d2e2 | 712 | error_setg(errp, "L1 entry size is invalid"); |
86c6b429 FZ |
713 | return -EINVAL; |
714 | } | |
b4b3ab14 FZ |
715 | l1_size = (le64_to_cpu(header.capacity) + l1_entry_sectors - 1) |
716 | / l1_entry_sectors; | |
bb45ded9 FZ |
717 | if (le32_to_cpu(header.flags) & VMDK4_FLAG_RGD) { |
718 | l1_backup_offset = le64_to_cpu(header.rgd_offset) << 9; | |
719 | } | |
24bc15d1 | 720 | if (bdrv_nb_sectors(file->bs) < le64_to_cpu(header.grain_offset)) { |
4ab9dab5 FZ |
721 | error_setg(errp, "File truncated, expecting at least %" PRId64 " bytes", |
722 | (int64_t)(le64_to_cpu(header.grain_offset) | |
723 | * BDRV_SECTOR_SIZE)); | |
34ceed81 FZ |
724 | return -EINVAL; |
725 | } | |
726 | ||
8aa1331c | 727 | ret = vmdk_add_extent(bs, file, false, |
b4b3ab14 FZ |
728 | le64_to_cpu(header.capacity), |
729 | le64_to_cpu(header.gd_offset) << 9, | |
bb45ded9 | 730 | l1_backup_offset, |
b4b3ab14 | 731 | l1_size, |
ca8804ce | 732 | le32_to_cpu(header.num_gtes_per_gt), |
8aa1331c | 733 | le64_to_cpu(header.granularity), |
4823970b FZ |
734 | &extent, |
735 | errp); | |
8aa1331c FZ |
736 | if (ret < 0) { |
737 | return ret; | |
738 | } | |
432bb170 FZ |
739 | extent->compressed = |
740 | le16_to_cpu(header.compressAlgorithm) == VMDK4_COMPRESSION_DEFLATE; | |
d8a7b061 FZ |
741 | if (extent->compressed) { |
742 | g_free(s->create_type); | |
743 | s->create_type = g_strdup("streamOptimized"); | |
744 | } | |
432bb170 | 745 | extent->has_marker = le32_to_cpu(header.flags) & VMDK4_FLAG_MARKER; |
14ead646 FZ |
746 | extent->version = le32_to_cpu(header.version); |
747 | extent->has_zero_grain = le32_to_cpu(header.flags) & VMDK4_FLAG_ZERO_GRAIN; | |
4823970b | 748 | ret = vmdk_init_tables(bs, extent, errp); |
b4b3ab14 | 749 | if (ret) { |
86c6b429 FZ |
750 | /* free extent allocated by vmdk_add_extent */ |
751 | vmdk_free_last_extent(bs); | |
b4b3ab14 | 752 | } |
b4b3ab14 FZ |
753 | return ret; |
754 | } | |
755 | ||
7fa60fa3 FZ |
756 | /* find an option value out of descriptor file */ |
757 | static int vmdk_parse_description(const char *desc, const char *opt_name, | |
758 | char *buf, int buf_size) | |
759 | { | |
760 | char *opt_pos, *opt_end; | |
761 | const char *end = desc + strlen(desc); | |
762 | ||
763 | opt_pos = strstr(desc, opt_name); | |
764 | if (!opt_pos) { | |
65f74725 | 765 | return VMDK_ERROR; |
7fa60fa3 FZ |
766 | } |
767 | /* Skip "=\"" following opt_name */ | |
768 | opt_pos += strlen(opt_name) + 2; | |
769 | if (opt_pos >= end) { | |
65f74725 | 770 | return VMDK_ERROR; |
7fa60fa3 FZ |
771 | } |
772 | opt_end = opt_pos; | |
773 | while (opt_end < end && *opt_end != '"') { | |
774 | opt_end++; | |
775 | } | |
776 | if (opt_end == end || buf_size < opt_end - opt_pos + 1) { | |
65f74725 | 777 | return VMDK_ERROR; |
7fa60fa3 FZ |
778 | } |
779 | pstrcpy(buf, opt_end - opt_pos + 1, opt_pos); | |
65f74725 | 780 | return VMDK_OK; |
7fa60fa3 FZ |
781 | } |
782 | ||
86c6b429 | 783 | /* Open an extent file and append to bs array */ |
24bc15d1 | 784 | static int vmdk_open_sparse(BlockDriverState *bs, BdrvChild *file, int flags, |
a6468367 | 785 | char *buf, QDict *options, Error **errp) |
86c6b429 FZ |
786 | { |
787 | uint32_t magic; | |
788 | ||
d1833ef5 | 789 | magic = ldl_be_p(buf); |
86c6b429 FZ |
790 | switch (magic) { |
791 | case VMDK3_MAGIC: | |
4823970b | 792 | return vmdk_open_vmfs_sparse(bs, file, flags, errp); |
86c6b429 FZ |
793 | break; |
794 | case VMDK4_MAGIC: | |
a6468367 | 795 | return vmdk_open_vmdk4(bs, file, flags, options, errp); |
86c6b429 FZ |
796 | break; |
797 | default: | |
76abe407 PB |
798 | error_setg(errp, "Image not in VMDK format"); |
799 | return -EINVAL; | |
86c6b429 FZ |
800 | break; |
801 | } | |
802 | } | |
803 | ||
e4937694 MA |
804 | static const char *next_line(const char *s) |
805 | { | |
806 | while (*s) { | |
807 | if (*s == '\n') { | |
808 | return s + 1; | |
809 | } | |
810 | s++; | |
811 | } | |
812 | return s; | |
813 | } | |
814 | ||
7fa60fa3 | 815 | static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, |
a6468367 KW |
816 | const char *desc_file_path, QDict *options, |
817 | Error **errp) | |
7fa60fa3 FZ |
818 | { |
819 | int ret; | |
395a22fa | 820 | int matches; |
7fa60fa3 FZ |
821 | char access[11]; |
822 | char type[11]; | |
823 | char fname[512]; | |
d28d737f | 824 | const char *p, *np; |
7fa60fa3 FZ |
825 | int64_t sectors = 0; |
826 | int64_t flat_offset; | |
fe206562 | 827 | char *extent_path; |
24bc15d1 | 828 | BdrvChild *extent_file; |
f4c129a3 FZ |
829 | BDRVVmdkState *s = bs->opaque; |
830 | VmdkExtent *extent; | |
a6468367 | 831 | char extent_opt_prefix[32]; |
24bc15d1 | 832 | Error *local_err = NULL; |
7fa60fa3 | 833 | |
e4937694 | 834 | for (p = desc; *p; p = next_line(p)) { |
8a3e0bc3 FZ |
835 | /* parse extent line in one of below formats: |
836 | * | |
7fa60fa3 | 837 | * RW [size in sectors] FLAT "file-name.vmdk" OFFSET |
7fa60fa3 | 838 | * RW [size in sectors] SPARSE "file-name.vmdk" |
8a3e0bc3 FZ |
839 | * RW [size in sectors] VMFS "file-name.vmdk" |
840 | * RW [size in sectors] VMFSSPARSE "file-name.vmdk" | |
7fa60fa3 FZ |
841 | */ |
842 | flat_offset = -1; | |
395a22fa JC |
843 | matches = sscanf(p, "%10s %" SCNd64 " %10s \"%511[^\n\r\"]\" %" SCNd64, |
844 | access, §ors, type, fname, &flat_offset); | |
845 | if (matches < 4 || strcmp(access, "RW")) { | |
e4937694 | 846 | continue; |
7fa60fa3 | 847 | } else if (!strcmp(type, "FLAT")) { |
395a22fa | 848 | if (matches != 5 || flat_offset < 0) { |
d28d737f | 849 | goto invalid; |
7fa60fa3 | 850 | } |
dbbcaa8d | 851 | } else if (!strcmp(type, "VMFS")) { |
395a22fa | 852 | if (matches == 4) { |
b47053bd FZ |
853 | flat_offset = 0; |
854 | } else { | |
d28d737f | 855 | goto invalid; |
b47053bd | 856 | } |
395a22fa | 857 | } else if (matches != 4) { |
d28d737f | 858 | goto invalid; |
7fa60fa3 FZ |
859 | } |
860 | ||
7fa60fa3 | 861 | if (sectors <= 0 || |
daac8fdc | 862 | (strcmp(type, "FLAT") && strcmp(type, "SPARSE") && |
04d542c8 | 863 | strcmp(type, "VMFS") && strcmp(type, "VMFSSPARSE")) || |
7fa60fa3 | 864 | (strcmp(access, "RW"))) { |
e4937694 | 865 | continue; |
7fa60fa3 FZ |
866 | } |
867 | ||
5c98415b HR |
868 | if (!path_is_absolute(fname) && !path_has_protocol(fname) && |
869 | !desc_file_path[0]) | |
870 | { | |
f30c66ba | 871 | bdrv_refresh_filename(bs->file->bs); |
5c98415b | 872 | error_setg(errp, "Cannot use relative extent paths with VMDK " |
9a4f4c31 | 873 | "descriptor file '%s'", bs->file->bs->filename); |
5c98415b HR |
874 | return -EINVAL; |
875 | } | |
876 | ||
009b03aa | 877 | extent_path = path_combine(desc_file_path, fname); |
a6468367 KW |
878 | |
879 | ret = snprintf(extent_opt_prefix, 32, "extents.%d", s->num_extents); | |
880 | assert(ret < 32); | |
881 | ||
24bc15d1 KW |
882 | extent_file = bdrv_open_child(extent_path, options, extent_opt_prefix, |
883 | bs, &child_file, false, &local_err); | |
fe206562 | 884 | g_free(extent_path); |
24bc15d1 KW |
885 | if (local_err) { |
886 | error_propagate(errp, local_err); | |
887 | return -EINVAL; | |
86c6b429 FZ |
888 | } |
889 | ||
7fa60fa3 | 890 | /* save to extents array */ |
04d542c8 | 891 | if (!strcmp(type, "FLAT") || !strcmp(type, "VMFS")) { |
7fa60fa3 | 892 | /* FLAT extent */ |
7fa60fa3 | 893 | |
8aa1331c | 894 | ret = vmdk_add_extent(bs, extent_file, true, sectors, |
4823970b | 895 | 0, 0, 0, 0, 0, &extent, errp); |
8aa1331c | 896 | if (ret < 0) { |
24bc15d1 | 897 | bdrv_unref_child(bs, extent_file); |
8aa1331c FZ |
898 | return ret; |
899 | } | |
f16f509d | 900 | extent->flat_start_offset = flat_offset << 9; |
daac8fdc FZ |
901 | } else if (!strcmp(type, "SPARSE") || !strcmp(type, "VMFSSPARSE")) { |
902 | /* SPARSE extent and VMFSSPARSE extent are both "COWD" sparse file*/ | |
cf2ab8fc | 903 | char *buf = vmdk_read_desc(extent_file, 0, errp); |
d1833ef5 PB |
904 | if (!buf) { |
905 | ret = -EINVAL; | |
906 | } else { | |
a6468367 KW |
907 | ret = vmdk_open_sparse(bs, extent_file, bs->open_flags, buf, |
908 | options, errp); | |
d1833ef5 | 909 | } |
b6b1d31f | 910 | g_free(buf); |
86c6b429 | 911 | if (ret) { |
24bc15d1 | 912 | bdrv_unref_child(bs, extent_file); |
86c6b429 FZ |
913 | return ret; |
914 | } | |
f4c129a3 | 915 | extent = &s->extents[s->num_extents - 1]; |
7fa60fa3 | 916 | } else { |
4823970b | 917 | error_setg(errp, "Unsupported extent type '%s'", type); |
24bc15d1 | 918 | bdrv_unref_child(bs, extent_file); |
7fa60fa3 FZ |
919 | return -ENOTSUP; |
920 | } | |
f4c129a3 | 921 | extent->type = g_strdup(type); |
7fa60fa3 FZ |
922 | } |
923 | return 0; | |
d28d737f MA |
924 | |
925 | invalid: | |
926 | np = next_line(p); | |
927 | assert(np != p); | |
928 | if (np[-1] == '\n') { | |
929 | np--; | |
930 | } | |
931 | error_setg(errp, "Invalid extent line: %.*s", (int)(np - p), p); | |
932 | return -EINVAL; | |
7fa60fa3 FZ |
933 | } |
934 | ||
d1833ef5 | 935 | static int vmdk_open_desc_file(BlockDriverState *bs, int flags, char *buf, |
a6468367 | 936 | QDict *options, Error **errp) |
7fa60fa3 FZ |
937 | { |
938 | int ret; | |
7fa60fa3 FZ |
939 | char ct[128]; |
940 | BDRVVmdkState *s = bs->opaque; | |
941 | ||
7fa60fa3 | 942 | if (vmdk_parse_description(buf, "createType", ct, sizeof(ct))) { |
76abe407 PB |
943 | error_setg(errp, "invalid VMDK image descriptor"); |
944 | ret = -EINVAL; | |
0bed087d | 945 | goto exit; |
7fa60fa3 | 946 | } |
6398de51 | 947 | if (strcmp(ct, "monolithicFlat") && |
04d542c8 | 948 | strcmp(ct, "vmfs") && |
daac8fdc | 949 | strcmp(ct, "vmfsSparse") && |
86c6b429 | 950 | strcmp(ct, "twoGbMaxExtentSparse") && |
6398de51 | 951 | strcmp(ct, "twoGbMaxExtentFlat")) { |
4823970b | 952 | error_setg(errp, "Unsupported image type '%s'", ct); |
0bed087d EB |
953 | ret = -ENOTSUP; |
954 | goto exit; | |
7fa60fa3 | 955 | } |
f4c129a3 | 956 | s->create_type = g_strdup(ct); |
7fa60fa3 | 957 | s->desc_offset = 0; |
9a4f4c31 KW |
958 | ret = vmdk_parse_extents(buf, bs, bs->file->bs->exact_filename, options, |
959 | errp); | |
0bed087d | 960 | exit: |
0bed087d | 961 | return ret; |
7fa60fa3 FZ |
962 | } |
963 | ||
015a1036 HR |
964 | static int vmdk_open(BlockDriverState *bs, QDict *options, int flags, |
965 | Error **errp) | |
b4b3ab14 | 966 | { |
9aeecbbc | 967 | char *buf; |
86c6b429 FZ |
968 | int ret; |
969 | BDRVVmdkState *s = bs->opaque; | |
37f09e5e | 970 | uint32_t magic; |
fe44dc91 | 971 | Error *local_err = NULL; |
b4b3ab14 | 972 | |
4e4bf5c4 KW |
973 | bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, |
974 | false, errp); | |
975 | if (!bs->file) { | |
976 | return -EINVAL; | |
977 | } | |
978 | ||
cf2ab8fc | 979 | buf = vmdk_read_desc(bs->file, 0, errp); |
d1833ef5 PB |
980 | if (!buf) { |
981 | return -EINVAL; | |
982 | } | |
983 | ||
37f09e5e PB |
984 | magic = ldl_be_p(buf); |
985 | switch (magic) { | |
986 | case VMDK3_MAGIC: | |
987 | case VMDK4_MAGIC: | |
9a4f4c31 | 988 | ret = vmdk_open_sparse(bs, bs->file, flags, buf, options, |
24bc15d1 | 989 | errp); |
37f09e5e PB |
990 | s->desc_offset = 0x200; |
991 | break; | |
992 | default: | |
a6468367 | 993 | ret = vmdk_open_desc_file(bs, flags, buf, options, errp); |
37f09e5e | 994 | break; |
b4b3ab14 | 995 | } |
37f09e5e PB |
996 | if (ret) { |
997 | goto fail; | |
998 | } | |
999 | ||
bae0a0cc PB |
1000 | /* try to open parent images, if exist */ |
1001 | ret = vmdk_parent_open(bs); | |
1002 | if (ret) { | |
1003 | goto fail; | |
1004 | } | |
9877860e PM |
1005 | ret = vmdk_read_cid(bs, 0, &s->cid); |
1006 | if (ret) { | |
1007 | goto fail; | |
1008 | } | |
1009 | ret = vmdk_read_cid(bs, 1, &s->parent_cid); | |
1010 | if (ret) { | |
1011 | goto fail; | |
1012 | } | |
848c66e8 | 1013 | qemu_co_mutex_init(&s->lock); |
2bc3166c KW |
1014 | |
1015 | /* Disable migration when VMDK images are used */ | |
81e5f78a AG |
1016 | error_setg(&s->migration_blocker, "The vmdk format used by node '%s' " |
1017 | "does not support live migration", | |
1018 | bdrv_get_device_or_node_name(bs)); | |
fe44dc91 AA |
1019 | ret = migrate_add_blocker(s->migration_blocker, &local_err); |
1020 | if (local_err) { | |
1021 | error_propagate(errp, local_err); | |
1022 | error_free(s->migration_blocker); | |
1023 | goto fail; | |
1024 | } | |
1025 | ||
d1833ef5 | 1026 | g_free(buf); |
2bc3166c | 1027 | return 0; |
bae0a0cc PB |
1028 | |
1029 | fail: | |
d1833ef5 | 1030 | g_free(buf); |
f4c129a3 FZ |
1031 | g_free(s->create_type); |
1032 | s->create_type = NULL; | |
bae0a0cc PB |
1033 | vmdk_free_extents(bs); |
1034 | return ret; | |
ea2384d3 FB |
1035 | } |
1036 | ||
d34682cd | 1037 | |
3baca891 | 1038 | static void vmdk_refresh_limits(BlockDriverState *bs, Error **errp) |
d34682cd KW |
1039 | { |
1040 | BDRVVmdkState *s = bs->opaque; | |
1041 | int i; | |
1042 | ||
1043 | for (i = 0; i < s->num_extents; i++) { | |
1044 | if (!s->extents[i].flat) { | |
cf081fca EB |
1045 | bs->bl.pwrite_zeroes_alignment = |
1046 | MAX(bs->bl.pwrite_zeroes_alignment, | |
1047 | s->extents[i].cluster_sectors << BDRV_SECTOR_BITS); | |
d34682cd KW |
1048 | } |
1049 | } | |
d34682cd KW |
1050 | } |
1051 | ||
c6ac36e1 FZ |
1052 | /** |
1053 | * get_whole_cluster | |
1054 | * | |
1055 | * Copy backing file's cluster that covers @sector_num, otherwise write zero, | |
1056 | * to the cluster at @cluster_sector_num. | |
1057 | * | |
1058 | * If @skip_start_sector < @skip_end_sector, the relative range | |
1059 | * [@skip_start_sector, @skip_end_sector) is not copied or written, and leave | |
1060 | * it for call to write user data in the request. | |
1061 | */ | |
b3976d3c | 1062 | static int get_whole_cluster(BlockDriverState *bs, |
c6ac36e1 | 1063 | VmdkExtent *extent, |
37b1d7d8 KW |
1064 | uint64_t cluster_offset, |
1065 | uint64_t offset, | |
1066 | uint64_t skip_start_bytes, | |
1067 | uint64_t skip_end_bytes) | |
5f4da8c0 | 1068 | { |
bf81507d | 1069 | int ret = VMDK_OK; |
c6ac36e1 FZ |
1070 | int64_t cluster_bytes; |
1071 | uint8_t *whole_grain; | |
1072 | ||
1073 | /* For COW, align request sector_num to cluster start */ | |
c6ac36e1 | 1074 | cluster_bytes = extent->cluster_sectors << BDRV_SECTOR_BITS; |
37b1d7d8 | 1075 | offset = QEMU_ALIGN_DOWN(offset, cluster_bytes); |
c6ac36e1 | 1076 | whole_grain = qemu_blockalign(bs, cluster_bytes); |
5f4da8c0 | 1077 | |
760e0063 | 1078 | if (!bs->backing) { |
37b1d7d8 KW |
1079 | memset(whole_grain, 0, skip_start_bytes); |
1080 | memset(whole_grain + skip_end_bytes, 0, cluster_bytes - skip_end_bytes); | |
c6ac36e1 FZ |
1081 | } |
1082 | ||
37b1d7d8 | 1083 | assert(skip_end_bytes <= cluster_bytes); |
0e69c543 FZ |
1084 | /* we will be here if it's first write on non-exist grain(cluster). |
1085 | * try to read from parent image, if exist */ | |
760e0063 | 1086 | if (bs->backing && !vmdk_is_cid_valid(bs)) { |
c6ac36e1 FZ |
1087 | ret = VMDK_ERROR; |
1088 | goto exit; | |
1089 | } | |
5f4da8c0 | 1090 | |
c6ac36e1 | 1091 | /* Read backing data before skip range */ |
37b1d7d8 | 1092 | if (skip_start_bytes > 0) { |
760e0063 | 1093 | if (bs->backing) { |
23c4b2a8 HR |
1094 | /* qcow2 emits this on bs->file instead of bs->backing */ |
1095 | BLKDBG_EVENT(extent->file, BLKDBG_COW_READ); | |
cf2ab8fc | 1096 | ret = bdrv_pread(bs->backing, offset, whole_grain, |
37b1d7d8 | 1097 | skip_start_bytes); |
c6ac36e1 FZ |
1098 | if (ret < 0) { |
1099 | ret = VMDK_ERROR; | |
1100 | goto exit; | |
1101 | } | |
1102 | } | |
23c4b2a8 | 1103 | BLKDBG_EVENT(extent->file, BLKDBG_COW_WRITE); |
d9ca2ea2 | 1104 | ret = bdrv_pwrite(extent->file, cluster_offset, whole_grain, |
37b1d7d8 | 1105 | skip_start_bytes); |
c336500d | 1106 | if (ret < 0) { |
bf81507d FZ |
1107 | ret = VMDK_ERROR; |
1108 | goto exit; | |
c336500d | 1109 | } |
c6ac36e1 FZ |
1110 | } |
1111 | /* Read backing data after skip range */ | |
37b1d7d8 | 1112 | if (skip_end_bytes < cluster_bytes) { |
760e0063 | 1113 | if (bs->backing) { |
23c4b2a8 HR |
1114 | /* qcow2 emits this on bs->file instead of bs->backing */ |
1115 | BLKDBG_EVENT(extent->file, BLKDBG_COW_READ); | |
cf2ab8fc | 1116 | ret = bdrv_pread(bs->backing, offset + skip_end_bytes, |
37b1d7d8 KW |
1117 | whole_grain + skip_end_bytes, |
1118 | cluster_bytes - skip_end_bytes); | |
c6ac36e1 FZ |
1119 | if (ret < 0) { |
1120 | ret = VMDK_ERROR; | |
1121 | goto exit; | |
1122 | } | |
1123 | } | |
23c4b2a8 | 1124 | BLKDBG_EVENT(extent->file, BLKDBG_COW_WRITE); |
d9ca2ea2 | 1125 | ret = bdrv_pwrite(extent->file, cluster_offset + skip_end_bytes, |
37b1d7d8 KW |
1126 | whole_grain + skip_end_bytes, |
1127 | cluster_bytes - skip_end_bytes); | |
c336500d | 1128 | if (ret < 0) { |
bf81507d FZ |
1129 | ret = VMDK_ERROR; |
1130 | goto exit; | |
630530a6 TS |
1131 | } |
1132 | } | |
c6ac36e1 | 1133 | |
37b1d7d8 | 1134 | ret = VMDK_OK; |
bf81507d FZ |
1135 | exit: |
1136 | qemu_vfree(whole_grain); | |
1137 | return ret; | |
630530a6 TS |
1138 | } |
1139 | ||
c6ac36e1 FZ |
1140 | static int vmdk_L2update(VmdkExtent *extent, VmdkMetaData *m_data, |
1141 | uint32_t offset) | |
630530a6 | 1142 | { |
c6ac36e1 | 1143 | offset = cpu_to_le32(offset); |
630530a6 | 1144 | /* update L2 table */ |
23c4b2a8 | 1145 | BLKDBG_EVENT(extent->file, BLKDBG_L2_UPDATE); |
d9ca2ea2 | 1146 | if (bdrv_pwrite_sync(extent->file, |
b3976d3c | 1147 | ((int64_t)m_data->l2_offset * 512) |
c6ac36e1 | 1148 | + (m_data->l2_index * sizeof(offset)), |
e304e8e5 | 1149 | &offset, sizeof(offset)) < 0) { |
65f74725 | 1150 | return VMDK_ERROR; |
b3976d3c | 1151 | } |
630530a6 | 1152 | /* update backup L2 table */ |
b3976d3c FZ |
1153 | if (extent->l1_backup_table_offset != 0) { |
1154 | m_data->l2_offset = extent->l1_backup_table[m_data->l1_index]; | |
d9ca2ea2 | 1155 | if (bdrv_pwrite_sync(extent->file, |
b3976d3c | 1156 | ((int64_t)m_data->l2_offset * 512) |
c6ac36e1 | 1157 | + (m_data->l2_index * sizeof(offset)), |
e304e8e5 | 1158 | &offset, sizeof(offset)) < 0) { |
65f74725 | 1159 | return VMDK_ERROR; |
b3976d3c | 1160 | } |
5f4da8c0 | 1161 | } |
cdeaf1f1 FZ |
1162 | if (m_data->l2_cache_entry) { |
1163 | *m_data->l2_cache_entry = offset; | |
1164 | } | |
630530a6 | 1165 | |
65f74725 | 1166 | return VMDK_OK; |
5f4da8c0 TS |
1167 | } |
1168 | ||
c6ac36e1 FZ |
1169 | /** |
1170 | * get_cluster_offset | |
1171 | * | |
1172 | * Look up cluster offset in extent file by sector number, and store in | |
1173 | * @cluster_offset. | |
1174 | * | |
1175 | * For flat extents, the start offset as parsed from the description file is | |
1176 | * returned. | |
1177 | * | |
1178 | * For sparse extents, look up in L1, L2 table. If allocate is true, return an | |
1179 | * offset for a new cluster and update L2 cache. If there is a backing file, | |
1180 | * COW is done before returning; otherwise, zeroes are written to the allocated | |
1181 | * cluster. Both COW and zero writing skips the sector range | |
1182 | * [@skip_start_sector, @skip_end_sector) passed in by caller, because caller | |
1183 | * has new data to write there. | |
1184 | * | |
1185 | * Returns: VMDK_OK if cluster exists and mapped in the image. | |
1186 | * VMDK_UNALLOC if cluster is not mapped and @allocate is false. | |
1187 | * VMDK_ERROR if failed. | |
1188 | */ | |
91b85bd3 | 1189 | static int get_cluster_offset(BlockDriverState *bs, |
c6ac36e1 FZ |
1190 | VmdkExtent *extent, |
1191 | VmdkMetaData *m_data, | |
1192 | uint64_t offset, | |
1193 | bool allocate, | |
1194 | uint64_t *cluster_offset, | |
37b1d7d8 KW |
1195 | uint64_t skip_start_bytes, |
1196 | uint64_t skip_end_bytes) | |
ea2384d3 | 1197 | { |
ea2384d3 FB |
1198 | unsigned int l1_index, l2_offset, l2_index; |
1199 | int min_index, i, j; | |
e304e8e5 | 1200 | uint32_t min_count, *l2_table; |
14ead646 | 1201 | bool zeroed = false; |
c6ac36e1 | 1202 | int64_t ret; |
d1319b07 | 1203 | int64_t cluster_sector; |
630530a6 | 1204 | |
ae261c86 | 1205 | if (m_data) { |
630530a6 | 1206 | m_data->valid = 0; |
ae261c86 | 1207 | } |
91b85bd3 | 1208 | if (extent->flat) { |
7fa60fa3 | 1209 | *cluster_offset = extent->flat_start_offset; |
65f74725 | 1210 | return VMDK_OK; |
91b85bd3 | 1211 | } |
630530a6 | 1212 | |
6398de51 | 1213 | offset -= (extent->end_sector - extent->sectors) * SECTOR_SIZE; |
b3976d3c FZ |
1214 | l1_index = (offset >> 9) / extent->l1_entry_sectors; |
1215 | if (l1_index >= extent->l1_size) { | |
65f74725 | 1216 | return VMDK_ERROR; |
b3976d3c FZ |
1217 | } |
1218 | l2_offset = extent->l1_table[l1_index]; | |
1219 | if (!l2_offset) { | |
65f74725 | 1220 | return VMDK_UNALLOC; |
b3976d3c | 1221 | } |
b4b3ab14 | 1222 | for (i = 0; i < L2_CACHE_SIZE; i++) { |
b3976d3c | 1223 | if (l2_offset == extent->l2_cache_offsets[i]) { |
ea2384d3 | 1224 | /* increment the hit count */ |
b3976d3c | 1225 | if (++extent->l2_cache_counts[i] == 0xffffffff) { |
b4b3ab14 | 1226 | for (j = 0; j < L2_CACHE_SIZE; j++) { |
b3976d3c | 1227 | extent->l2_cache_counts[j] >>= 1; |
ea2384d3 FB |
1228 | } |
1229 | } | |
b3976d3c | 1230 | l2_table = extent->l2_cache + (i * extent->l2_size); |
ea2384d3 FB |
1231 | goto found; |
1232 | } | |
1233 | } | |
1234 | /* not found: load a new entry in the least used one */ | |
1235 | min_index = 0; | |
1236 | min_count = 0xffffffff; | |
b4b3ab14 | 1237 | for (i = 0; i < L2_CACHE_SIZE; i++) { |
b3976d3c FZ |
1238 | if (extent->l2_cache_counts[i] < min_count) { |
1239 | min_count = extent->l2_cache_counts[i]; | |
ea2384d3 FB |
1240 | min_index = i; |
1241 | } | |
1242 | } | |
b3976d3c | 1243 | l2_table = extent->l2_cache + (min_index * extent->l2_size); |
23c4b2a8 | 1244 | BLKDBG_EVENT(extent->file, BLKDBG_L2_LOAD); |
cf2ab8fc | 1245 | if (bdrv_pread(extent->file, |
b3976d3c FZ |
1246 | (int64_t)l2_offset * 512, |
1247 | l2_table, | |
1248 | extent->l2_size * sizeof(uint32_t) | |
1249 | ) != extent->l2_size * sizeof(uint32_t)) { | |
65f74725 | 1250 | return VMDK_ERROR; |
b3976d3c | 1251 | } |
5f4da8c0 | 1252 | |
b3976d3c FZ |
1253 | extent->l2_cache_offsets[min_index] = l2_offset; |
1254 | extent->l2_cache_counts[min_index] = 1; | |
ea2384d3 | 1255 | found: |
b3976d3c | 1256 | l2_index = ((offset >> 9) / extent->cluster_sectors) % extent->l2_size; |
c6ac36e1 | 1257 | cluster_sector = le32_to_cpu(l2_table[l2_index]); |
630530a6 | 1258 | |
c6ac36e1 | 1259 | if (extent->has_zero_grain && cluster_sector == VMDK_GTE_ZEROED) { |
14ead646 FZ |
1260 | zeroed = true; |
1261 | } | |
1262 | ||
c6ac36e1 | 1263 | if (!cluster_sector || zeroed) { |
91b85bd3 | 1264 | if (!allocate) { |
14ead646 | 1265 | return zeroed ? VMDK_ZEROED : VMDK_UNALLOC; |
91b85bd3 | 1266 | } |
9949f97e | 1267 | |
a77672ea YCL |
1268 | if (extent->next_cluster_sector >= VMDK_EXTENT_MAX_SECTORS) { |
1269 | return VMDK_ERROR; | |
1270 | } | |
1271 | ||
c6ac36e1 FZ |
1272 | cluster_sector = extent->next_cluster_sector; |
1273 | extent->next_cluster_sector += extent->cluster_sectors; | |
630530a6 | 1274 | |
630530a6 TS |
1275 | /* First of all we write grain itself, to avoid race condition |
1276 | * that may to corrupt the image. | |
1277 | * This problem may occur because of insufficient space on host disk | |
1278 | * or inappropriate VM shutdown. | |
1279 | */ | |
37b1d7d8 KW |
1280 | ret = get_whole_cluster(bs, extent, cluster_sector * BDRV_SECTOR_SIZE, |
1281 | offset, skip_start_bytes, skip_end_bytes); | |
c6ac36e1 FZ |
1282 | if (ret) { |
1283 | return ret; | |
630530a6 | 1284 | } |
524089bc RS |
1285 | if (m_data) { |
1286 | m_data->valid = 1; | |
1287 | m_data->l1_index = l1_index; | |
1288 | m_data->l2_index = l2_index; | |
1289 | m_data->l2_offset = l2_offset; | |
1290 | m_data->l2_cache_entry = &l2_table[l2_index]; | |
1291 | } | |
ff1afc72 | 1292 | } |
c6ac36e1 | 1293 | *cluster_offset = cluster_sector << BDRV_SECTOR_BITS; |
65f74725 | 1294 | return VMDK_OK; |
ea2384d3 FB |
1295 | } |
1296 | ||
b3976d3c FZ |
1297 | static VmdkExtent *find_extent(BDRVVmdkState *s, |
1298 | int64_t sector_num, VmdkExtent *start_hint) | |
1299 | { | |
1300 | VmdkExtent *extent = start_hint; | |
1301 | ||
1302 | if (!extent) { | |
1303 | extent = &s->extents[0]; | |
1304 | } | |
1305 | while (extent < &s->extents[s->num_extents]) { | |
1306 | if (sector_num < extent->end_sector) { | |
1307 | return extent; | |
1308 | } | |
1309 | extent++; | |
1310 | } | |
1311 | return NULL; | |
1312 | } | |
1313 | ||
a844a2b0 KW |
1314 | static inline uint64_t vmdk_find_offset_in_cluster(VmdkExtent *extent, |
1315 | int64_t offset) | |
1316 | { | |
9be38598 | 1317 | uint64_t extent_begin_offset, extent_relative_offset; |
a844a2b0 KW |
1318 | uint64_t cluster_size = extent->cluster_sectors * BDRV_SECTOR_SIZE; |
1319 | ||
1320 | extent_begin_offset = | |
1321 | (extent->end_sector - extent->sectors) * BDRV_SECTOR_SIZE; | |
1322 | extent_relative_offset = offset - extent_begin_offset; | |
9be38598 | 1323 | return extent_relative_offset % cluster_size; |
a844a2b0 KW |
1324 | } |
1325 | ||
c72080b9 EB |
1326 | static int coroutine_fn vmdk_co_block_status(BlockDriverState *bs, |
1327 | bool want_zero, | |
1328 | int64_t offset, int64_t bytes, | |
1329 | int64_t *pnum, int64_t *map, | |
1330 | BlockDriverState **file) | |
ea2384d3 FB |
1331 | { |
1332 | BDRVVmdkState *s = bs->opaque; | |
b3976d3c | 1333 | int64_t index_in_cluster, n, ret; |
c72080b9 | 1334 | uint64_t cluster_offset; |
b3976d3c FZ |
1335 | VmdkExtent *extent; |
1336 | ||
c72080b9 | 1337 | extent = find_extent(s, offset >> BDRV_SECTOR_BITS, NULL); |
b3976d3c | 1338 | if (!extent) { |
c72080b9 | 1339 | return -EIO; |
b3976d3c | 1340 | } |
f8a2e5e3 | 1341 | qemu_co_mutex_lock(&s->lock); |
c72080b9 | 1342 | ret = get_cluster_offset(bs, extent, NULL, offset, false, &cluster_offset, |
c6ac36e1 | 1343 | 0, 0); |
f8a2e5e3 | 1344 | qemu_co_mutex_unlock(&s->lock); |
14ead646 | 1345 | |
c72080b9 | 1346 | index_in_cluster = vmdk_find_offset_in_cluster(extent, offset); |
4bc74be9 PB |
1347 | switch (ret) { |
1348 | case VMDK_ERROR: | |
1349 | ret = -EIO; | |
1350 | break; | |
1351 | case VMDK_UNALLOC: | |
1352 | ret = 0; | |
1353 | break; | |
1354 | case VMDK_ZEROED: | |
1355 | ret = BDRV_BLOCK_ZERO; | |
1356 | break; | |
1357 | case VMDK_OK: | |
1358 | ret = BDRV_BLOCK_DATA; | |
e0f100f5 | 1359 | if (!extent->compressed) { |
d0a18f10 | 1360 | ret |= BDRV_BLOCK_OFFSET_VALID; |
c72080b9 | 1361 | *map = cluster_offset + index_in_cluster; |
4bc74be9 | 1362 | } |
e0f100f5 | 1363 | *file = extent->file->bs; |
4bc74be9 PB |
1364 | break; |
1365 | } | |
91b85bd3 | 1366 | |
c72080b9 EB |
1367 | n = extent->cluster_sectors * BDRV_SECTOR_SIZE - index_in_cluster; |
1368 | *pnum = MIN(n, bytes); | |
b3976d3c | 1369 | return ret; |
ea2384d3 FB |
1370 | } |
1371 | ||
dd3f6ee2 | 1372 | static int vmdk_write_extent(VmdkExtent *extent, int64_t cluster_offset, |
37b1d7d8 KW |
1373 | int64_t offset_in_cluster, QEMUIOVector *qiov, |
1374 | uint64_t qiov_offset, uint64_t n_bytes, | |
1375 | uint64_t offset) | |
dd3f6ee2 FZ |
1376 | { |
1377 | int ret; | |
2b2c8c5d FZ |
1378 | VmdkGrainMarker *data = NULL; |
1379 | uLongf buf_len; | |
37b1d7d8 | 1380 | QEMUIOVector local_qiov; |
5e82a31e FZ |
1381 | int64_t write_offset; |
1382 | int64_t write_end_sector; | |
dd3f6ee2 | 1383 | |
2b2c8c5d | 1384 | if (extent->compressed) { |
37b1d7d8 KW |
1385 | void *compressed_data; |
1386 | ||
2b2c8c5d FZ |
1387 | if (!extent->has_marker) { |
1388 | ret = -EINVAL; | |
1389 | goto out; | |
1390 | } | |
1391 | buf_len = (extent->cluster_sectors << 9) * 2; | |
1392 | data = g_malloc(buf_len + sizeof(VmdkGrainMarker)); | |
37b1d7d8 KW |
1393 | |
1394 | compressed_data = g_malloc(n_bytes); | |
1395 | qemu_iovec_to_buf(qiov, qiov_offset, compressed_data, n_bytes); | |
1396 | ret = compress(data->data, &buf_len, compressed_data, n_bytes); | |
1397 | g_free(compressed_data); | |
1398 | ||
1399 | if (ret != Z_OK || buf_len == 0) { | |
2b2c8c5d FZ |
1400 | ret = -EINVAL; |
1401 | goto out; | |
1402 | } | |
37b1d7d8 | 1403 | |
4545d4f4 QH |
1404 | data->lba = cpu_to_le64(offset >> BDRV_SECTOR_BITS); |
1405 | data->size = cpu_to_le32(buf_len); | |
37b1d7d8 KW |
1406 | |
1407 | n_bytes = buf_len + sizeof(VmdkGrainMarker); | |
199d95b0 | 1408 | qemu_iovec_init_buf(&local_qiov, data, n_bytes); |
23c4b2a8 HR |
1409 | |
1410 | BLKDBG_EVENT(extent->file, BLKDBG_WRITE_COMPRESSED); | |
37b1d7d8 KW |
1411 | } else { |
1412 | qemu_iovec_init(&local_qiov, qiov->niov); | |
1413 | qemu_iovec_concat(&local_qiov, qiov, qiov_offset, n_bytes); | |
23c4b2a8 HR |
1414 | |
1415 | BLKDBG_EVENT(extent->file, BLKDBG_WRITE_AIO); | |
2b2c8c5d | 1416 | } |
37b1d7d8 | 1417 | |
3c363575 | 1418 | write_offset = cluster_offset + offset_in_cluster; |
a03ef88f | 1419 | ret = bdrv_co_pwritev(extent->file, write_offset, n_bytes, |
37b1d7d8 | 1420 | &local_qiov, 0); |
5e82a31e | 1421 | |
37b1d7d8 | 1422 | write_end_sector = DIV_ROUND_UP(write_offset + n_bytes, BDRV_SECTOR_SIZE); |
5e82a31e | 1423 | |
3efffc32 RG |
1424 | if (extent->compressed) { |
1425 | extent->next_cluster_sector = write_end_sector; | |
1426 | } else { | |
1427 | extent->next_cluster_sector = MAX(extent->next_cluster_sector, | |
1428 | write_end_sector); | |
1429 | } | |
5e82a31e | 1430 | |
37b1d7d8 | 1431 | if (ret < 0) { |
dd3f6ee2 FZ |
1432 | goto out; |
1433 | } | |
1434 | ret = 0; | |
1435 | out: | |
2b2c8c5d | 1436 | g_free(data); |
37b1d7d8 KW |
1437 | if (!extent->compressed) { |
1438 | qemu_iovec_destroy(&local_qiov); | |
1439 | } | |
dd3f6ee2 FZ |
1440 | return ret; |
1441 | } | |
1442 | ||
1443 | static int vmdk_read_extent(VmdkExtent *extent, int64_t cluster_offset, | |
f10cc243 KW |
1444 | int64_t offset_in_cluster, QEMUIOVector *qiov, |
1445 | int bytes) | |
dd3f6ee2 FZ |
1446 | { |
1447 | int ret; | |
2b2c8c5d FZ |
1448 | int cluster_bytes, buf_bytes; |
1449 | uint8_t *cluster_buf, *compressed_data; | |
1450 | uint8_t *uncomp_buf; | |
1451 | uint32_t data_len; | |
1452 | VmdkGrainMarker *marker; | |
1453 | uLongf buf_len; | |
1454 | ||
dd3f6ee2 | 1455 | |
2b2c8c5d | 1456 | if (!extent->compressed) { |
23c4b2a8 | 1457 | BLKDBG_EVENT(extent->file, BLKDBG_READ_AIO); |
a03ef88f | 1458 | ret = bdrv_co_preadv(extent->file, |
f10cc243 KW |
1459 | cluster_offset + offset_in_cluster, bytes, |
1460 | qiov, 0); | |
1461 | if (ret < 0) { | |
1462 | return ret; | |
2b2c8c5d | 1463 | } |
f10cc243 | 1464 | return 0; |
2b2c8c5d FZ |
1465 | } |
1466 | cluster_bytes = extent->cluster_sectors * 512; | |
1467 | /* Read two clusters in case GrainMarker + compressed data > one cluster */ | |
1468 | buf_bytes = cluster_bytes * 2; | |
1469 | cluster_buf = g_malloc(buf_bytes); | |
1470 | uncomp_buf = g_malloc(cluster_bytes); | |
23c4b2a8 | 1471 | BLKDBG_EVENT(extent->file, BLKDBG_READ_COMPRESSED); |
cf2ab8fc | 1472 | ret = bdrv_pread(extent->file, |
2b2c8c5d FZ |
1473 | cluster_offset, |
1474 | cluster_buf, buf_bytes); | |
1475 | if (ret < 0) { | |
1476 | goto out; | |
1477 | } | |
1478 | compressed_data = cluster_buf; | |
1479 | buf_len = cluster_bytes; | |
1480 | data_len = cluster_bytes; | |
1481 | if (extent->has_marker) { | |
1482 | marker = (VmdkGrainMarker *)cluster_buf; | |
1483 | compressed_data = marker->data; | |
1484 | data_len = le32_to_cpu(marker->size); | |
1485 | } | |
1486 | if (!data_len || data_len > buf_bytes) { | |
1487 | ret = -EINVAL; | |
1488 | goto out; | |
1489 | } | |
1490 | ret = uncompress(uncomp_buf, &buf_len, compressed_data, data_len); | |
1491 | if (ret != Z_OK) { | |
1492 | ret = -EINVAL; | |
1493 | goto out; | |
1494 | ||
1495 | } | |
1496 | if (offset_in_cluster < 0 || | |
f10cc243 | 1497 | offset_in_cluster + bytes > buf_len) { |
2b2c8c5d FZ |
1498 | ret = -EINVAL; |
1499 | goto out; | |
dd3f6ee2 | 1500 | } |
f10cc243 | 1501 | qemu_iovec_from_buf(qiov, 0, uncomp_buf + offset_in_cluster, bytes); |
2b2c8c5d FZ |
1502 | ret = 0; |
1503 | ||
1504 | out: | |
1505 | g_free(uncomp_buf); | |
1506 | g_free(cluster_buf); | |
1507 | return ret; | |
dd3f6ee2 FZ |
1508 | } |
1509 | ||
f10cc243 KW |
1510 | static int coroutine_fn |
1511 | vmdk_co_preadv(BlockDriverState *bs, uint64_t offset, uint64_t bytes, | |
1512 | QEMUIOVector *qiov, int flags) | |
ea2384d3 FB |
1513 | { |
1514 | BDRVVmdkState *s = bs->opaque; | |
b3976d3c | 1515 | int ret; |
f10cc243 | 1516 | uint64_t n_bytes, offset_in_cluster; |
b3976d3c | 1517 | VmdkExtent *extent = NULL; |
f10cc243 | 1518 | QEMUIOVector local_qiov; |
ea2384d3 | 1519 | uint64_t cluster_offset; |
f10cc243 | 1520 | uint64_t bytes_done = 0; |
5f4da8c0 | 1521 | |
f10cc243 KW |
1522 | qemu_iovec_init(&local_qiov, qiov->niov); |
1523 | qemu_co_mutex_lock(&s->lock); | |
1524 | ||
1525 | while (bytes > 0) { | |
1526 | extent = find_extent(s, offset >> BDRV_SECTOR_BITS, extent); | |
b3976d3c | 1527 | if (!extent) { |
f10cc243 KW |
1528 | ret = -EIO; |
1529 | goto fail; | |
b3976d3c | 1530 | } |
c6ac36e1 | 1531 | ret = get_cluster_offset(bs, extent, NULL, |
f10cc243 KW |
1532 | offset, false, &cluster_offset, 0, 0); |
1533 | offset_in_cluster = vmdk_find_offset_in_cluster(extent, offset); | |
1534 | ||
1535 | n_bytes = MIN(bytes, extent->cluster_sectors * BDRV_SECTOR_SIZE | |
1536 | - offset_in_cluster); | |
1537 | ||
14ead646 | 1538 | if (ret != VMDK_OK) { |
91b85bd3 | 1539 | /* if not allocated, try to read from parent image, if exist */ |
760e0063 | 1540 | if (bs->backing && ret != VMDK_ZEROED) { |
ae261c86 | 1541 | if (!vmdk_is_cid_valid(bs)) { |
f10cc243 KW |
1542 | ret = -EINVAL; |
1543 | goto fail; | |
ae261c86 | 1544 | } |
f10cc243 KW |
1545 | |
1546 | qemu_iovec_reset(&local_qiov); | |
1547 | qemu_iovec_concat(&local_qiov, qiov, bytes_done, n_bytes); | |
1548 | ||
23c4b2a8 HR |
1549 | /* qcow2 emits this on bs->file instead of bs->backing */ |
1550 | BLKDBG_EVENT(bs->file, BLKDBG_READ_BACKING_AIO); | |
a03ef88f | 1551 | ret = bdrv_co_preadv(bs->backing, offset, n_bytes, |
f10cc243 | 1552 | &local_qiov, 0); |
ae261c86 | 1553 | if (ret < 0) { |
f10cc243 | 1554 | goto fail; |
ae261c86 | 1555 | } |
5f4da8c0 | 1556 | } else { |
f10cc243 | 1557 | qemu_iovec_memset(qiov, bytes_done, 0, n_bytes); |
5f4da8c0 | 1558 | } |
ea2384d3 | 1559 | } else { |
f10cc243 KW |
1560 | qemu_iovec_reset(&local_qiov); |
1561 | qemu_iovec_concat(&local_qiov, qiov, bytes_done, n_bytes); | |
1562 | ||
1563 | ret = vmdk_read_extent(extent, cluster_offset, offset_in_cluster, | |
1564 | &local_qiov, n_bytes); | |
dd3f6ee2 | 1565 | if (ret) { |
f10cc243 | 1566 | goto fail; |
7fa60fa3 | 1567 | } |
ea2384d3 | 1568 | } |
f10cc243 KW |
1569 | bytes -= n_bytes; |
1570 | offset += n_bytes; | |
1571 | bytes_done += n_bytes; | |
ea2384d3 | 1572 | } |
ea2384d3 | 1573 | |
f10cc243 KW |
1574 | ret = 0; |
1575 | fail: | |
2914caa0 | 1576 | qemu_co_mutex_unlock(&s->lock); |
f10cc243 KW |
1577 | qemu_iovec_destroy(&local_qiov); |
1578 | ||
2914caa0 PB |
1579 | return ret; |
1580 | } | |
1581 | ||
cdeaf1f1 FZ |
1582 | /** |
1583 | * vmdk_write: | |
1584 | * @zeroed: buf is ignored (data is zero), use zeroed_grain GTE feature | |
8e507243 FZ |
1585 | * if possible, otherwise return -ENOTSUP. |
1586 | * @zero_dry_run: used for zeroed == true only, don't update L2 table, just try | |
1587 | * with each cluster. By dry run we can find if the zero write | |
1588 | * is possible without modifying image data. | |
cdeaf1f1 FZ |
1589 | * |
1590 | * Returns: error code with 0 for success. | |
1591 | */ | |
37b1d7d8 KW |
1592 | static int vmdk_pwritev(BlockDriverState *bs, uint64_t offset, |
1593 | uint64_t bytes, QEMUIOVector *qiov, | |
1594 | bool zeroed, bool zero_dry_run) | |
ea2384d3 | 1595 | { |
ff1afc72 | 1596 | BDRVVmdkState *s = bs->opaque; |
b3976d3c | 1597 | VmdkExtent *extent = NULL; |
585ea0c8 | 1598 | int ret; |
37b1d7d8 | 1599 | int64_t offset_in_cluster, n_bytes; |
ff1afc72 | 1600 | uint64_t cluster_offset; |
37b1d7d8 | 1601 | uint64_t bytes_done = 0; |
b3976d3c | 1602 | VmdkMetaData m_data; |
ff1afc72 | 1603 | |
37b1d7d8 KW |
1604 | if (DIV_ROUND_UP(offset, BDRV_SECTOR_SIZE) > bs->total_sectors) { |
1605 | error_report("Wrong offset: offset=0x%" PRIx64 | |
9af9e0fe | 1606 | " total_sectors=0x%" PRIx64, |
37b1d7d8 | 1607 | offset, bs->total_sectors); |
7fa60fa3 | 1608 | return -EIO; |
630530a6 TS |
1609 | } |
1610 | ||
37b1d7d8 KW |
1611 | while (bytes > 0) { |
1612 | extent = find_extent(s, offset >> BDRV_SECTOR_BITS, extent); | |
b3976d3c FZ |
1613 | if (!extent) { |
1614 | return -EIO; | |
1615 | } | |
37b1d7d8 KW |
1616 | offset_in_cluster = vmdk_find_offset_in_cluster(extent, offset); |
1617 | n_bytes = MIN(bytes, extent->cluster_sectors * BDRV_SECTOR_SIZE | |
1618 | - offset_in_cluster); | |
1619 | ||
1620 | ret = get_cluster_offset(bs, extent, &m_data, offset, | |
c6ac36e1 | 1621 | !(extent->compressed || zeroed), |
37b1d7d8 KW |
1622 | &cluster_offset, offset_in_cluster, |
1623 | offset_in_cluster + n_bytes); | |
2b2c8c5d | 1624 | if (extent->compressed) { |
65f74725 | 1625 | if (ret == VMDK_OK) { |
2b2c8c5d | 1626 | /* Refuse write to allocated cluster for streamOptimized */ |
4823970b FZ |
1627 | error_report("Could not write to allocated cluster" |
1628 | " for streamOptimized"); | |
2b2c8c5d FZ |
1629 | return -EIO; |
1630 | } else { | |
1631 | /* allocate */ | |
37b1d7d8 | 1632 | ret = get_cluster_offset(bs, extent, &m_data, offset, |
c6ac36e1 | 1633 | true, &cluster_offset, 0, 0); |
2b2c8c5d FZ |
1634 | } |
1635 | } | |
cdeaf1f1 | 1636 | if (ret == VMDK_ERROR) { |
91b85bd3 | 1637 | return -EINVAL; |
b3976d3c | 1638 | } |
cdeaf1f1 FZ |
1639 | if (zeroed) { |
1640 | /* Do zeroed write, buf is ignored */ | |
1641 | if (extent->has_zero_grain && | |
37b1d7d8 KW |
1642 | offset_in_cluster == 0 && |
1643 | n_bytes >= extent->cluster_sectors * BDRV_SECTOR_SIZE) { | |
1644 | n_bytes = extent->cluster_sectors * BDRV_SECTOR_SIZE; | |
cdeaf1f1 | 1645 | if (!zero_dry_run) { |
cdeaf1f1 | 1646 | /* update L2 tables */ |
c6ac36e1 FZ |
1647 | if (vmdk_L2update(extent, &m_data, VMDK_GTE_ZEROED) |
1648 | != VMDK_OK) { | |
cdeaf1f1 FZ |
1649 | return -EIO; |
1650 | } | |
1651 | } | |
1652 | } else { | |
1653 | return -ENOTSUP; | |
1654 | } | |
1655 | } else { | |
37b1d7d8 KW |
1656 | ret = vmdk_write_extent(extent, cluster_offset, offset_in_cluster, |
1657 | qiov, bytes_done, n_bytes, offset); | |
cdeaf1f1 FZ |
1658 | if (ret) { |
1659 | return ret; | |
1660 | } | |
1661 | if (m_data.valid) { | |
1662 | /* update L2 tables */ | |
c6ac36e1 FZ |
1663 | if (vmdk_L2update(extent, &m_data, |
1664 | cluster_offset >> BDRV_SECTOR_BITS) | |
1665 | != VMDK_OK) { | |
cdeaf1f1 FZ |
1666 | return -EIO; |
1667 | } | |
b3976d3c | 1668 | } |
630530a6 | 1669 | } |
37b1d7d8 KW |
1670 | bytes -= n_bytes; |
1671 | offset += n_bytes; | |
1672 | bytes_done += n_bytes; | |
5f4da8c0 | 1673 | |
ae261c86 FZ |
1674 | /* update CID on the first write every time the virtual disk is |
1675 | * opened */ | |
69b4d86d | 1676 | if (!s->cid_updated) { |
e5dc64b8 | 1677 | ret = vmdk_write_cid(bs, g_random_int()); |
99f1835d KW |
1678 | if (ret < 0) { |
1679 | return ret; | |
1680 | } | |
69b4d86d | 1681 | s->cid_updated = true; |
5f4da8c0 | 1682 | } |
ff1afc72 FB |
1683 | } |
1684 | return 0; | |
ea2384d3 FB |
1685 | } |
1686 | ||
37b1d7d8 KW |
1687 | static int coroutine_fn |
1688 | vmdk_co_pwritev(BlockDriverState *bs, uint64_t offset, uint64_t bytes, | |
1689 | QEMUIOVector *qiov, int flags) | |
e183ef75 PB |
1690 | { |
1691 | int ret; | |
1692 | BDRVVmdkState *s = bs->opaque; | |
1693 | qemu_co_mutex_lock(&s->lock); | |
37b1d7d8 | 1694 | ret = vmdk_pwritev(bs, offset, bytes, qiov, false, false); |
cdeaf1f1 FZ |
1695 | qemu_co_mutex_unlock(&s->lock); |
1696 | return ret; | |
1697 | } | |
1698 | ||
b2c622d3 PB |
1699 | static int coroutine_fn |
1700 | vmdk_co_pwritev_compressed(BlockDriverState *bs, uint64_t offset, | |
1701 | uint64_t bytes, QEMUIOVector *qiov) | |
ba0ad89e | 1702 | { |
51b3c6b7 YCL |
1703 | if (bytes == 0) { |
1704 | /* The caller will write bytes 0 to signal EOF. | |
1705 | * When receive it, we align EOF to a sector boundary. */ | |
1706 | BDRVVmdkState *s = bs->opaque; | |
1707 | int i, ret; | |
1708 | int64_t length; | |
1709 | ||
1710 | for (i = 0; i < s->num_extents; i++) { | |
1711 | length = bdrv_getlength(s->extents[i].file->bs); | |
1712 | if (length < 0) { | |
1713 | return length; | |
1714 | } | |
1715 | length = QEMU_ALIGN_UP(length, BDRV_SECTOR_SIZE); | |
1716 | ret = bdrv_truncate(s->extents[i].file, length, | |
1717 | PREALLOC_MODE_OFF, NULL); | |
1718 | if (ret < 0) { | |
1719 | return ret; | |
1720 | } | |
1721 | } | |
1722 | return 0; | |
1723 | } | |
b2c622d3 | 1724 | return vmdk_co_pwritev(bs, offset, bytes, qiov, 0); |
ba0ad89e FZ |
1725 | } |
1726 | ||
a620f2ae EB |
1727 | static int coroutine_fn vmdk_co_pwrite_zeroes(BlockDriverState *bs, |
1728 | int64_t offset, | |
1729 | int bytes, | |
1730 | BdrvRequestFlags flags) | |
cdeaf1f1 FZ |
1731 | { |
1732 | int ret; | |
1733 | BDRVVmdkState *s = bs->opaque; | |
37b1d7d8 | 1734 | |
cdeaf1f1 | 1735 | qemu_co_mutex_lock(&s->lock); |
8e507243 FZ |
1736 | /* write zeroes could fail if sectors not aligned to cluster, test it with |
1737 | * dry_run == true before really updating image */ | |
37b1d7d8 | 1738 | ret = vmdk_pwritev(bs, offset, bytes, NULL, true, true); |
cdeaf1f1 | 1739 | if (!ret) { |
37b1d7d8 | 1740 | ret = vmdk_pwritev(bs, offset, bytes, NULL, true, false); |
cdeaf1f1 | 1741 | } |
e183ef75 PB |
1742 | qemu_co_mutex_unlock(&s->lock); |
1743 | return ret; | |
1744 | } | |
1745 | ||
5be28490 FZ |
1746 | static int vmdk_init_extent(BlockBackend *blk, |
1747 | int64_t filesize, bool flat, | |
1748 | bool compress, bool zeroed_grain, | |
1749 | Error **errp) | |
8979b227 | 1750 | { |
f66fd6c3 | 1751 | int ret, i; |
8979b227 | 1752 | VMDK4Header header; |
917703c1 FZ |
1753 | uint32_t tmp, magic, grains, gd_sectors, gt_size, gt_count; |
1754 | uint32_t *gd_buf = NULL; | |
1755 | int gd_buf_size; | |
0e7e1989 | 1756 | |
f66fd6c3 | 1757 | if (flat) { |
3a691c50 | 1758 | ret = blk_truncate(blk, filesize, PREALLOC_MODE_OFF, errp); |
f66fd6c3 | 1759 | goto exit; |
5f4da8c0 | 1760 | } |
8979b227 FB |
1761 | magic = cpu_to_be32(VMDK4_MAGIC); |
1762 | memset(&header, 0, sizeof(header)); | |
d62d9dc4 FZ |
1763 | if (compress) { |
1764 | header.version = 3; | |
1765 | } else if (zeroed_grain) { | |
1766 | header.version = 2; | |
1767 | } else { | |
1768 | header.version = 1; | |
1769 | } | |
95b0aa42 | 1770 | header.flags = VMDK4_FLAG_RGD | VMDK4_FLAG_NL_DETECT |
69e0b6df FZ |
1771 | | (compress ? VMDK4_FLAG_COMPRESS | VMDK4_FLAG_MARKER : 0) |
1772 | | (zeroed_grain ? VMDK4_FLAG_ZERO_GRAIN : 0); | |
6c031aac | 1773 | header.compressAlgorithm = compress ? VMDK4_COMPRESSION_DEFLATE : 0; |
917703c1 | 1774 | header.capacity = filesize / BDRV_SECTOR_SIZE; |
16372ff0 | 1775 | header.granularity = 128; |
917703c1 | 1776 | header.num_gtes_per_gt = BDRV_SECTOR_SIZE; |
8979b227 | 1777 | |
917703c1 FZ |
1778 | grains = DIV_ROUND_UP(filesize / BDRV_SECTOR_SIZE, header.granularity); |
1779 | gt_size = DIV_ROUND_UP(header.num_gtes_per_gt * sizeof(uint32_t), | |
1780 | BDRV_SECTOR_SIZE); | |
1781 | gt_count = DIV_ROUND_UP(grains, header.num_gtes_per_gt); | |
1782 | gd_sectors = DIV_ROUND_UP(gt_count * sizeof(uint32_t), BDRV_SECTOR_SIZE); | |
8979b227 FB |
1783 | |
1784 | header.desc_offset = 1; | |
1785 | header.desc_size = 20; | |
1786 | header.rgd_offset = header.desc_offset + header.desc_size; | |
917703c1 | 1787 | header.gd_offset = header.rgd_offset + gd_sectors + (gt_size * gt_count); |
8979b227 | 1788 | header.grain_offset = |
917703c1 FZ |
1789 | ROUND_UP(header.gd_offset + gd_sectors + (gt_size * gt_count), |
1790 | header.granularity); | |
16372ff0 AG |
1791 | /* swap endianness for all header fields */ |
1792 | header.version = cpu_to_le32(header.version); | |
1793 | header.flags = cpu_to_le32(header.flags); | |
1794 | header.capacity = cpu_to_le64(header.capacity); | |
1795 | header.granularity = cpu_to_le64(header.granularity); | |
ca8804ce | 1796 | header.num_gtes_per_gt = cpu_to_le32(header.num_gtes_per_gt); |
8979b227 FB |
1797 | header.desc_offset = cpu_to_le64(header.desc_offset); |
1798 | header.desc_size = cpu_to_le64(header.desc_size); | |
1799 | header.rgd_offset = cpu_to_le64(header.rgd_offset); | |
1800 | header.gd_offset = cpu_to_le64(header.gd_offset); | |
1801 | header.grain_offset = cpu_to_le64(header.grain_offset); | |
6c031aac | 1802 | header.compressAlgorithm = cpu_to_le16(header.compressAlgorithm); |
8979b227 FB |
1803 | |
1804 | header.check_bytes[0] = 0xa; | |
1805 | header.check_bytes[1] = 0x20; | |
1806 | header.check_bytes[2] = 0xd; | |
1807 | header.check_bytes[3] = 0xa; | |
3b46e624 TS |
1808 | |
1809 | /* write all the data */ | |
8341f00d | 1810 | ret = blk_pwrite(blk, 0, &magic, sizeof(magic), 0); |
917703c1 | 1811 | if (ret < 0) { |
c6bd8c70 | 1812 | error_setg(errp, QERR_IO_ERROR); |
1640366c KS |
1813 | goto exit; |
1814 | } | |
8341f00d | 1815 | ret = blk_pwrite(blk, sizeof(magic), &header, sizeof(header), 0); |
917703c1 | 1816 | if (ret < 0) { |
c6bd8c70 | 1817 | error_setg(errp, QERR_IO_ERROR); |
1640366c KS |
1818 | goto exit; |
1819 | } | |
8979b227 | 1820 | |
3a691c50 HR |
1821 | ret = blk_truncate(blk, le64_to_cpu(header.grain_offset) << 9, |
1822 | PREALLOC_MODE_OFF, errp); | |
1640366c | 1823 | if (ret < 0) { |
1640366c KS |
1824 | goto exit; |
1825 | } | |
8979b227 FB |
1826 | |
1827 | /* write grain directory */ | |
917703c1 FZ |
1828 | gd_buf_size = gd_sectors * BDRV_SECTOR_SIZE; |
1829 | gd_buf = g_malloc0(gd_buf_size); | |
1830 | for (i = 0, tmp = le64_to_cpu(header.rgd_offset) + gd_sectors; | |
1640366c | 1831 | i < gt_count; i++, tmp += gt_size) { |
917703c1 FZ |
1832 | gd_buf[i] = cpu_to_le32(tmp); |
1833 | } | |
c4bea169 | 1834 | ret = blk_pwrite(blk, le64_to_cpu(header.rgd_offset) * BDRV_SECTOR_SIZE, |
8341f00d | 1835 | gd_buf, gd_buf_size, 0); |
917703c1 | 1836 | if (ret < 0) { |
c6bd8c70 | 1837 | error_setg(errp, QERR_IO_ERROR); |
917703c1 | 1838 | goto exit; |
1640366c | 1839 | } |
3b46e624 | 1840 | |
8979b227 | 1841 | /* write backup grain directory */ |
917703c1 | 1842 | for (i = 0, tmp = le64_to_cpu(header.gd_offset) + gd_sectors; |
1640366c | 1843 | i < gt_count; i++, tmp += gt_size) { |
917703c1 FZ |
1844 | gd_buf[i] = cpu_to_le32(tmp); |
1845 | } | |
c4bea169 | 1846 | ret = blk_pwrite(blk, le64_to_cpu(header.gd_offset) * BDRV_SECTOR_SIZE, |
8341f00d | 1847 | gd_buf, gd_buf_size, 0); |
917703c1 | 1848 | if (ret < 0) { |
c6bd8c70 | 1849 | error_setg(errp, QERR_IO_ERROR); |
1640366c | 1850 | } |
8979b227 | 1851 | |
f66fd6c3 | 1852 | ret = 0; |
5be28490 FZ |
1853 | exit: |
1854 | g_free(gd_buf); | |
1855 | return ret; | |
1856 | } | |
1857 | ||
1858 | static int vmdk_create_extent(const char *filename, int64_t filesize, | |
1859 | bool flat, bool compress, bool zeroed_grain, | |
1860 | BlockBackend **pbb, | |
1861 | QemuOpts *opts, Error **errp) | |
1862 | { | |
1863 | int ret; | |
1864 | BlockBackend *blk = NULL; | |
1865 | Error *local_err = NULL; | |
1866 | ||
1867 | ret = bdrv_create_file(filename, opts, &local_err); | |
1868 | if (ret < 0) { | |
1869 | error_propagate(errp, local_err); | |
1870 | goto exit; | |
1871 | } | |
1872 | ||
1873 | blk = blk_new_open(filename, NULL, NULL, | |
1874 | BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_PROTOCOL, | |
1875 | &local_err); | |
1876 | if (blk == NULL) { | |
1877 | error_propagate(errp, local_err); | |
1878 | ret = -EIO; | |
1879 | goto exit; | |
1880 | } | |
1881 | ||
1882 | blk_set_allow_write_beyond_eof(blk, true); | |
1883 | ||
1884 | ret = vmdk_init_extent(blk, filesize, flat, compress, zeroed_grain, errp); | |
917703c1 | 1885 | exit: |
c4bea169 | 1886 | if (blk) { |
5be28490 FZ |
1887 | if (pbb) { |
1888 | *pbb = blk; | |
1889 | } else { | |
1890 | blk_unref(blk); | |
1891 | blk = NULL; | |
1892 | } | |
917703c1 | 1893 | } |
f66fd6c3 FZ |
1894 | return ret; |
1895 | } | |
1896 | ||
1897 | static int filename_decompose(const char *filename, char *path, char *prefix, | |
4823970b | 1898 | char *postfix, size_t buf_len, Error **errp) |
f66fd6c3 FZ |
1899 | { |
1900 | const char *p, *q; | |
1901 | ||
1902 | if (filename == NULL || !strlen(filename)) { | |
4823970b | 1903 | error_setg(errp, "No filename provided"); |
65f74725 | 1904 | return VMDK_ERROR; |
f66fd6c3 FZ |
1905 | } |
1906 | p = strrchr(filename, '/'); | |
1907 | if (p == NULL) { | |
1908 | p = strrchr(filename, '\\'); | |
1909 | } | |
1910 | if (p == NULL) { | |
1911 | p = strrchr(filename, ':'); | |
1912 | } | |
1913 | if (p != NULL) { | |
1914 | p++; | |
1915 | if (p - filename >= buf_len) { | |
65f74725 | 1916 | return VMDK_ERROR; |
f66fd6c3 FZ |
1917 | } |
1918 | pstrcpy(path, p - filename + 1, filename); | |
1919 | } else { | |
1920 | p = filename; | |
1921 | path[0] = '\0'; | |
1922 | } | |
1923 | q = strrchr(p, '.'); | |
1924 | if (q == NULL) { | |
1925 | pstrcpy(prefix, buf_len, p); | |
1926 | postfix[0] = '\0'; | |
1927 | } else { | |
1928 | if (q - p >= buf_len) { | |
65f74725 | 1929 | return VMDK_ERROR; |
f66fd6c3 FZ |
1930 | } |
1931 | pstrcpy(prefix, q - p + 1, p); | |
1932 | pstrcpy(postfix, buf_len, q); | |
1933 | } | |
65f74725 | 1934 | return VMDK_OK; |
f66fd6c3 FZ |
1935 | } |
1936 | ||
3015372d FZ |
1937 | /* |
1938 | * idx == 0: get or create the descriptor file (also the image file if in a | |
1939 | * non-split format. | |
1940 | * idx >= 1: get the n-th extent if in a split subformat | |
1941 | */ | |
1942 | typedef BlockBackend *(*vmdk_create_extent_fn)(int64_t size, | |
1943 | int idx, | |
1944 | bool flat, | |
1945 | bool split, | |
1946 | bool compress, | |
1947 | bool zeroed_grain, | |
1948 | void *opaque, | |
1949 | Error **errp); | |
1950 | ||
1951 | static void vmdk_desc_add_extent(GString *desc, | |
1952 | const char *extent_line_fmt, | |
1953 | int64_t size, const char *filename) | |
1954 | { | |
1955 | char *basename = g_path_get_basename(filename); | |
1956 | ||
1957 | g_string_append_printf(desc, extent_line_fmt, | |
1958 | DIV_ROUND_UP(size, BDRV_SECTOR_SIZE), basename); | |
1959 | g_free(basename); | |
1960 | } | |
1961 | ||
1962 | static int coroutine_fn vmdk_co_do_create(int64_t size, | |
1963 | BlockdevVmdkSubformat subformat, | |
1964 | BlockdevVmdkAdapterType adapter_type, | |
1965 | const char *backing_file, | |
1966 | const char *hw_version, | |
1967 | bool compat6, | |
1968 | bool zeroed_grain, | |
1969 | vmdk_create_extent_fn extent_fn, | |
1970 | void *opaque, | |
1971 | Error **errp) | |
f66fd6c3 | 1972 | { |
3015372d FZ |
1973 | int extent_idx; |
1974 | BlockBackend *blk = NULL; | |
4a960ece | 1975 | BlockBackend *extent_blk; |
c13959c7 | 1976 | Error *local_err = NULL; |
af057fe7 | 1977 | char *desc = NULL; |
f66fd6c3 | 1978 | int ret = 0; |
6c031aac | 1979 | bool flat, split, compress; |
af057fe7 | 1980 | GString *ext_desc_lines; |
f66fd6c3 | 1981 | const int64_t split_size = 0x80000000; /* VMDK has constant split size */ |
3015372d FZ |
1982 | int64_t extent_size; |
1983 | int64_t created_size = 0; | |
1984 | const char *extent_line_fmt; | |
fe206562 | 1985 | char *parent_desc_line = g_malloc0(BUF_SIZE); |
f66fd6c3 | 1986 | uint32_t parent_cid = 0xffffffff; |
7f2039f6 | 1987 | uint32_t number_heads = 16; |
917703c1 | 1988 | uint32_t desc_offset = 0, desc_len; |
f66fd6c3 FZ |
1989 | const char desc_template[] = |
1990 | "# Disk DescriptorFile\n" | |
1991 | "version=1\n" | |
9b17031a FZ |
1992 | "CID=%" PRIx32 "\n" |
1993 | "parentCID=%" PRIx32 "\n" | |
f66fd6c3 FZ |
1994 | "createType=\"%s\"\n" |
1995 | "%s" | |
1996 | "\n" | |
1997 | "# Extent description\n" | |
1998 | "%s" | |
1999 | "\n" | |
2000 | "# The Disk Data Base\n" | |
2001 | "#DDB\n" | |
2002 | "\n" | |
f249924e | 2003 | "ddb.virtualHWVersion = \"%s\"\n" |
f66fd6c3 | 2004 | "ddb.geometry.cylinders = \"%" PRId64 "\"\n" |
4ab9dab5 | 2005 | "ddb.geometry.heads = \"%" PRIu32 "\"\n" |
f66fd6c3 | 2006 | "ddb.geometry.sectors = \"63\"\n" |
7f2039f6 | 2007 | "ddb.adapterType = \"%s\"\n"; |
f66fd6c3 | 2008 | |
af057fe7 FZ |
2009 | ext_desc_lines = g_string_new(NULL); |
2010 | ||
f66fd6c3 | 2011 | /* Read out options */ |
3015372d FZ |
2012 | if (compat6) { |
2013 | if (hw_version) { | |
f249924e JK |
2014 | error_setg(errp, |
2015 | "compat6 cannot be enabled with hwversion set"); | |
2016 | ret = -EINVAL; | |
2017 | goto exit; | |
2018 | } | |
3015372d | 2019 | hw_version = "6"; |
5820f1da | 2020 | } |
3015372d FZ |
2021 | if (!hw_version) { |
2022 | hw_version = "4"; | |
f66fd6c3 | 2023 | } |
5820f1da | 2024 | |
3015372d | 2025 | if (adapter_type != BLOCKDEV_VMDK_ADAPTER_TYPE_IDE) { |
7f2039f6 OP |
2026 | /* that's the number of heads with which vmware operates when |
2027 | creating, exporting, etc. vmdk files with a non-ide adapter type */ | |
2028 | number_heads = 255; | |
2029 | } | |
3015372d FZ |
2030 | split = (subformat == BLOCKDEV_VMDK_SUBFORMAT_TWOGBMAXEXTENTFLAT) || |
2031 | (subformat == BLOCKDEV_VMDK_SUBFORMAT_TWOGBMAXEXTENTSPARSE); | |
2032 | flat = (subformat == BLOCKDEV_VMDK_SUBFORMAT_MONOLITHICFLAT) || | |
2033 | (subformat == BLOCKDEV_VMDK_SUBFORMAT_TWOGBMAXEXTENTFLAT); | |
2034 | compress = subformat == BLOCKDEV_VMDK_SUBFORMAT_STREAMOPTIMIZED; | |
2035 | ||
f66fd6c3 | 2036 | if (flat) { |
3015372d | 2037 | extent_line_fmt = "RW %" PRId64 " FLAT \"%s\" 0\n"; |
f66fd6c3 | 2038 | } else { |
3015372d | 2039 | extent_line_fmt = "RW %" PRId64 " SPARSE \"%s\"\n"; |
f66fd6c3 FZ |
2040 | } |
2041 | if (flat && backing_file) { | |
4823970b | 2042 | error_setg(errp, "Flat image can't have backing file"); |
af057fe7 FZ |
2043 | ret = -ENOTSUP; |
2044 | goto exit; | |
f66fd6c3 | 2045 | } |
52c8d629 FZ |
2046 | if (flat && zeroed_grain) { |
2047 | error_setg(errp, "Flat image can't enable zeroed grain"); | |
af057fe7 FZ |
2048 | ret = -ENOTSUP; |
2049 | goto exit; | |
52c8d629 | 2050 | } |
3015372d FZ |
2051 | |
2052 | /* Create extents */ | |
2053 | if (split) { | |
2054 | extent_size = split_size; | |
2055 | } else { | |
2056 | extent_size = size; | |
2057 | } | |
2058 | if (!split && !flat) { | |
2059 | created_size = extent_size; | |
2060 | } else { | |
2061 | created_size = 0; | |
2062 | } | |
2063 | /* Get the descriptor file BDS */ | |
2064 | blk = extent_fn(created_size, 0, flat, split, compress, zeroed_grain, | |
2065 | opaque, errp); | |
2066 | if (!blk) { | |
2067 | ret = -EIO; | |
2068 | goto exit; | |
2069 | } | |
2070 | if (!split && !flat) { | |
2071 | vmdk_desc_add_extent(ext_desc_lines, extent_line_fmt, created_size, | |
2072 | blk_bs(blk)->filename); | |
2073 | } | |
2074 | ||
f66fd6c3 | 2075 | if (backing_file) { |
3015372d | 2076 | BlockBackend *backing; |
645ae7d8 HR |
2077 | char *full_backing = |
2078 | bdrv_get_full_backing_filename_from_filename(blk_bs(blk)->filename, | |
2079 | backing_file, | |
2080 | &local_err); | |
1085daf9 | 2081 | if (local_err) { |
1085daf9 HR |
2082 | error_propagate(errp, local_err); |
2083 | ret = -ENOENT; | |
2084 | goto exit; | |
2085 | } | |
645ae7d8 | 2086 | assert(full_backing); |
c4bea169 | 2087 | |
3015372d FZ |
2088 | backing = blk_new_open(full_backing, NULL, NULL, |
2089 | BDRV_O_NO_BACKING, errp); | |
1085daf9 | 2090 | g_free(full_backing); |
3015372d | 2091 | if (backing == NULL) { |
c4bea169 | 2092 | ret = -EIO; |
af057fe7 | 2093 | goto exit; |
f66fd6c3 | 2094 | } |
3015372d FZ |
2095 | if (strcmp(blk_bs(backing)->drv->format_name, "vmdk")) { |
2096 | error_setg(errp, "Invalid backing file format: %s. Must be vmdk", | |
2097 | blk_bs(backing)->drv->format_name); | |
2098 | blk_unref(backing); | |
af057fe7 FZ |
2099 | ret = -EINVAL; |
2100 | goto exit; | |
f66fd6c3 | 2101 | } |
3015372d FZ |
2102 | ret = vmdk_read_cid(blk_bs(backing), 0, &parent_cid); |
2103 | blk_unref(backing); | |
9877860e | 2104 | if (ret) { |
3015372d | 2105 | error_setg(errp, "Failed to read parent CID"); |
9877860e PM |
2106 | goto exit; |
2107 | } | |
fe206562 | 2108 | snprintf(parent_desc_line, BUF_SIZE, |
8ed610a1 | 2109 | "parentFileNameHint=\"%s\"", backing_file); |
f66fd6c3 | 2110 | } |
3015372d FZ |
2111 | extent_idx = 1; |
2112 | while (created_size < size) { | |
3015372d FZ |
2113 | int64_t cur_size = MIN(size - created_size, extent_size); |
2114 | extent_blk = extent_fn(cur_size, extent_idx, flat, split, compress, | |
2115 | zeroed_grain, opaque, errp); | |
2116 | if (!extent_blk) { | |
af057fe7 FZ |
2117 | ret = -EINVAL; |
2118 | goto exit; | |
f66fd6c3 | 2119 | } |
3015372d FZ |
2120 | vmdk_desc_add_extent(ext_desc_lines, extent_line_fmt, cur_size, |
2121 | blk_bs(extent_blk)->filename); | |
2122 | created_size += cur_size; | |
2123 | extent_idx++; | |
2124 | blk_unref(extent_blk); | |
f66fd6c3 | 2125 | } |
4a960ece KW |
2126 | |
2127 | /* Check whether we got excess extents */ | |
2128 | extent_blk = extent_fn(-1, extent_idx, flat, split, compress, zeroed_grain, | |
2129 | opaque, NULL); | |
2130 | if (extent_blk) { | |
2131 | blk_unref(extent_blk); | |
2132 | error_setg(errp, "List of extents contains unused extents"); | |
2133 | ret = -EINVAL; | |
2134 | goto exit; | |
2135 | } | |
2136 | ||
f66fd6c3 | 2137 | /* generate descriptor file */ |
af057fe7 | 2138 | desc = g_strdup_printf(desc_template, |
e5dc64b8 | 2139 | g_random_int(), |
af057fe7 | 2140 | parent_cid, |
3015372d | 2141 | BlockdevVmdkSubformat_str(subformat), |
af057fe7 FZ |
2142 | parent_desc_line, |
2143 | ext_desc_lines->str, | |
f249924e | 2144 | hw_version, |
3015372d | 2145 | size / |
917703c1 | 2146 | (int64_t)(63 * number_heads * BDRV_SECTOR_SIZE), |
af057fe7 | 2147 | number_heads, |
3015372d | 2148 | BlockdevVmdkAdapterType_str(adapter_type)); |
917703c1 FZ |
2149 | desc_len = strlen(desc); |
2150 | /* the descriptor offset = 0x200 */ | |
2151 | if (!split && !flat) { | |
2152 | desc_offset = 0x200; | |
3015372d FZ |
2153 | } |
2154 | ||
2155 | ret = blk_pwrite(blk, desc_offset, desc, desc_len, 0); | |
2156 | if (ret < 0) { | |
2157 | error_setg_errno(errp, -ret, "Could not write description"); | |
2158 | goto exit; | |
2159 | } | |
2160 | /* bdrv_pwrite write padding zeros to align to sector, we don't need that | |
2161 | * for description file */ | |
2162 | if (desc_offset == 0) { | |
2163 | ret = blk_truncate(blk, desc_len, PREALLOC_MODE_OFF, errp); | |
917703c1 | 2164 | if (ret < 0) { |
917703c1 FZ |
2165 | goto exit; |
2166 | } | |
f66fd6c3 | 2167 | } |
3015372d FZ |
2168 | ret = 0; |
2169 | exit: | |
2170 | if (blk) { | |
2171 | blk_unref(blk); | |
2172 | } | |
2173 | g_free(desc); | |
2174 | g_free(parent_desc_line); | |
2175 | g_string_free(ext_desc_lines, true); | |
2176 | return ret; | |
2177 | } | |
c4bea169 | 2178 | |
3015372d FZ |
2179 | typedef struct { |
2180 | char *path; | |
2181 | char *prefix; | |
2182 | char *postfix; | |
2183 | QemuOpts *opts; | |
2184 | } VMDKCreateOptsData; | |
2185 | ||
2186 | static BlockBackend *vmdk_co_create_opts_cb(int64_t size, int idx, | |
2187 | bool flat, bool split, bool compress, | |
2188 | bool zeroed_grain, void *opaque, | |
2189 | Error **errp) | |
2190 | { | |
2191 | BlockBackend *blk = NULL; | |
2192 | BlockDriverState *bs = NULL; | |
2193 | VMDKCreateOptsData *data = opaque; | |
2194 | char *ext_filename = NULL; | |
2195 | char *rel_filename = NULL; | |
2196 | ||
4a960ece KW |
2197 | /* We're done, don't create excess extents. */ |
2198 | if (size == -1) { | |
2199 | assert(errp == NULL); | |
2200 | return NULL; | |
2201 | } | |
2202 | ||
3015372d FZ |
2203 | if (idx == 0) { |
2204 | rel_filename = g_strdup_printf("%s%s", data->prefix, data->postfix); | |
2205 | } else if (split) { | |
2206 | rel_filename = g_strdup_printf("%s-%c%03d%s", | |
2207 | data->prefix, | |
2208 | flat ? 'f' : 's', idx, data->postfix); | |
2209 | } else { | |
2210 | assert(idx == 1); | |
2211 | rel_filename = g_strdup_printf("%s-flat%s", data->prefix, data->postfix); | |
2212 | } | |
2213 | ||
2214 | ext_filename = g_strdup_printf("%s%s", data->path, rel_filename); | |
2215 | g_free(rel_filename); | |
2216 | ||
2217 | if (vmdk_create_extent(ext_filename, size, | |
2218 | flat, compress, zeroed_grain, &blk, data->opts, | |
2219 | errp)) { | |
af057fe7 | 2220 | goto exit; |
f66fd6c3 | 2221 | } |
3015372d FZ |
2222 | bdrv_unref(bs); |
2223 | exit: | |
2224 | g_free(ext_filename); | |
2225 | return blk; | |
2226 | } | |
c4bea169 | 2227 | |
3015372d FZ |
2228 | static int coroutine_fn vmdk_co_create_opts(const char *filename, QemuOpts *opts, |
2229 | Error **errp) | |
2230 | { | |
2231 | Error *local_err = NULL; | |
2232 | char *desc = NULL; | |
2233 | int64_t total_size = 0; | |
2234 | char *adapter_type = NULL; | |
2235 | BlockdevVmdkAdapterType adapter_type_enum; | |
2236 | char *backing_file = NULL; | |
2237 | char *hw_version = NULL; | |
2238 | char *fmt = NULL; | |
2239 | BlockdevVmdkSubformat subformat; | |
2240 | int ret = 0; | |
2241 | char *path = g_malloc0(PATH_MAX); | |
2242 | char *prefix = g_malloc0(PATH_MAX); | |
2243 | char *postfix = g_malloc0(PATH_MAX); | |
2244 | char *desc_line = g_malloc0(BUF_SIZE); | |
2245 | char *ext_filename = g_malloc0(PATH_MAX); | |
2246 | char *desc_filename = g_malloc0(PATH_MAX); | |
2247 | char *parent_desc_line = g_malloc0(BUF_SIZE); | |
2248 | bool zeroed_grain; | |
2249 | bool compat6; | |
2250 | VMDKCreateOptsData data; | |
c4bea169 | 2251 | |
3015372d FZ |
2252 | if (filename_decompose(filename, path, prefix, postfix, PATH_MAX, errp)) { |
2253 | ret = -EINVAL; | |
917703c1 | 2254 | goto exit; |
f66fd6c3 | 2255 | } |
3015372d FZ |
2256 | /* Read out options */ |
2257 | total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), | |
2258 | BDRV_SECTOR_SIZE); | |
2259 | adapter_type = qemu_opt_get_del(opts, BLOCK_OPT_ADAPTER_TYPE); | |
2260 | backing_file = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FILE); | |
2261 | hw_version = qemu_opt_get_del(opts, BLOCK_OPT_HWVERSION); | |
2262 | compat6 = qemu_opt_get_bool_del(opts, BLOCK_OPT_COMPAT6, false); | |
2263 | if (strcmp(hw_version, "undefined") == 0) { | |
2264 | g_free(hw_version); | |
26c9296c | 2265 | hw_version = NULL; |
1640366c | 2266 | } |
3015372d FZ |
2267 | fmt = qemu_opt_get_del(opts, BLOCK_OPT_SUBFMT); |
2268 | zeroed_grain = qemu_opt_get_bool_del(opts, BLOCK_OPT_ZEROED_GRAIN, false); | |
2269 | ||
2270 | if (adapter_type) { | |
2271 | adapter_type_enum = qapi_enum_parse(&BlockdevVmdkAdapterType_lookup, | |
2272 | adapter_type, | |
2273 | BLOCKDEV_VMDK_ADAPTER_TYPE_IDE, | |
2274 | &local_err); | |
2275 | if (local_err) { | |
2276 | error_propagate(errp, local_err); | |
2277 | ret = -EINVAL; | |
2278 | goto exit; | |
2279 | } | |
2280 | } else { | |
2281 | adapter_type_enum = BLOCKDEV_VMDK_ADAPTER_TYPE_IDE; | |
917703c1 | 2282 | } |
3015372d FZ |
2283 | |
2284 | if (!fmt) { | |
2285 | /* Default format to monolithicSparse */ | |
2286 | subformat = BLOCKDEV_VMDK_SUBFORMAT_MONOLITHICSPARSE; | |
2287 | } else { | |
2288 | subformat = qapi_enum_parse(&BlockdevVmdkSubformat_lookup, | |
2289 | fmt, | |
2290 | BLOCKDEV_VMDK_SUBFORMAT_MONOLITHICSPARSE, | |
2291 | &local_err); | |
2292 | if (local_err) { | |
2293 | error_propagate(errp, local_err); | |
2294 | ret = -EINVAL; | |
2295 | goto exit; | |
2296 | } | |
2297 | } | |
2298 | data = (VMDKCreateOptsData){ | |
2299 | .prefix = prefix, | |
2300 | .postfix = postfix, | |
2301 | .path = path, | |
2302 | .opts = opts, | |
2303 | }; | |
2304 | ret = vmdk_co_do_create(total_size, subformat, adapter_type_enum, | |
2305 | backing_file, hw_version, compat6, zeroed_grain, | |
2306 | vmdk_co_create_opts_cb, &data, errp); | |
2307 | ||
2308 | exit: | |
5820f1da CL |
2309 | g_free(adapter_type); |
2310 | g_free(backing_file); | |
f249924e | 2311 | g_free(hw_version); |
5820f1da | 2312 | g_free(fmt); |
af057fe7 | 2313 | g_free(desc); |
fe206562 JC |
2314 | g_free(path); |
2315 | g_free(prefix); | |
2316 | g_free(postfix); | |
2317 | g_free(desc_line); | |
2318 | g_free(ext_filename); | |
2319 | g_free(desc_filename); | |
2320 | g_free(parent_desc_line); | |
3015372d FZ |
2321 | return ret; |
2322 | } | |
2323 | ||
2324 | static BlockBackend *vmdk_co_create_cb(int64_t size, int idx, | |
2325 | bool flat, bool split, bool compress, | |
2326 | bool zeroed_grain, void *opaque, | |
2327 | Error **errp) | |
2328 | { | |
2329 | int ret; | |
2330 | BlockDriverState *bs; | |
2331 | BlockBackend *blk; | |
2332 | BlockdevCreateOptionsVmdk *opts = opaque; | |
2333 | ||
2334 | if (idx == 0) { | |
2335 | bs = bdrv_open_blockdev_ref(opts->file, errp); | |
2336 | } else { | |
2337 | int i; | |
2338 | BlockdevRefList *list = opts->extents; | |
2339 | for (i = 1; i < idx; i++) { | |
2340 | if (!list || !list->next) { | |
2341 | error_setg(errp, "Extent [%d] not specified", i); | |
2342 | return NULL; | |
2343 | } | |
2344 | list = list->next; | |
2345 | } | |
2346 | if (!list) { | |
2347 | error_setg(errp, "Extent [%d] not specified", idx - 1); | |
2348 | return NULL; | |
2349 | } | |
2350 | bs = bdrv_open_blockdev_ref(list->value, errp); | |
2351 | } | |
2352 | if (!bs) { | |
2353 | return NULL; | |
2354 | } | |
2355 | blk = blk_new(BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE | BLK_PERM_RESIZE, | |
2356 | BLK_PERM_ALL); | |
2357 | if (blk_insert_bs(blk, bs, errp)) { | |
2358 | bdrv_unref(bs); | |
2359 | return NULL; | |
2360 | } | |
2361 | blk_set_allow_write_beyond_eof(blk, true); | |
2362 | bdrv_unref(bs); | |
2363 | ||
4a960ece KW |
2364 | if (size != -1) { |
2365 | ret = vmdk_init_extent(blk, size, flat, compress, zeroed_grain, errp); | |
2366 | if (ret) { | |
2367 | blk_unref(blk); | |
2368 | blk = NULL; | |
2369 | } | |
3015372d FZ |
2370 | } |
2371 | return blk; | |
2372 | } | |
2373 | ||
2374 | static int coroutine_fn vmdk_co_create(BlockdevCreateOptions *create_options, | |
2375 | Error **errp) | |
2376 | { | |
2377 | int ret; | |
2378 | BlockdevCreateOptionsVmdk *opts; | |
2379 | ||
2380 | opts = &create_options->u.vmdk; | |
2381 | ||
2382 | /* Validate options */ | |
2383 | if (!QEMU_IS_ALIGNED(opts->size, BDRV_SECTOR_SIZE)) { | |
2384 | error_setg(errp, "Image size must be a multiple of 512 bytes"); | |
2385 | ret = -EINVAL; | |
2386 | goto out; | |
2387 | } | |
2388 | ||
2389 | ret = vmdk_co_do_create(opts->size, | |
2390 | opts->subformat, | |
2391 | opts->adapter_type, | |
2392 | opts->backing_file, | |
2393 | opts->hwversion, | |
2394 | false, | |
2395 | opts->zeroed_grain, | |
2396 | vmdk_co_create_cb, | |
2397 | opts, errp); | |
2398 | return ret; | |
2399 | ||
2400 | out: | |
1640366c | 2401 | return ret; |
8979b227 FB |
2402 | } |
2403 | ||
e2731add | 2404 | static void vmdk_close(BlockDriverState *bs) |
ea2384d3 | 2405 | { |
2bc3166c KW |
2406 | BDRVVmdkState *s = bs->opaque; |
2407 | ||
b3976d3c | 2408 | vmdk_free_extents(bs); |
f4c129a3 | 2409 | g_free(s->create_type); |
2bc3166c KW |
2410 | |
2411 | migrate_del_blocker(s->migration_blocker); | |
2412 | error_free(s->migration_blocker); | |
ea2384d3 FB |
2413 | } |
2414 | ||
8b94ff85 | 2415 | static coroutine_fn int vmdk_co_flush(BlockDriverState *bs) |
7a6cba61 | 2416 | { |
333c574d | 2417 | BDRVVmdkState *s = bs->opaque; |
29cdb251 PB |
2418 | int i, err; |
2419 | int ret = 0; | |
333c574d | 2420 | |
333c574d | 2421 | for (i = 0; i < s->num_extents; i++) { |
24bc15d1 | 2422 | err = bdrv_co_flush(s->extents[i].file->bs); |
333c574d FZ |
2423 | if (err < 0) { |
2424 | ret = err; | |
2425 | } | |
2426 | } | |
2427 | return ret; | |
7a6cba61 PB |
2428 | } |
2429 | ||
4a1d5e1f FZ |
2430 | static int64_t vmdk_get_allocated_file_size(BlockDriverState *bs) |
2431 | { | |
2432 | int i; | |
2433 | int64_t ret = 0; | |
2434 | int64_t r; | |
2435 | BDRVVmdkState *s = bs->opaque; | |
2436 | ||
9a4f4c31 | 2437 | ret = bdrv_get_allocated_file_size(bs->file->bs); |
4a1d5e1f FZ |
2438 | if (ret < 0) { |
2439 | return ret; | |
2440 | } | |
2441 | for (i = 0; i < s->num_extents; i++) { | |
9a4f4c31 | 2442 | if (s->extents[i].file == bs->file) { |
4a1d5e1f FZ |
2443 | continue; |
2444 | } | |
24bc15d1 | 2445 | r = bdrv_get_allocated_file_size(s->extents[i].file->bs); |
4a1d5e1f FZ |
2446 | if (r < 0) { |
2447 | return r; | |
2448 | } | |
2449 | ret += r; | |
2450 | } | |
2451 | return ret; | |
2452 | } | |
0e7e1989 | 2453 | |
da7a50f9 FZ |
2454 | static int vmdk_has_zero_init(BlockDriverState *bs) |
2455 | { | |
2456 | int i; | |
2457 | BDRVVmdkState *s = bs->opaque; | |
2458 | ||
2459 | /* If has a flat extent and its underlying storage doesn't have zero init, | |
2460 | * return 0. */ | |
2461 | for (i = 0; i < s->num_extents; i++) { | |
2462 | if (s->extents[i].flat) { | |
24bc15d1 | 2463 | if (!bdrv_has_zero_init(s->extents[i].file->bs)) { |
da7a50f9 FZ |
2464 | return 0; |
2465 | } | |
2466 | } | |
2467 | } | |
2468 | return 1; | |
2469 | } | |
2470 | ||
f4c129a3 FZ |
2471 | static ImageInfo *vmdk_get_extent_info(VmdkExtent *extent) |
2472 | { | |
2473 | ImageInfo *info = g_new0(ImageInfo, 1); | |
2474 | ||
f30c66ba | 2475 | bdrv_refresh_filename(extent->file->bs); |
f4c129a3 | 2476 | *info = (ImageInfo){ |
24bc15d1 | 2477 | .filename = g_strdup(extent->file->bs->filename), |
f4c129a3 FZ |
2478 | .format = g_strdup(extent->type), |
2479 | .virtual_size = extent->sectors * BDRV_SECTOR_SIZE, | |
2480 | .compressed = extent->compressed, | |
2481 | .has_compressed = extent->compressed, | |
2482 | .cluster_size = extent->cluster_sectors * BDRV_SECTOR_SIZE, | |
2483 | .has_cluster_size = !extent->flat, | |
2484 | }; | |
2485 | ||
2486 | return info; | |
2487 | } | |
2488 | ||
2fd61638 PB |
2489 | static int coroutine_fn vmdk_co_check(BlockDriverState *bs, |
2490 | BdrvCheckResult *result, | |
2491 | BdrvCheckMode fix) | |
f43aa8e1 PL |
2492 | { |
2493 | BDRVVmdkState *s = bs->opaque; | |
2494 | VmdkExtent *extent = NULL; | |
2495 | int64_t sector_num = 0; | |
57322b78 | 2496 | int64_t total_sectors = bdrv_nb_sectors(bs); |
f43aa8e1 PL |
2497 | int ret; |
2498 | uint64_t cluster_offset; | |
2499 | ||
2500 | if (fix) { | |
2501 | return -ENOTSUP; | |
2502 | } | |
2503 | ||
2504 | for (;;) { | |
2505 | if (sector_num >= total_sectors) { | |
2506 | return 0; | |
2507 | } | |
2508 | extent = find_extent(s, sector_num, extent); | |
2509 | if (!extent) { | |
2510 | fprintf(stderr, | |
2511 | "ERROR: could not find extent for sector %" PRId64 "\n", | |
2512 | sector_num); | |
0e51b9b7 | 2513 | ret = -EINVAL; |
f43aa8e1 PL |
2514 | break; |
2515 | } | |
2516 | ret = get_cluster_offset(bs, extent, NULL, | |
2517 | sector_num << BDRV_SECTOR_BITS, | |
c6ac36e1 | 2518 | false, &cluster_offset, 0, 0); |
f43aa8e1 PL |
2519 | if (ret == VMDK_ERROR) { |
2520 | fprintf(stderr, | |
2521 | "ERROR: could not get cluster_offset for sector %" | |
2522 | PRId64 "\n", sector_num); | |
2523 | break; | |
2524 | } | |
0e51b9b7 FZ |
2525 | if (ret == VMDK_OK) { |
2526 | int64_t extent_len = bdrv_getlength(extent->file->bs); | |
2527 | if (extent_len < 0) { | |
2528 | fprintf(stderr, | |
2529 | "ERROR: could not get extent file length for sector %" | |
2530 | PRId64 "\n", sector_num); | |
2531 | ret = extent_len; | |
2532 | break; | |
2533 | } | |
2534 | if (cluster_offset >= extent_len) { | |
2535 | fprintf(stderr, | |
2536 | "ERROR: cluster offset for sector %" | |
2537 | PRId64 " points after EOF\n", sector_num); | |
2538 | ret = -EINVAL; | |
2539 | break; | |
2540 | } | |
f43aa8e1 PL |
2541 | } |
2542 | sector_num += extent->cluster_sectors; | |
2543 | } | |
2544 | ||
2545 | result->corruptions++; | |
0e51b9b7 | 2546 | return ret; |
f43aa8e1 PL |
2547 | } |
2548 | ||
1bf6e9ca AS |
2549 | static ImageInfoSpecific *vmdk_get_specific_info(BlockDriverState *bs, |
2550 | Error **errp) | |
f4c129a3 FZ |
2551 | { |
2552 | int i; | |
2553 | BDRVVmdkState *s = bs->opaque; | |
2554 | ImageInfoSpecific *spec_info = g_new0(ImageInfoSpecific, 1); | |
2555 | ImageInfoList **next; | |
2556 | ||
2557 | *spec_info = (ImageInfoSpecific){ | |
6a8f9661 | 2558 | .type = IMAGE_INFO_SPECIFIC_KIND_VMDK, |
32bafa8f EB |
2559 | .u = { |
2560 | .vmdk.data = g_new0(ImageInfoSpecificVmdk, 1), | |
f4c129a3 FZ |
2561 | }, |
2562 | }; | |
2563 | ||
32bafa8f | 2564 | *spec_info->u.vmdk.data = (ImageInfoSpecificVmdk) { |
f4c129a3 FZ |
2565 | .create_type = g_strdup(s->create_type), |
2566 | .cid = s->cid, | |
2567 | .parent_cid = s->parent_cid, | |
2568 | }; | |
2569 | ||
32bafa8f | 2570 | next = &spec_info->u.vmdk.data->extents; |
f4c129a3 FZ |
2571 | for (i = 0; i < s->num_extents; i++) { |
2572 | *next = g_new0(ImageInfoList, 1); | |
2573 | (*next)->value = vmdk_get_extent_info(&s->extents[i]); | |
2574 | (*next)->next = NULL; | |
2575 | next = &(*next)->next; | |
2576 | } | |
2577 | ||
2578 | return spec_info; | |
2579 | } | |
2580 | ||
5f583307 FZ |
2581 | static bool vmdk_extents_type_eq(const VmdkExtent *a, const VmdkExtent *b) |
2582 | { | |
2583 | return a->flat == b->flat && | |
2584 | a->compressed == b->compressed && | |
2585 | (a->flat || a->cluster_sectors == b->cluster_sectors); | |
2586 | } | |
2587 | ||
74fe188c FZ |
2588 | static int vmdk_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) |
2589 | { | |
2590 | int i; | |
2591 | BDRVVmdkState *s = bs->opaque; | |
2592 | assert(s->num_extents); | |
5f583307 | 2593 | |
74fe188c FZ |
2594 | /* See if we have multiple extents but they have different cases */ |
2595 | for (i = 1; i < s->num_extents; i++) { | |
5f583307 | 2596 | if (!vmdk_extents_type_eq(&s->extents[0], &s->extents[i])) { |
74fe188c FZ |
2597 | return -ENOTSUP; |
2598 | } | |
2599 | } | |
5f583307 FZ |
2600 | bdi->needs_compressed_writes = s->extents[0].compressed; |
2601 | if (!s->extents[0].flat) { | |
2602 | bdi->cluster_size = s->extents[0].cluster_sectors << BDRV_SECTOR_BITS; | |
2603 | } | |
74fe188c FZ |
2604 | return 0; |
2605 | } | |
2606 | ||
abc521a9 HR |
2607 | static void vmdk_gather_child_options(BlockDriverState *bs, QDict *target, |
2608 | bool backing_overridden) | |
2609 | { | |
2610 | /* No children but file and backing can be explicitly specified (TODO) */ | |
2611 | qdict_put(target, "file", | |
2612 | qobject_ref(bs->file->bs->full_open_options)); | |
2613 | ||
2614 | if (backing_overridden) { | |
2615 | if (bs->backing) { | |
2616 | qdict_put(target, "backing", | |
2617 | qobject_ref(bs->backing->bs->full_open_options)); | |
2618 | } else { | |
2619 | qdict_put_null(target, "backing"); | |
2620 | } | |
2621 | } | |
2622 | } | |
2623 | ||
5820f1da CL |
2624 | static QemuOptsList vmdk_create_opts = { |
2625 | .name = "vmdk-create-opts", | |
2626 | .head = QTAILQ_HEAD_INITIALIZER(vmdk_create_opts.head), | |
2627 | .desc = { | |
2628 | { | |
2629 | .name = BLOCK_OPT_SIZE, | |
2630 | .type = QEMU_OPT_SIZE, | |
2631 | .help = "Virtual disk size" | |
2632 | }, | |
2633 | { | |
2634 | .name = BLOCK_OPT_ADAPTER_TYPE, | |
2635 | .type = QEMU_OPT_STRING, | |
2636 | .help = "Virtual adapter type, can be one of " | |
2637 | "ide (default), lsilogic, buslogic or legacyESX" | |
2638 | }, | |
2639 | { | |
2640 | .name = BLOCK_OPT_BACKING_FILE, | |
2641 | .type = QEMU_OPT_STRING, | |
2642 | .help = "File name of a base image" | |
2643 | }, | |
2644 | { | |
2645 | .name = BLOCK_OPT_COMPAT6, | |
2646 | .type = QEMU_OPT_BOOL, | |
2647 | .help = "VMDK version 6 image", | |
2648 | .def_value_str = "off" | |
2649 | }, | |
f249924e JK |
2650 | { |
2651 | .name = BLOCK_OPT_HWVERSION, | |
2652 | .type = QEMU_OPT_STRING, | |
2653 | .help = "VMDK hardware version", | |
2654 | .def_value_str = "undefined" | |
2655 | }, | |
5820f1da CL |
2656 | { |
2657 | .name = BLOCK_OPT_SUBFMT, | |
2658 | .type = QEMU_OPT_STRING, | |
2659 | .help = | |
2660 | "VMDK flat extent format, can be one of " | |
2661 | "{monolithicSparse (default) | monolithicFlat | twoGbMaxExtentSparse | twoGbMaxExtentFlat | streamOptimized} " | |
2662 | }, | |
2663 | { | |
2664 | .name = BLOCK_OPT_ZEROED_GRAIN, | |
2665 | .type = QEMU_OPT_BOOL, | |
2666 | .help = "Enable efficient zero writes " | |
2667 | "using the zeroed-grain GTE feature" | |
2668 | }, | |
2669 | { /* end of list */ } | |
2670 | } | |
0e7e1989 KW |
2671 | }; |
2672 | ||
5efa9d5a | 2673 | static BlockDriver bdrv_vmdk = { |
da7a50f9 FZ |
2674 | .format_name = "vmdk", |
2675 | .instance_size = sizeof(BDRVVmdkState), | |
2676 | .bdrv_probe = vmdk_probe, | |
2677 | .bdrv_open = vmdk_open, | |
2fd61638 | 2678 | .bdrv_co_check = vmdk_co_check, |
da7a50f9 | 2679 | .bdrv_reopen_prepare = vmdk_reopen_prepare, |
862f215f | 2680 | .bdrv_child_perm = bdrv_format_default_perms, |
f10cc243 | 2681 | .bdrv_co_preadv = vmdk_co_preadv, |
37b1d7d8 | 2682 | .bdrv_co_pwritev = vmdk_co_pwritev, |
b2c622d3 | 2683 | .bdrv_co_pwritev_compressed = vmdk_co_pwritev_compressed, |
a620f2ae | 2684 | .bdrv_co_pwrite_zeroes = vmdk_co_pwrite_zeroes, |
da7a50f9 | 2685 | .bdrv_close = vmdk_close, |
efc75e2a | 2686 | .bdrv_co_create_opts = vmdk_co_create_opts, |
3015372d | 2687 | .bdrv_co_create = vmdk_co_create, |
da7a50f9 | 2688 | .bdrv_co_flush_to_disk = vmdk_co_flush, |
c72080b9 | 2689 | .bdrv_co_block_status = vmdk_co_block_status, |
da7a50f9 FZ |
2690 | .bdrv_get_allocated_file_size = vmdk_get_allocated_file_size, |
2691 | .bdrv_has_zero_init = vmdk_has_zero_init, | |
f4c129a3 | 2692 | .bdrv_get_specific_info = vmdk_get_specific_info, |
d34682cd | 2693 | .bdrv_refresh_limits = vmdk_refresh_limits, |
74fe188c | 2694 | .bdrv_get_info = vmdk_get_info, |
abc521a9 | 2695 | .bdrv_gather_child_options = vmdk_gather_child_options, |
da7a50f9 | 2696 | |
8ee79e70 | 2697 | .supports_backing = true, |
5820f1da | 2698 | .create_opts = &vmdk_create_opts, |
ea2384d3 | 2699 | }; |
5efa9d5a AL |
2700 | |
2701 | static void bdrv_vmdk_init(void) | |
2702 | { | |
2703 | bdrv_register(&bdrv_vmdk); | |
2704 | } | |
2705 | ||
2706 | block_init(bdrv_vmdk_init); |