1019d6b8fSAnthony Liguori /* 2019d6b8fSAnthony Liguori * Block driver for the VMDK format 3019d6b8fSAnthony Liguori * 4019d6b8fSAnthony Liguori * Copyright (c) 2004 Fabrice Bellard 5019d6b8fSAnthony Liguori * Copyright (c) 2005 Filip Navara 6019d6b8fSAnthony Liguori * 7019d6b8fSAnthony Liguori * Permission is hereby granted, free of charge, to any person obtaining a copy 8019d6b8fSAnthony Liguori * of this software and associated documentation files (the "Software"), to deal 9019d6b8fSAnthony Liguori * in the Software without restriction, including without limitation the rights 10019d6b8fSAnthony Liguori * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 11019d6b8fSAnthony Liguori * copies of the Software, and to permit persons to whom the Software is 12019d6b8fSAnthony Liguori * furnished to do so, subject to the following conditions: 13019d6b8fSAnthony Liguori * 14019d6b8fSAnthony Liguori * The above copyright notice and this permission notice shall be included in 15019d6b8fSAnthony Liguori * all copies or substantial portions of the Software. 16019d6b8fSAnthony Liguori * 17019d6b8fSAnthony Liguori * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18019d6b8fSAnthony Liguori * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19019d6b8fSAnthony Liguori * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20019d6b8fSAnthony Liguori * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21019d6b8fSAnthony Liguori * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22019d6b8fSAnthony Liguori * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 23019d6b8fSAnthony Liguori * THE SOFTWARE. 24019d6b8fSAnthony Liguori */ 25019d6b8fSAnthony Liguori 26019d6b8fSAnthony Liguori #include "qemu-common.h" 27737e150eSPaolo Bonzini #include "block/block_int.h" 281de7afc9SPaolo Bonzini #include "qemu/module.h" 29caf71f86SPaolo Bonzini #include "migration/migration.h" 302923d34fSStefan Weil #include <zlib.h> 31019d6b8fSAnthony Liguori 32019d6b8fSAnthony Liguori #define VMDK3_MAGIC (('C' << 24) | ('O' << 16) | ('W' << 8) | 'D') 33019d6b8fSAnthony Liguori #define VMDK4_MAGIC (('K' << 24) | ('D' << 16) | ('M' << 8) | 'V') 34432bb170SFam Zheng #define VMDK4_COMPRESSION_DEFLATE 1 3595b0aa42SFam Zheng #define VMDK4_FLAG_NL_DETECT (1 << 0) 36bb45ded9SFam Zheng #define VMDK4_FLAG_RGD (1 << 1) 3714ead646SFam Zheng /* Zeroed-grain enable bit */ 3814ead646SFam Zheng #define VMDK4_FLAG_ZERO_GRAIN (1 << 2) 39432bb170SFam Zheng #define VMDK4_FLAG_COMPRESS (1 << 16) 40432bb170SFam Zheng #define VMDK4_FLAG_MARKER (1 << 17) 4165bd155cSKevin Wolf #define VMDK4_GD_AT_END 0xffffffffffffffffULL 42019d6b8fSAnthony Liguori 4314ead646SFam Zheng #define VMDK_GTE_ZEROED 0x1 4465f74725SFam Zheng 4565f74725SFam Zheng /* VMDK internal error codes */ 4665f74725SFam Zheng #define VMDK_OK 0 4765f74725SFam Zheng #define VMDK_ERROR (-1) 4865f74725SFam Zheng /* Cluster not allocated */ 4965f74725SFam Zheng #define VMDK_UNALLOC (-2) 5065f74725SFam Zheng #define VMDK_ZEROED (-3) 5165f74725SFam Zheng 5269e0b6dfSFam Zheng #define BLOCK_OPT_ZEROED_GRAIN "zeroed_grain" 5369e0b6dfSFam Zheng 54019d6b8fSAnthony Liguori typedef struct { 55019d6b8fSAnthony Liguori uint32_t version; 56019d6b8fSAnthony Liguori uint32_t flags; 57019d6b8fSAnthony Liguori uint32_t disk_sectors; 58019d6b8fSAnthony Liguori uint32_t granularity; 59019d6b8fSAnthony Liguori uint32_t l1dir_offset; 60019d6b8fSAnthony Liguori uint32_t l1dir_size; 61019d6b8fSAnthony Liguori uint32_t file_sectors; 62019d6b8fSAnthony Liguori uint32_t cylinders; 63019d6b8fSAnthony Liguori uint32_t heads; 64019d6b8fSAnthony Liguori uint32_t sectors_per_track; 655d8caa54SFam Zheng } QEMU_PACKED VMDK3Header; 66019d6b8fSAnthony Liguori 67019d6b8fSAnthony Liguori typedef struct { 68019d6b8fSAnthony Liguori uint32_t version; 69019d6b8fSAnthony Liguori uint32_t flags; 70e98768d4SFam Zheng uint64_t capacity; 71e98768d4SFam Zheng uint64_t granularity; 72e98768d4SFam Zheng uint64_t desc_offset; 73e98768d4SFam Zheng uint64_t desc_size; 74ca8804ceSFam Zheng /* Number of GrainTableEntries per GrainTable */ 75ca8804ceSFam Zheng uint32_t num_gtes_per_gt; 76e98768d4SFam Zheng uint64_t rgd_offset; 77e98768d4SFam Zheng uint64_t gd_offset; 78e98768d4SFam Zheng uint64_t grain_offset; 79019d6b8fSAnthony Liguori char filler[1]; 80019d6b8fSAnthony Liguori char check_bytes[4]; 81432bb170SFam Zheng uint16_t compressAlgorithm; 82541dc0d4SStefan Weil } QEMU_PACKED VMDK4Header; 83019d6b8fSAnthony Liguori 84019d6b8fSAnthony Liguori #define L2_CACHE_SIZE 16 85019d6b8fSAnthony Liguori 86b3976d3cSFam Zheng typedef struct VmdkExtent { 87b3976d3cSFam Zheng BlockDriverState *file; 88b3976d3cSFam Zheng bool flat; 89432bb170SFam Zheng bool compressed; 90432bb170SFam Zheng bool has_marker; 9114ead646SFam Zheng bool has_zero_grain; 9214ead646SFam Zheng int version; 93b3976d3cSFam Zheng int64_t sectors; 94b3976d3cSFam Zheng int64_t end_sector; 957fa60fa3SFam Zheng int64_t flat_start_offset; 96019d6b8fSAnthony Liguori int64_t l1_table_offset; 97019d6b8fSAnthony Liguori int64_t l1_backup_table_offset; 98019d6b8fSAnthony Liguori uint32_t *l1_table; 99019d6b8fSAnthony Liguori uint32_t *l1_backup_table; 100019d6b8fSAnthony Liguori unsigned int l1_size; 101019d6b8fSAnthony Liguori uint32_t l1_entry_sectors; 102019d6b8fSAnthony Liguori 103019d6b8fSAnthony Liguori unsigned int l2_size; 104019d6b8fSAnthony Liguori uint32_t *l2_cache; 105019d6b8fSAnthony Liguori uint32_t l2_cache_offsets[L2_CACHE_SIZE]; 106019d6b8fSAnthony Liguori uint32_t l2_cache_counts[L2_CACHE_SIZE]; 107019d6b8fSAnthony Liguori 108301c7d38SFam Zheng int64_t cluster_sectors; 109c6ac36e1SFam Zheng int64_t next_cluster_sector; 110f4c129a3SFam Zheng char *type; 111b3976d3cSFam Zheng } VmdkExtent; 112b3976d3cSFam Zheng 113b3976d3cSFam Zheng typedef struct BDRVVmdkState { 114848c66e8SPaolo Bonzini CoMutex lock; 115e98768d4SFam Zheng uint64_t desc_offset; 11669b4d86dSFam Zheng bool cid_updated; 117c338b6adSFam Zheng bool cid_checked; 118f4c129a3SFam Zheng uint32_t cid; 119019d6b8fSAnthony Liguori uint32_t parent_cid; 120b3976d3cSFam Zheng int num_extents; 121b3976d3cSFam Zheng /* Extent array with num_extents entries, ascend ordered by address */ 122b3976d3cSFam Zheng VmdkExtent *extents; 1232bc3166cSKevin Wolf Error *migration_blocker; 124f4c129a3SFam Zheng char *create_type; 125019d6b8fSAnthony Liguori } BDRVVmdkState; 126019d6b8fSAnthony Liguori 127019d6b8fSAnthony Liguori typedef struct VmdkMetaData { 128019d6b8fSAnthony Liguori unsigned int l1_index; 129019d6b8fSAnthony Liguori unsigned int l2_index; 130019d6b8fSAnthony Liguori unsigned int l2_offset; 131019d6b8fSAnthony Liguori int valid; 132cdeaf1f1SFam Zheng uint32_t *l2_cache_entry; 133019d6b8fSAnthony Liguori } VmdkMetaData; 134019d6b8fSAnthony Liguori 135432bb170SFam Zheng typedef struct VmdkGrainMarker { 136432bb170SFam Zheng uint64_t lba; 137432bb170SFam Zheng uint32_t size; 138432bb170SFam Zheng uint8_t data[0]; 1395d8caa54SFam Zheng } QEMU_PACKED VmdkGrainMarker; 140432bb170SFam Zheng 14165bd155cSKevin Wolf enum { 14265bd155cSKevin Wolf MARKER_END_OF_STREAM = 0, 14365bd155cSKevin Wolf MARKER_GRAIN_TABLE = 1, 14465bd155cSKevin Wolf MARKER_GRAIN_DIRECTORY = 2, 14565bd155cSKevin Wolf MARKER_FOOTER = 3, 14665bd155cSKevin Wolf }; 14765bd155cSKevin Wolf 148019d6b8fSAnthony Liguori static int vmdk_probe(const uint8_t *buf, int buf_size, const char *filename) 149019d6b8fSAnthony Liguori { 150019d6b8fSAnthony Liguori uint32_t magic; 151019d6b8fSAnthony Liguori 152ae261c86SFam Zheng if (buf_size < 4) { 153019d6b8fSAnthony Liguori return 0; 154ae261c86SFam Zheng } 155019d6b8fSAnthony Liguori magic = be32_to_cpu(*(uint32_t *)buf); 156019d6b8fSAnthony Liguori if (magic == VMDK3_MAGIC || 15701fc99d6SFam Zheng magic == VMDK4_MAGIC) { 158019d6b8fSAnthony Liguori return 100; 15901fc99d6SFam Zheng } else { 16001fc99d6SFam Zheng const char *p = (const char *)buf; 16101fc99d6SFam Zheng const char *end = p + buf_size; 16201fc99d6SFam Zheng while (p < end) { 16301fc99d6SFam Zheng if (*p == '#') { 16401fc99d6SFam Zheng /* skip comment line */ 16501fc99d6SFam Zheng while (p < end && *p != '\n') { 16601fc99d6SFam Zheng p++; 16701fc99d6SFam Zheng } 16801fc99d6SFam Zheng p++; 16901fc99d6SFam Zheng continue; 17001fc99d6SFam Zheng } 17101fc99d6SFam Zheng if (*p == ' ') { 17201fc99d6SFam Zheng while (p < end && *p == ' ') { 17301fc99d6SFam Zheng p++; 17401fc99d6SFam Zheng } 17501fc99d6SFam Zheng /* skip '\r' if windows line endings used. */ 17601fc99d6SFam Zheng if (p < end && *p == '\r') { 17701fc99d6SFam Zheng p++; 17801fc99d6SFam Zheng } 17901fc99d6SFam Zheng /* only accept blank lines before 'version=' line */ 18001fc99d6SFam Zheng if (p == end || *p != '\n') { 181019d6b8fSAnthony Liguori return 0; 182019d6b8fSAnthony Liguori } 18301fc99d6SFam Zheng p++; 18401fc99d6SFam Zheng continue; 18501fc99d6SFam Zheng } 18601fc99d6SFam Zheng if (end - p >= strlen("version=X\n")) { 18701fc99d6SFam Zheng if (strncmp("version=1\n", p, strlen("version=1\n")) == 0 || 18801fc99d6SFam Zheng strncmp("version=2\n", p, strlen("version=2\n")) == 0) { 18901fc99d6SFam Zheng return 100; 19001fc99d6SFam Zheng } 19101fc99d6SFam Zheng } 19201fc99d6SFam Zheng if (end - p >= strlen("version=X\r\n")) { 19301fc99d6SFam Zheng if (strncmp("version=1\r\n", p, strlen("version=1\r\n")) == 0 || 19401fc99d6SFam Zheng strncmp("version=2\r\n", p, strlen("version=2\r\n")) == 0) { 19501fc99d6SFam Zheng return 100; 19601fc99d6SFam Zheng } 19701fc99d6SFam Zheng } 19801fc99d6SFam Zheng return 0; 19901fc99d6SFam Zheng } 20001fc99d6SFam Zheng return 0; 20101fc99d6SFam Zheng } 20201fc99d6SFam Zheng } 203019d6b8fSAnthony Liguori 204019d6b8fSAnthony Liguori #define SECTOR_SIZE 512 205f66fd6c3SFam Zheng #define DESC_SIZE (20 * SECTOR_SIZE) /* 20 sectors of 512 bytes each */ 206f66fd6c3SFam Zheng #define BUF_SIZE 4096 207f66fd6c3SFam Zheng #define HEADER_SIZE 512 /* first sector of 512 bytes */ 208019d6b8fSAnthony Liguori 209b3976d3cSFam Zheng static void vmdk_free_extents(BlockDriverState *bs) 210b3976d3cSFam Zheng { 211b3976d3cSFam Zheng int i; 212b3976d3cSFam Zheng BDRVVmdkState *s = bs->opaque; 213b3c0bfb6SFam Zheng VmdkExtent *e; 214b3976d3cSFam Zheng 215b3976d3cSFam Zheng for (i = 0; i < s->num_extents; i++) { 216b3c0bfb6SFam Zheng e = &s->extents[i]; 217b3c0bfb6SFam Zheng g_free(e->l1_table); 218b3c0bfb6SFam Zheng g_free(e->l2_cache); 219b3c0bfb6SFam Zheng g_free(e->l1_backup_table); 220f4c129a3SFam Zheng g_free(e->type); 221b3c0bfb6SFam Zheng if (e->file != bs->file) { 2224f6fd349SFam Zheng bdrv_unref(e->file); 223b3c0bfb6SFam Zheng } 224b3976d3cSFam Zheng } 2257267c094SAnthony Liguori g_free(s->extents); 226b3976d3cSFam Zheng } 227b3976d3cSFam Zheng 22886c6b429SFam Zheng static void vmdk_free_last_extent(BlockDriverState *bs) 22986c6b429SFam Zheng { 23086c6b429SFam Zheng BDRVVmdkState *s = bs->opaque; 23186c6b429SFam Zheng 23286c6b429SFam Zheng if (s->num_extents == 0) { 23386c6b429SFam Zheng return; 23486c6b429SFam Zheng } 23586c6b429SFam Zheng s->num_extents--; 23686c6b429SFam Zheng s->extents = g_realloc(s->extents, s->num_extents * sizeof(VmdkExtent)); 23786c6b429SFam Zheng } 23886c6b429SFam Zheng 239019d6b8fSAnthony Liguori static uint32_t vmdk_read_cid(BlockDriverState *bs, int parent) 240019d6b8fSAnthony Liguori { 241019d6b8fSAnthony Liguori char desc[DESC_SIZE]; 2428379e46dSPavel Borzenkov uint32_t cid = 0xffffffff; 243019d6b8fSAnthony Liguori const char *p_name, *cid_str; 244019d6b8fSAnthony Liguori size_t cid_str_size; 245e1da9b24SFam Zheng BDRVVmdkState *s = bs->opaque; 24699f1835dSKevin Wolf int ret; 247019d6b8fSAnthony Liguori 24899f1835dSKevin Wolf ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); 24999f1835dSKevin Wolf if (ret < 0) { 250019d6b8fSAnthony Liguori return 0; 251e1da9b24SFam Zheng } 252019d6b8fSAnthony Liguori 253019d6b8fSAnthony Liguori if (parent) { 254019d6b8fSAnthony Liguori cid_str = "parentCID"; 255019d6b8fSAnthony Liguori cid_str_size = sizeof("parentCID"); 256019d6b8fSAnthony Liguori } else { 257019d6b8fSAnthony Liguori cid_str = "CID"; 258019d6b8fSAnthony Liguori cid_str_size = sizeof("CID"); 259019d6b8fSAnthony Liguori } 260019d6b8fSAnthony Liguori 26193897b9fSKevin Wolf desc[DESC_SIZE - 1] = '\0'; 262ae261c86SFam Zheng p_name = strstr(desc, cid_str); 263ae261c86SFam Zheng if (p_name != NULL) { 264019d6b8fSAnthony Liguori p_name += cid_str_size; 2659b17031aSFam Zheng sscanf(p_name, "%" SCNx32, &cid); 266019d6b8fSAnthony Liguori } 267019d6b8fSAnthony Liguori 268019d6b8fSAnthony Liguori return cid; 269019d6b8fSAnthony Liguori } 270019d6b8fSAnthony Liguori 271019d6b8fSAnthony Liguori static int vmdk_write_cid(BlockDriverState *bs, uint32_t cid) 272019d6b8fSAnthony Liguori { 273019d6b8fSAnthony Liguori char desc[DESC_SIZE], tmp_desc[DESC_SIZE]; 274019d6b8fSAnthony Liguori char *p_name, *tmp_str; 275e1da9b24SFam Zheng BDRVVmdkState *s = bs->opaque; 27699f1835dSKevin Wolf int ret; 277019d6b8fSAnthony Liguori 27899f1835dSKevin Wolf ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); 27999f1835dSKevin Wolf if (ret < 0) { 28099f1835dSKevin Wolf return ret; 281e1da9b24SFam Zheng } 282019d6b8fSAnthony Liguori 28393897b9fSKevin Wolf desc[DESC_SIZE - 1] = '\0'; 284019d6b8fSAnthony Liguori tmp_str = strstr(desc, "parentCID"); 28593897b9fSKevin Wolf if (tmp_str == NULL) { 28693897b9fSKevin Wolf return -EINVAL; 28793897b9fSKevin Wolf } 28893897b9fSKevin Wolf 289019d6b8fSAnthony Liguori pstrcpy(tmp_desc, sizeof(tmp_desc), tmp_str); 290ae261c86SFam Zheng p_name = strstr(desc, "CID"); 291ae261c86SFam Zheng if (p_name != NULL) { 292019d6b8fSAnthony Liguori p_name += sizeof("CID"); 2939b17031aSFam Zheng snprintf(p_name, sizeof(desc) - (p_name - desc), "%" PRIx32 "\n", cid); 294019d6b8fSAnthony Liguori pstrcat(desc, sizeof(desc), tmp_desc); 295019d6b8fSAnthony Liguori } 296019d6b8fSAnthony Liguori 29799f1835dSKevin Wolf ret = bdrv_pwrite_sync(bs->file, s->desc_offset, desc, DESC_SIZE); 29899f1835dSKevin Wolf if (ret < 0) { 29999f1835dSKevin Wolf return ret; 300e1da9b24SFam Zheng } 30199f1835dSKevin Wolf 302019d6b8fSAnthony Liguori return 0; 303019d6b8fSAnthony Liguori } 304019d6b8fSAnthony Liguori 305019d6b8fSAnthony Liguori static int vmdk_is_cid_valid(BlockDriverState *bs) 306019d6b8fSAnthony Liguori { 307019d6b8fSAnthony Liguori BDRVVmdkState *s = bs->opaque; 308b171271aSKevin Wolf BlockDriverState *p_bs = bs->backing_hd; 309019d6b8fSAnthony Liguori uint32_t cur_pcid; 310019d6b8fSAnthony Liguori 311c338b6adSFam Zheng if (!s->cid_checked && p_bs) { 312019d6b8fSAnthony Liguori cur_pcid = vmdk_read_cid(p_bs, 0); 313ae261c86SFam Zheng if (s->parent_cid != cur_pcid) { 314ae261c86SFam Zheng /* CID not valid */ 315019d6b8fSAnthony Liguori return 0; 316019d6b8fSAnthony Liguori } 317ae261c86SFam Zheng } 318c338b6adSFam Zheng s->cid_checked = true; 319ae261c86SFam Zheng /* CID valid */ 320019d6b8fSAnthony Liguori return 1; 321019d6b8fSAnthony Liguori } 322019d6b8fSAnthony Liguori 3233897575fSJeff Cody /* Queue extents, if any, for reopen() */ 3243897575fSJeff Cody static int vmdk_reopen_prepare(BDRVReopenState *state, 3253897575fSJeff Cody BlockReopenQueue *queue, Error **errp) 3263897575fSJeff Cody { 3273897575fSJeff Cody BDRVVmdkState *s; 3283897575fSJeff Cody int ret = -1; 3293897575fSJeff Cody int i; 3303897575fSJeff Cody VmdkExtent *e; 3313897575fSJeff Cody 3323897575fSJeff Cody assert(state != NULL); 3333897575fSJeff Cody assert(state->bs != NULL); 3343897575fSJeff Cody 3353897575fSJeff Cody if (queue == NULL) { 3364823970bSFam Zheng error_setg(errp, "No reopen queue for VMDK extents"); 3373897575fSJeff Cody goto exit; 3383897575fSJeff Cody } 3393897575fSJeff Cody 3403897575fSJeff Cody s = state->bs->opaque; 3413897575fSJeff Cody 3423897575fSJeff Cody assert(s != NULL); 3433897575fSJeff Cody 3443897575fSJeff Cody for (i = 0; i < s->num_extents; i++) { 3453897575fSJeff Cody e = &s->extents[i]; 3463897575fSJeff Cody if (e->file != state->bs->file) { 3473897575fSJeff Cody bdrv_reopen_queue(queue, e->file, state->flags); 3483897575fSJeff Cody } 3493897575fSJeff Cody } 3503897575fSJeff Cody ret = 0; 3513897575fSJeff Cody 3523897575fSJeff Cody exit: 3533897575fSJeff Cody return ret; 3543897575fSJeff Cody } 3553897575fSJeff Cody 3569949f97eSKevin Wolf static int vmdk_parent_open(BlockDriverState *bs) 357019d6b8fSAnthony Liguori { 358019d6b8fSAnthony Liguori char *p_name; 3597fa60fa3SFam Zheng char desc[DESC_SIZE + 1]; 360e1da9b24SFam Zheng BDRVVmdkState *s = bs->opaque; 361588b65a3SPaolo Bonzini int ret; 362019d6b8fSAnthony Liguori 3637fa60fa3SFam Zheng desc[DESC_SIZE] = '\0'; 364588b65a3SPaolo Bonzini ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); 365588b65a3SPaolo Bonzini if (ret < 0) { 366588b65a3SPaolo Bonzini return ret; 367e1da9b24SFam Zheng } 368019d6b8fSAnthony Liguori 369ae261c86SFam Zheng p_name = strstr(desc, "parentFileNameHint"); 370ae261c86SFam Zheng if (p_name != NULL) { 371019d6b8fSAnthony Liguori char *end_name; 372019d6b8fSAnthony Liguori 373019d6b8fSAnthony Liguori p_name += sizeof("parentFileNameHint") + 1; 374ae261c86SFam Zheng end_name = strchr(p_name, '\"'); 375ae261c86SFam Zheng if (end_name == NULL) { 376588b65a3SPaolo Bonzini return -EINVAL; 377ae261c86SFam Zheng } 378ae261c86SFam Zheng if ((end_name - p_name) > sizeof(bs->backing_file) - 1) { 379588b65a3SPaolo Bonzini return -EINVAL; 380ae261c86SFam Zheng } 381019d6b8fSAnthony Liguori 382b171271aSKevin Wolf pstrcpy(bs->backing_file, end_name - p_name + 1, p_name); 383019d6b8fSAnthony Liguori } 384019d6b8fSAnthony Liguori 385019d6b8fSAnthony Liguori return 0; 386019d6b8fSAnthony Liguori } 387019d6b8fSAnthony Liguori 388b3976d3cSFam Zheng /* Create and append extent to the extent array. Return the added VmdkExtent 389b3976d3cSFam Zheng * address. return NULL if allocation failed. */ 3908aa1331cSFam Zheng static int vmdk_add_extent(BlockDriverState *bs, 391b3976d3cSFam Zheng BlockDriverState *file, bool flat, int64_t sectors, 392b3976d3cSFam Zheng int64_t l1_offset, int64_t l1_backup_offset, 393b3976d3cSFam Zheng uint32_t l1_size, 3948aa1331cSFam Zheng int l2_size, uint64_t cluster_sectors, 3954823970bSFam Zheng VmdkExtent **new_extent, 3964823970bSFam Zheng Error **errp) 397b3976d3cSFam Zheng { 398b3976d3cSFam Zheng VmdkExtent *extent; 399b3976d3cSFam Zheng BDRVVmdkState *s = bs->opaque; 400c6ac36e1SFam Zheng int64_t length; 401b3976d3cSFam Zheng 4028aa1331cSFam Zheng if (cluster_sectors > 0x200000) { 4038aa1331cSFam Zheng /* 0x200000 * 512Bytes = 1GB for one cluster is unrealistic */ 4044823970bSFam Zheng error_setg(errp, "Invalid granularity, image may be corrupt"); 4054823970bSFam Zheng return -EFBIG; 4068aa1331cSFam Zheng } 407b0651b8cSFam Zheng if (l1_size > 512 * 1024 * 1024) { 408b0651b8cSFam Zheng /* Although with big capacity and small l1_entry_sectors, we can get a 409b0651b8cSFam Zheng * big l1_size, we don't want unbounded value to allocate the table. 410b0651b8cSFam Zheng * Limit it to 512M, which is 16PB for default cluster and L2 table 411b0651b8cSFam Zheng * size */ 4124823970bSFam Zheng error_setg(errp, "L1 size too big"); 413b0651b8cSFam Zheng return -EFBIG; 414b0651b8cSFam Zheng } 4158aa1331cSFam Zheng 416c6ac36e1SFam Zheng length = bdrv_getlength(file); 417c6ac36e1SFam Zheng if (length < 0) { 418c6ac36e1SFam Zheng return length; 419c6ac36e1SFam Zheng } 420c6ac36e1SFam Zheng 4217267c094SAnthony Liguori s->extents = g_realloc(s->extents, 422b3976d3cSFam Zheng (s->num_extents + 1) * sizeof(VmdkExtent)); 423b3976d3cSFam Zheng extent = &s->extents[s->num_extents]; 424b3976d3cSFam Zheng s->num_extents++; 425b3976d3cSFam Zheng 426b3976d3cSFam Zheng memset(extent, 0, sizeof(VmdkExtent)); 427b3976d3cSFam Zheng extent->file = file; 428b3976d3cSFam Zheng extent->flat = flat; 429b3976d3cSFam Zheng extent->sectors = sectors; 430b3976d3cSFam Zheng extent->l1_table_offset = l1_offset; 431b3976d3cSFam Zheng extent->l1_backup_table_offset = l1_backup_offset; 432b3976d3cSFam Zheng extent->l1_size = l1_size; 433b3976d3cSFam Zheng extent->l1_entry_sectors = l2_size * cluster_sectors; 434b3976d3cSFam Zheng extent->l2_size = l2_size; 435301c7d38SFam Zheng extent->cluster_sectors = flat ? sectors : cluster_sectors; 436c6ac36e1SFam Zheng extent->next_cluster_sector = 437c6ac36e1SFam Zheng ROUND_UP(DIV_ROUND_UP(length, BDRV_SECTOR_SIZE), cluster_sectors); 438b3976d3cSFam Zheng 439b3976d3cSFam Zheng if (s->num_extents > 1) { 440b3976d3cSFam Zheng extent->end_sector = (*(extent - 1)).end_sector + extent->sectors; 441b3976d3cSFam Zheng } else { 442b3976d3cSFam Zheng extent->end_sector = extent->sectors; 443b3976d3cSFam Zheng } 444b3976d3cSFam Zheng bs->total_sectors = extent->end_sector; 4458aa1331cSFam Zheng if (new_extent) { 4468aa1331cSFam Zheng *new_extent = extent; 4478aa1331cSFam Zheng } 4488aa1331cSFam Zheng return 0; 449b3976d3cSFam Zheng } 450b3976d3cSFam Zheng 4514823970bSFam Zheng static int vmdk_init_tables(BlockDriverState *bs, VmdkExtent *extent, 4524823970bSFam Zheng Error **errp) 453019d6b8fSAnthony Liguori { 454b4b3ab14SFam Zheng int ret; 455b4b3ab14SFam Zheng int l1_size, i; 456b4b3ab14SFam Zheng 457b4b3ab14SFam Zheng /* read the L1 table */ 458b4b3ab14SFam Zheng l1_size = extent->l1_size * sizeof(uint32_t); 459*d6e59931SKevin Wolf extent->l1_table = g_try_malloc(l1_size); 460*d6e59931SKevin Wolf if (l1_size && extent->l1_table == NULL) { 461*d6e59931SKevin Wolf return -ENOMEM; 462*d6e59931SKevin Wolf } 463*d6e59931SKevin Wolf 464b4b3ab14SFam Zheng ret = bdrv_pread(extent->file, 465b4b3ab14SFam Zheng extent->l1_table_offset, 466b4b3ab14SFam Zheng extent->l1_table, 467b4b3ab14SFam Zheng l1_size); 468b4b3ab14SFam Zheng if (ret < 0) { 4694823970bSFam Zheng error_setg_errno(errp, -ret, 4704823970bSFam Zheng "Could not read l1 table from extent '%s'", 4714823970bSFam Zheng extent->file->filename); 472b4b3ab14SFam Zheng goto fail_l1; 473b4b3ab14SFam Zheng } 474b4b3ab14SFam Zheng for (i = 0; i < extent->l1_size; i++) { 475b4b3ab14SFam Zheng le32_to_cpus(&extent->l1_table[i]); 476b4b3ab14SFam Zheng } 477b4b3ab14SFam Zheng 478b4b3ab14SFam Zheng if (extent->l1_backup_table_offset) { 479*d6e59931SKevin Wolf extent->l1_backup_table = g_try_malloc(l1_size); 480*d6e59931SKevin Wolf if (l1_size && extent->l1_backup_table == NULL) { 481*d6e59931SKevin Wolf ret = -ENOMEM; 482*d6e59931SKevin Wolf goto fail_l1; 483*d6e59931SKevin Wolf } 484b4b3ab14SFam Zheng ret = bdrv_pread(extent->file, 485b4b3ab14SFam Zheng extent->l1_backup_table_offset, 486b4b3ab14SFam Zheng extent->l1_backup_table, 487b4b3ab14SFam Zheng l1_size); 488b4b3ab14SFam Zheng if (ret < 0) { 4894823970bSFam Zheng error_setg_errno(errp, -ret, 4904823970bSFam Zheng "Could not read l1 backup table from extent '%s'", 4914823970bSFam Zheng extent->file->filename); 492b4b3ab14SFam Zheng goto fail_l1b; 493b4b3ab14SFam Zheng } 494b4b3ab14SFam Zheng for (i = 0; i < extent->l1_size; i++) { 495b4b3ab14SFam Zheng le32_to_cpus(&extent->l1_backup_table[i]); 496b4b3ab14SFam Zheng } 497b4b3ab14SFam Zheng } 498b4b3ab14SFam Zheng 499b4b3ab14SFam Zheng extent->l2_cache = 5007267c094SAnthony Liguori g_malloc(extent->l2_size * L2_CACHE_SIZE * sizeof(uint32_t)); 501b4b3ab14SFam Zheng return 0; 502b4b3ab14SFam Zheng fail_l1b: 5037267c094SAnthony Liguori g_free(extent->l1_backup_table); 504b4b3ab14SFam Zheng fail_l1: 5057267c094SAnthony Liguori g_free(extent->l1_table); 506b4b3ab14SFam Zheng return ret; 507b4b3ab14SFam Zheng } 508b4b3ab14SFam Zheng 509daac8fdcSFam Zheng static int vmdk_open_vmfs_sparse(BlockDriverState *bs, 51086c6b429SFam Zheng BlockDriverState *file, 5114823970bSFam Zheng int flags, Error **errp) 512b4b3ab14SFam Zheng { 513b4b3ab14SFam Zheng int ret; 514019d6b8fSAnthony Liguori uint32_t magic; 515019d6b8fSAnthony Liguori VMDK3Header header; 516b4b3ab14SFam Zheng VmdkExtent *extent; 517b4b3ab14SFam Zheng 51886c6b429SFam Zheng ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header)); 519b4b3ab14SFam Zheng if (ret < 0) { 5204823970bSFam Zheng error_setg_errno(errp, -ret, 5214823970bSFam Zheng "Could not read header from file '%s'", 5224823970bSFam Zheng file->filename); 52386c6b429SFam Zheng return ret; 524b3976d3cSFam Zheng } 525f6b61e54SFam Zheng ret = vmdk_add_extent(bs, file, false, 526b3976d3cSFam Zheng le32_to_cpu(header.disk_sectors), 527b4b3ab14SFam Zheng le32_to_cpu(header.l1dir_offset) << 9, 528f6b61e54SFam Zheng 0, 529f6b61e54SFam Zheng le32_to_cpu(header.l1dir_size), 530f6b61e54SFam Zheng 4096, 5318aa1331cSFam Zheng le32_to_cpu(header.granularity), 5324823970bSFam Zheng &extent, 5334823970bSFam Zheng errp); 5348aa1331cSFam Zheng if (ret < 0) { 5358aa1331cSFam Zheng return ret; 5368aa1331cSFam Zheng } 5374823970bSFam Zheng ret = vmdk_init_tables(bs, extent, errp); 538b4b3ab14SFam Zheng if (ret) { 53986c6b429SFam Zheng /* free extent allocated by vmdk_add_extent */ 54086c6b429SFam Zheng vmdk_free_last_extent(bs); 541b4b3ab14SFam Zheng } 542b4b3ab14SFam Zheng return ret; 543b4b3ab14SFam Zheng } 544b4b3ab14SFam Zheng 545d1833ef5SPaolo Bonzini static int vmdk_open_desc_file(BlockDriverState *bs, int flags, char *buf, 546d1833ef5SPaolo Bonzini Error **errp); 547f16f509dSFam Zheng 548a8842e6dSPaolo Bonzini static char *vmdk_read_desc(BlockDriverState *file, uint64_t desc_offset, 549a8842e6dSPaolo Bonzini Error **errp) 550a8842e6dSPaolo Bonzini { 551a8842e6dSPaolo Bonzini int64_t size; 552a8842e6dSPaolo Bonzini char *buf; 553a8842e6dSPaolo Bonzini int ret; 554a8842e6dSPaolo Bonzini 555a8842e6dSPaolo Bonzini size = bdrv_getlength(file); 556a8842e6dSPaolo Bonzini if (size < 0) { 557a8842e6dSPaolo Bonzini error_setg_errno(errp, -size, "Could not access file"); 558a8842e6dSPaolo Bonzini return NULL; 559a8842e6dSPaolo Bonzini } 560a8842e6dSPaolo Bonzini 561a8842e6dSPaolo Bonzini size = MIN(size, 1 << 20); /* avoid unbounded allocation */ 562a8842e6dSPaolo Bonzini buf = g_malloc0(size + 1); 563a8842e6dSPaolo Bonzini 564a8842e6dSPaolo Bonzini ret = bdrv_pread(file, desc_offset, buf, size); 565a8842e6dSPaolo Bonzini if (ret < 0) { 566a8842e6dSPaolo Bonzini error_setg_errno(errp, -ret, "Could not read from file"); 567a8842e6dSPaolo Bonzini g_free(buf); 568a8842e6dSPaolo Bonzini return NULL; 569a8842e6dSPaolo Bonzini } 570a8842e6dSPaolo Bonzini 571a8842e6dSPaolo Bonzini return buf; 572a8842e6dSPaolo Bonzini } 573a8842e6dSPaolo Bonzini 57486c6b429SFam Zheng static int vmdk_open_vmdk4(BlockDriverState *bs, 57586c6b429SFam Zheng BlockDriverState *file, 5764823970bSFam Zheng int flags, Error **errp) 577b4b3ab14SFam Zheng { 578b4b3ab14SFam Zheng int ret; 579b4b3ab14SFam Zheng uint32_t magic; 580b4b3ab14SFam Zheng uint32_t l1_size, l1_entry_sectors; 581019d6b8fSAnthony Liguori VMDK4Header header; 582b4b3ab14SFam Zheng VmdkExtent *extent; 583f4c129a3SFam Zheng BDRVVmdkState *s = bs->opaque; 584bb45ded9SFam Zheng int64_t l1_backup_offset = 0; 585b4b3ab14SFam Zheng 58686c6b429SFam Zheng ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header)); 587b4b3ab14SFam Zheng if (ret < 0) { 5884823970bSFam Zheng error_setg_errno(errp, -ret, 5894823970bSFam Zheng "Could not read header from file '%s'", 5904823970bSFam Zheng file->filename); 59189ac8480SPaolo Bonzini return -EINVAL; 592b3976d3cSFam Zheng } 5935a394b9eSStefan Hajnoczi if (header.capacity == 0) { 594e98768d4SFam Zheng uint64_t desc_offset = le64_to_cpu(header.desc_offset); 5955a394b9eSStefan Hajnoczi if (desc_offset) { 596d1833ef5SPaolo Bonzini char *buf = vmdk_read_desc(file, desc_offset << 9, errp); 597d1833ef5SPaolo Bonzini if (!buf) { 598d1833ef5SPaolo Bonzini return -EINVAL; 599d1833ef5SPaolo Bonzini } 600d1833ef5SPaolo Bonzini ret = vmdk_open_desc_file(bs, flags, buf, errp); 601d1833ef5SPaolo Bonzini g_free(buf); 602d1833ef5SPaolo Bonzini return ret; 6035a394b9eSStefan Hajnoczi } 604f16f509dSFam Zheng } 60565bd155cSKevin Wolf 606f4c129a3SFam Zheng if (!s->create_type) { 607f4c129a3SFam Zheng s->create_type = g_strdup("monolithicSparse"); 608f4c129a3SFam Zheng } 609f4c129a3SFam Zheng 61065bd155cSKevin Wolf if (le64_to_cpu(header.gd_offset) == VMDK4_GD_AT_END) { 61165bd155cSKevin Wolf /* 61265bd155cSKevin Wolf * The footer takes precedence over the header, so read it in. The 61365bd155cSKevin Wolf * footer starts at offset -1024 from the end: One sector for the 61465bd155cSKevin Wolf * footer, and another one for the end-of-stream marker. 61565bd155cSKevin Wolf */ 61665bd155cSKevin Wolf struct { 61765bd155cSKevin Wolf struct { 61865bd155cSKevin Wolf uint64_t val; 61965bd155cSKevin Wolf uint32_t size; 62065bd155cSKevin Wolf uint32_t type; 62165bd155cSKevin Wolf uint8_t pad[512 - 16]; 62265bd155cSKevin Wolf } QEMU_PACKED footer_marker; 62365bd155cSKevin Wolf 62465bd155cSKevin Wolf uint32_t magic; 62565bd155cSKevin Wolf VMDK4Header header; 62665bd155cSKevin Wolf uint8_t pad[512 - 4 - sizeof(VMDK4Header)]; 62765bd155cSKevin Wolf 62865bd155cSKevin Wolf struct { 62965bd155cSKevin Wolf uint64_t val; 63065bd155cSKevin Wolf uint32_t size; 63165bd155cSKevin Wolf uint32_t type; 63265bd155cSKevin Wolf uint8_t pad[512 - 16]; 63365bd155cSKevin Wolf } QEMU_PACKED eos_marker; 63465bd155cSKevin Wolf } QEMU_PACKED footer; 63565bd155cSKevin Wolf 63665bd155cSKevin Wolf ret = bdrv_pread(file, 63765bd155cSKevin Wolf bs->file->total_sectors * 512 - 1536, 63865bd155cSKevin Wolf &footer, sizeof(footer)); 63965bd155cSKevin Wolf if (ret < 0) { 64065bd155cSKevin Wolf return ret; 64165bd155cSKevin Wolf } 64265bd155cSKevin Wolf 64365bd155cSKevin Wolf /* Some sanity checks for the footer */ 64465bd155cSKevin Wolf if (be32_to_cpu(footer.magic) != VMDK4_MAGIC || 64565bd155cSKevin Wolf le32_to_cpu(footer.footer_marker.size) != 0 || 64665bd155cSKevin Wolf le32_to_cpu(footer.footer_marker.type) != MARKER_FOOTER || 64765bd155cSKevin Wolf le64_to_cpu(footer.eos_marker.val) != 0 || 64865bd155cSKevin Wolf le32_to_cpu(footer.eos_marker.size) != 0 || 64965bd155cSKevin Wolf le32_to_cpu(footer.eos_marker.type) != MARKER_END_OF_STREAM) 65065bd155cSKevin Wolf { 65165bd155cSKevin Wolf return -EINVAL; 65265bd155cSKevin Wolf } 65365bd155cSKevin Wolf 65465bd155cSKevin Wolf header = footer.header; 65565bd155cSKevin Wolf } 65665bd155cSKevin Wolf 657509d39aaSFam Zheng if (le32_to_cpu(header.version) > 3) { 65896c51eb5SFam Zheng char buf[64]; 6594ab9dab5SFam Zheng snprintf(buf, sizeof(buf), "VMDK version %" PRId32, 66096c51eb5SFam Zheng le32_to_cpu(header.version)); 66189ac8480SPaolo Bonzini error_set(errp, QERR_UNKNOWN_BLOCK_FORMAT_FEATURE, 66296c51eb5SFam Zheng bs->device_name, "vmdk", buf); 66396c51eb5SFam Zheng return -ENOTSUP; 664509d39aaSFam Zheng } else if (le32_to_cpu(header.version) == 3 && (flags & BDRV_O_RDWR)) { 665509d39aaSFam Zheng /* VMware KB 2064959 explains that version 3 added support for 666509d39aaSFam Zheng * persistent changed block tracking (CBT), and backup software can 667509d39aaSFam Zheng * read it as version=1 if it doesn't care about the changed area 668509d39aaSFam Zheng * information. So we are safe to enable read only. */ 669509d39aaSFam Zheng error_setg(errp, "VMDK version 3 must be read only"); 670509d39aaSFam Zheng return -EINVAL; 67196c51eb5SFam Zheng } 67296c51eb5SFam Zheng 673ca8804ceSFam Zheng if (le32_to_cpu(header.num_gtes_per_gt) > 512) { 67489ac8480SPaolo Bonzini error_setg(errp, "L2 table size too big"); 675f8ce0403SFam Zheng return -EINVAL; 676f8ce0403SFam Zheng } 677f8ce0403SFam Zheng 678ca8804ceSFam Zheng l1_entry_sectors = le32_to_cpu(header.num_gtes_per_gt) 679b3976d3cSFam Zheng * le64_to_cpu(header.granularity); 68075d12341SStefan Weil if (l1_entry_sectors == 0) { 68186c6b429SFam Zheng return -EINVAL; 68286c6b429SFam Zheng } 683b3976d3cSFam Zheng l1_size = (le64_to_cpu(header.capacity) + l1_entry_sectors - 1) 684b3976d3cSFam Zheng / l1_entry_sectors; 685bb45ded9SFam Zheng if (le32_to_cpu(header.flags) & VMDK4_FLAG_RGD) { 686bb45ded9SFam Zheng l1_backup_offset = le64_to_cpu(header.rgd_offset) << 9; 687bb45ded9SFam Zheng } 68857322b78SMarkus Armbruster if (bdrv_nb_sectors(file) < le64_to_cpu(header.grain_offset)) { 6894ab9dab5SFam Zheng error_setg(errp, "File truncated, expecting at least %" PRId64 " bytes", 6904ab9dab5SFam Zheng (int64_t)(le64_to_cpu(header.grain_offset) 6914ab9dab5SFam Zheng * BDRV_SECTOR_SIZE)); 69234ceed81SFam Zheng return -EINVAL; 69334ceed81SFam Zheng } 69434ceed81SFam Zheng 6958aa1331cSFam Zheng ret = vmdk_add_extent(bs, file, false, 696b3976d3cSFam Zheng le64_to_cpu(header.capacity), 697b3976d3cSFam Zheng le64_to_cpu(header.gd_offset) << 9, 698bb45ded9SFam Zheng l1_backup_offset, 699b3976d3cSFam Zheng l1_size, 700ca8804ceSFam Zheng le32_to_cpu(header.num_gtes_per_gt), 7018aa1331cSFam Zheng le64_to_cpu(header.granularity), 7024823970bSFam Zheng &extent, 7034823970bSFam Zheng errp); 7048aa1331cSFam Zheng if (ret < 0) { 7058aa1331cSFam Zheng return ret; 7068aa1331cSFam Zheng } 707432bb170SFam Zheng extent->compressed = 708432bb170SFam Zheng le16_to_cpu(header.compressAlgorithm) == VMDK4_COMPRESSION_DEFLATE; 709d8a7b061SFam Zheng if (extent->compressed) { 710d8a7b061SFam Zheng g_free(s->create_type); 711d8a7b061SFam Zheng s->create_type = g_strdup("streamOptimized"); 712d8a7b061SFam Zheng } 713432bb170SFam Zheng extent->has_marker = le32_to_cpu(header.flags) & VMDK4_FLAG_MARKER; 71414ead646SFam Zheng extent->version = le32_to_cpu(header.version); 71514ead646SFam Zheng extent->has_zero_grain = le32_to_cpu(header.flags) & VMDK4_FLAG_ZERO_GRAIN; 7164823970bSFam Zheng ret = vmdk_init_tables(bs, extent, errp); 717b4b3ab14SFam Zheng if (ret) { 71886c6b429SFam Zheng /* free extent allocated by vmdk_add_extent */ 71986c6b429SFam Zheng vmdk_free_last_extent(bs); 720019d6b8fSAnthony Liguori } 721b4b3ab14SFam Zheng return ret; 722b4b3ab14SFam Zheng } 723b4b3ab14SFam Zheng 7247fa60fa3SFam Zheng /* find an option value out of descriptor file */ 7257fa60fa3SFam Zheng static int vmdk_parse_description(const char *desc, const char *opt_name, 7267fa60fa3SFam Zheng char *buf, int buf_size) 7277fa60fa3SFam Zheng { 7287fa60fa3SFam Zheng char *opt_pos, *opt_end; 7297fa60fa3SFam Zheng const char *end = desc + strlen(desc); 7307fa60fa3SFam Zheng 7317fa60fa3SFam Zheng opt_pos = strstr(desc, opt_name); 7327fa60fa3SFam Zheng if (!opt_pos) { 73365f74725SFam Zheng return VMDK_ERROR; 7347fa60fa3SFam Zheng } 7357fa60fa3SFam Zheng /* Skip "=\"" following opt_name */ 7367fa60fa3SFam Zheng opt_pos += strlen(opt_name) + 2; 7377fa60fa3SFam Zheng if (opt_pos >= end) { 73865f74725SFam Zheng return VMDK_ERROR; 7397fa60fa3SFam Zheng } 7407fa60fa3SFam Zheng opt_end = opt_pos; 7417fa60fa3SFam Zheng while (opt_end < end && *opt_end != '"') { 7427fa60fa3SFam Zheng opt_end++; 7437fa60fa3SFam Zheng } 7447fa60fa3SFam Zheng if (opt_end == end || buf_size < opt_end - opt_pos + 1) { 74565f74725SFam Zheng return VMDK_ERROR; 7467fa60fa3SFam Zheng } 7477fa60fa3SFam Zheng pstrcpy(buf, opt_end - opt_pos + 1, opt_pos); 74865f74725SFam Zheng return VMDK_OK; 7497fa60fa3SFam Zheng } 7507fa60fa3SFam Zheng 75186c6b429SFam Zheng /* Open an extent file and append to bs array */ 75286c6b429SFam Zheng static int vmdk_open_sparse(BlockDriverState *bs, 753d1833ef5SPaolo Bonzini BlockDriverState *file, int flags, 754d1833ef5SPaolo Bonzini char *buf, Error **errp) 75586c6b429SFam Zheng { 75686c6b429SFam Zheng uint32_t magic; 75786c6b429SFam Zheng 758d1833ef5SPaolo Bonzini magic = ldl_be_p(buf); 75986c6b429SFam Zheng switch (magic) { 76086c6b429SFam Zheng case VMDK3_MAGIC: 7614823970bSFam Zheng return vmdk_open_vmfs_sparse(bs, file, flags, errp); 76286c6b429SFam Zheng break; 76386c6b429SFam Zheng case VMDK4_MAGIC: 7644823970bSFam Zheng return vmdk_open_vmdk4(bs, file, flags, errp); 76586c6b429SFam Zheng break; 76686c6b429SFam Zheng default: 76776abe407SPaolo Bonzini error_setg(errp, "Image not in VMDK format"); 76876abe407SPaolo Bonzini return -EINVAL; 76986c6b429SFam Zheng break; 77086c6b429SFam Zheng } 77186c6b429SFam Zheng } 77286c6b429SFam Zheng 7737fa60fa3SFam Zheng static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, 7744823970bSFam Zheng const char *desc_file_path, Error **errp) 7757fa60fa3SFam Zheng { 7767fa60fa3SFam Zheng int ret; 7777fa60fa3SFam Zheng char access[11]; 7787fa60fa3SFam Zheng char type[11]; 7797fa60fa3SFam Zheng char fname[512]; 7807fa60fa3SFam Zheng const char *p = desc; 7817fa60fa3SFam Zheng int64_t sectors = 0; 7827fa60fa3SFam Zheng int64_t flat_offset; 78386c6b429SFam Zheng char extent_path[PATH_MAX]; 78486c6b429SFam Zheng BlockDriverState *extent_file; 785f4c129a3SFam Zheng BDRVVmdkState *s = bs->opaque; 786f4c129a3SFam Zheng VmdkExtent *extent; 7877fa60fa3SFam Zheng 7887fa60fa3SFam Zheng while (*p) { 7897fa60fa3SFam Zheng /* parse extent line: 7907fa60fa3SFam Zheng * RW [size in sectors] FLAT "file-name.vmdk" OFFSET 7917fa60fa3SFam Zheng * or 7927fa60fa3SFam Zheng * RW [size in sectors] SPARSE "file-name.vmdk" 7937fa60fa3SFam Zheng */ 7947fa60fa3SFam Zheng flat_offset = -1; 795cd923475SPhilipp Hahn ret = sscanf(p, "%10s %" SCNd64 " %10s \"%511[^\n\r\"]\" %" SCNd64, 7967fa60fa3SFam Zheng access, §ors, type, fname, &flat_offset); 7977fa60fa3SFam Zheng if (ret < 4 || strcmp(access, "RW")) { 7987fa60fa3SFam Zheng goto next_line; 7997fa60fa3SFam Zheng } else if (!strcmp(type, "FLAT")) { 8007fa60fa3SFam Zheng if (ret != 5 || flat_offset < 0) { 8014823970bSFam Zheng error_setg(errp, "Invalid extent lines: \n%s", p); 8027fa60fa3SFam Zheng return -EINVAL; 8037fa60fa3SFam Zheng } 804dbbcaa8dSFam Zheng } else if (!strcmp(type, "VMFS")) { 805b47053bdSFam Zheng if (ret == 4) { 806dbbcaa8dSFam Zheng flat_offset = 0; 807b47053bdSFam Zheng } else { 808b47053bdSFam Zheng error_setg(errp, "Invalid extent lines:\n%s", p); 809b47053bdSFam Zheng return -EINVAL; 810b47053bdSFam Zheng } 8117fa60fa3SFam Zheng } else if (ret != 4) { 8124823970bSFam Zheng error_setg(errp, "Invalid extent lines:\n%s", p); 8137fa60fa3SFam Zheng return -EINVAL; 8147fa60fa3SFam Zheng } 8157fa60fa3SFam Zheng 8167fa60fa3SFam Zheng if (sectors <= 0 || 817daac8fdcSFam Zheng (strcmp(type, "FLAT") && strcmp(type, "SPARSE") && 81804d542c8SPaolo Bonzini strcmp(type, "VMFS") && strcmp(type, "VMFSSPARSE")) || 8197fa60fa3SFam Zheng (strcmp(access, "RW"))) { 8207fa60fa3SFam Zheng goto next_line; 8217fa60fa3SFam Zheng } 8227fa60fa3SFam Zheng 8237fa60fa3SFam Zheng path_combine(extent_path, sizeof(extent_path), 8247fa60fa3SFam Zheng desc_file_path, fname); 8252e40134bSMax Reitz extent_file = NULL; 8262e40134bSMax Reitz ret = bdrv_open(&extent_file, extent_path, NULL, NULL, 8272e40134bSMax Reitz bs->open_flags | BDRV_O_PROTOCOL, NULL, errp); 8287fa60fa3SFam Zheng if (ret) { 8297fa60fa3SFam Zheng return ret; 8307fa60fa3SFam Zheng } 83186c6b429SFam Zheng 83286c6b429SFam Zheng /* save to extents array */ 83304d542c8SPaolo Bonzini if (!strcmp(type, "FLAT") || !strcmp(type, "VMFS")) { 83486c6b429SFam Zheng /* FLAT extent */ 83586c6b429SFam Zheng 8368aa1331cSFam Zheng ret = vmdk_add_extent(bs, extent_file, true, sectors, 8374823970bSFam Zheng 0, 0, 0, 0, 0, &extent, errp); 8388aa1331cSFam Zheng if (ret < 0) { 8398aa1331cSFam Zheng return ret; 8408aa1331cSFam Zheng } 841f16f509dSFam Zheng extent->flat_start_offset = flat_offset << 9; 842daac8fdcSFam Zheng } else if (!strcmp(type, "SPARSE") || !strcmp(type, "VMFSSPARSE")) { 843daac8fdcSFam Zheng /* SPARSE extent and VMFSSPARSE extent are both "COWD" sparse file*/ 844d1833ef5SPaolo Bonzini char *buf = vmdk_read_desc(extent_file, 0, errp); 845d1833ef5SPaolo Bonzini if (!buf) { 846d1833ef5SPaolo Bonzini ret = -EINVAL; 847d1833ef5SPaolo Bonzini } else { 848d1833ef5SPaolo Bonzini ret = vmdk_open_sparse(bs, extent_file, bs->open_flags, buf, errp); 849d1833ef5SPaolo Bonzini } 85086c6b429SFam Zheng if (ret) { 851d1833ef5SPaolo Bonzini g_free(buf); 8524f6fd349SFam Zheng bdrv_unref(extent_file); 85386c6b429SFam Zheng return ret; 85486c6b429SFam Zheng } 855f4c129a3SFam Zheng extent = &s->extents[s->num_extents - 1]; 8567fa60fa3SFam Zheng } else { 8574823970bSFam Zheng error_setg(errp, "Unsupported extent type '%s'", type); 8587fa60fa3SFam Zheng return -ENOTSUP; 8597fa60fa3SFam Zheng } 860f4c129a3SFam Zheng extent->type = g_strdup(type); 8617fa60fa3SFam Zheng next_line: 8627fa60fa3SFam Zheng /* move to next line */ 863899f1ae2SFam Zheng while (*p) { 864899f1ae2SFam Zheng if (*p == '\n') { 8657fa60fa3SFam Zheng p++; 866899f1ae2SFam Zheng break; 8677fa60fa3SFam Zheng } 8687fa60fa3SFam Zheng p++; 8697fa60fa3SFam Zheng } 870899f1ae2SFam Zheng } 8717fa60fa3SFam Zheng return 0; 8727fa60fa3SFam Zheng } 8737fa60fa3SFam Zheng 874d1833ef5SPaolo Bonzini static int vmdk_open_desc_file(BlockDriverState *bs, int flags, char *buf, 875d1833ef5SPaolo Bonzini Error **errp) 8767fa60fa3SFam Zheng { 8777fa60fa3SFam Zheng int ret; 8787fa60fa3SFam Zheng char ct[128]; 8797fa60fa3SFam Zheng BDRVVmdkState *s = bs->opaque; 8807fa60fa3SFam Zheng 8817fa60fa3SFam Zheng if (vmdk_parse_description(buf, "createType", ct, sizeof(ct))) { 88276abe407SPaolo Bonzini error_setg(errp, "invalid VMDK image descriptor"); 88376abe407SPaolo Bonzini ret = -EINVAL; 8840bed087dSEvgeny Budilovsky goto exit; 8857fa60fa3SFam Zheng } 8866398de51SFam Zheng if (strcmp(ct, "monolithicFlat") && 88704d542c8SPaolo Bonzini strcmp(ct, "vmfs") && 888daac8fdcSFam Zheng strcmp(ct, "vmfsSparse") && 88986c6b429SFam Zheng strcmp(ct, "twoGbMaxExtentSparse") && 8906398de51SFam Zheng strcmp(ct, "twoGbMaxExtentFlat")) { 8914823970bSFam Zheng error_setg(errp, "Unsupported image type '%s'", ct); 8920bed087dSEvgeny Budilovsky ret = -ENOTSUP; 8930bed087dSEvgeny Budilovsky goto exit; 8947fa60fa3SFam Zheng } 895f4c129a3SFam Zheng s->create_type = g_strdup(ct); 8967fa60fa3SFam Zheng s->desc_offset = 0; 8974823970bSFam Zheng ret = vmdk_parse_extents(buf, bs, bs->file->filename, errp); 8980bed087dSEvgeny Budilovsky exit: 8990bed087dSEvgeny Budilovsky return ret; 9007fa60fa3SFam Zheng } 9017fa60fa3SFam Zheng 902015a1036SMax Reitz static int vmdk_open(BlockDriverState *bs, QDict *options, int flags, 903015a1036SMax Reitz Error **errp) 904b4b3ab14SFam Zheng { 905d1833ef5SPaolo Bonzini char *buf = NULL; 90686c6b429SFam Zheng int ret; 90786c6b429SFam Zheng BDRVVmdkState *s = bs->opaque; 90837f09e5eSPaolo Bonzini uint32_t magic; 909b4b3ab14SFam Zheng 910d1833ef5SPaolo Bonzini buf = vmdk_read_desc(bs->file, 0, errp); 911d1833ef5SPaolo Bonzini if (!buf) { 912d1833ef5SPaolo Bonzini return -EINVAL; 913d1833ef5SPaolo Bonzini } 914d1833ef5SPaolo Bonzini 91537f09e5eSPaolo Bonzini magic = ldl_be_p(buf); 91637f09e5eSPaolo Bonzini switch (magic) { 91737f09e5eSPaolo Bonzini case VMDK3_MAGIC: 91837f09e5eSPaolo Bonzini case VMDK4_MAGIC: 91937f09e5eSPaolo Bonzini ret = vmdk_open_sparse(bs, bs->file, flags, buf, errp); 92086c6b429SFam Zheng s->desc_offset = 0x200; 92137f09e5eSPaolo Bonzini break; 92237f09e5eSPaolo Bonzini default: 923d1833ef5SPaolo Bonzini ret = vmdk_open_desc_file(bs, flags, buf, errp); 92437f09e5eSPaolo Bonzini break; 92537f09e5eSPaolo Bonzini } 926bae0a0ccSPaolo Bonzini if (ret) { 927bae0a0ccSPaolo Bonzini goto fail; 928bae0a0ccSPaolo Bonzini } 92937f09e5eSPaolo Bonzini 93086c6b429SFam Zheng /* try to open parent images, if exist */ 93186c6b429SFam Zheng ret = vmdk_parent_open(bs); 93286c6b429SFam Zheng if (ret) { 933bae0a0ccSPaolo Bonzini goto fail; 934b4b3ab14SFam Zheng } 935f4c129a3SFam Zheng s->cid = vmdk_read_cid(bs, 0); 93686c6b429SFam Zheng s->parent_cid = vmdk_read_cid(bs, 1); 937848c66e8SPaolo Bonzini qemu_co_mutex_init(&s->lock); 9382bc3166cSKevin Wolf 9392bc3166cSKevin Wolf /* Disable migration when VMDK images are used */ 9402bc3166cSKevin Wolf error_set(&s->migration_blocker, 9412bc3166cSKevin Wolf QERR_BLOCK_FORMAT_FEATURE_NOT_SUPPORTED, 9422bc3166cSKevin Wolf "vmdk", bs->device_name, "live migration"); 9432bc3166cSKevin Wolf migrate_add_blocker(s->migration_blocker); 944d1833ef5SPaolo Bonzini g_free(buf); 9452bc3166cSKevin Wolf return 0; 946bae0a0ccSPaolo Bonzini 947bae0a0ccSPaolo Bonzini fail: 948d1833ef5SPaolo Bonzini g_free(buf); 949f4c129a3SFam Zheng g_free(s->create_type); 950f4c129a3SFam Zheng s->create_type = NULL; 951bae0a0ccSPaolo Bonzini vmdk_free_extents(bs); 952bae0a0ccSPaolo Bonzini return ret; 953019d6b8fSAnthony Liguori } 954019d6b8fSAnthony Liguori 955d34682cdSKevin Wolf 9563baca891SKevin Wolf static void vmdk_refresh_limits(BlockDriverState *bs, Error **errp) 957d34682cdSKevin Wolf { 958d34682cdSKevin Wolf BDRVVmdkState *s = bs->opaque; 959d34682cdSKevin Wolf int i; 960d34682cdSKevin Wolf 961d34682cdSKevin Wolf for (i = 0; i < s->num_extents; i++) { 962d34682cdSKevin Wolf if (!s->extents[i].flat) { 963d34682cdSKevin Wolf bs->bl.write_zeroes_alignment = 964d34682cdSKevin Wolf MAX(bs->bl.write_zeroes_alignment, 965d34682cdSKevin Wolf s->extents[i].cluster_sectors); 966d34682cdSKevin Wolf } 967d34682cdSKevin Wolf } 968d34682cdSKevin Wolf } 969d34682cdSKevin Wolf 970c6ac36e1SFam Zheng /** 971c6ac36e1SFam Zheng * get_whole_cluster 972c6ac36e1SFam Zheng * 973c6ac36e1SFam Zheng * Copy backing file's cluster that covers @sector_num, otherwise write zero, 974c6ac36e1SFam Zheng * to the cluster at @cluster_sector_num. 975c6ac36e1SFam Zheng * 976c6ac36e1SFam Zheng * If @skip_start_sector < @skip_end_sector, the relative range 977c6ac36e1SFam Zheng * [@skip_start_sector, @skip_end_sector) is not copied or written, and leave 978c6ac36e1SFam Zheng * it for call to write user data in the request. 979c6ac36e1SFam Zheng */ 980b3976d3cSFam Zheng static int get_whole_cluster(BlockDriverState *bs, 981b3976d3cSFam Zheng VmdkExtent *extent, 982c6ac36e1SFam Zheng uint64_t cluster_sector_num, 983c6ac36e1SFam Zheng uint64_t sector_num, 984c6ac36e1SFam Zheng uint64_t skip_start_sector, 985c6ac36e1SFam Zheng uint64_t skip_end_sector) 986019d6b8fSAnthony Liguori { 987bf81507dSFam Zheng int ret = VMDK_OK; 988c6ac36e1SFam Zheng int64_t cluster_bytes; 989c6ac36e1SFam Zheng uint8_t *whole_grain; 990019d6b8fSAnthony Liguori 991c6ac36e1SFam Zheng /* For COW, align request sector_num to cluster start */ 992c6ac36e1SFam Zheng sector_num = QEMU_ALIGN_DOWN(sector_num, extent->cluster_sectors); 993c6ac36e1SFam Zheng cluster_bytes = extent->cluster_sectors << BDRV_SECTOR_BITS; 994c6ac36e1SFam Zheng whole_grain = qemu_blockalign(bs, cluster_bytes); 995c6ac36e1SFam Zheng 996c6ac36e1SFam Zheng if (!bs->backing_hd) { 997c6ac36e1SFam Zheng memset(whole_grain, 0, skip_start_sector << BDRV_SECTOR_BITS); 998c6ac36e1SFam Zheng memset(whole_grain + (skip_end_sector << BDRV_SECTOR_BITS), 0, 999c6ac36e1SFam Zheng cluster_bytes - (skip_end_sector << BDRV_SECTOR_BITS)); 1000c6ac36e1SFam Zheng } 1001c6ac36e1SFam Zheng 1002c6ac36e1SFam Zheng assert(skip_end_sector <= extent->cluster_sectors); 10030e69c543SFam Zheng /* we will be here if it's first write on non-exist grain(cluster). 10040e69c543SFam Zheng * try to read from parent image, if exist */ 1005c6ac36e1SFam Zheng if (bs->backing_hd && !vmdk_is_cid_valid(bs)) { 1006c6ac36e1SFam Zheng ret = VMDK_ERROR; 1007c6ac36e1SFam Zheng goto exit; 1008c6ac36e1SFam Zheng } 1009c6ac36e1SFam Zheng 1010c6ac36e1SFam Zheng /* Read backing data before skip range */ 1011c6ac36e1SFam Zheng if (skip_start_sector > 0) { 1012b171271aSKevin Wolf if (bs->backing_hd) { 1013c6ac36e1SFam Zheng ret = bdrv_read(bs->backing_hd, sector_num, 1014c6ac36e1SFam Zheng whole_grain, skip_start_sector); 1015c336500dSKevin Wolf if (ret < 0) { 1016bf81507dSFam Zheng ret = VMDK_ERROR; 1017bf81507dSFam Zheng goto exit; 1018019d6b8fSAnthony Liguori } 1019019d6b8fSAnthony Liguori } 1020c6ac36e1SFam Zheng ret = bdrv_write(extent->file, cluster_sector_num, whole_grain, 1021c6ac36e1SFam Zheng skip_start_sector); 1022c6ac36e1SFam Zheng if (ret < 0) { 1023c6ac36e1SFam Zheng ret = VMDK_ERROR; 1024c6ac36e1SFam Zheng goto exit; 1025c6ac36e1SFam Zheng } 1026c6ac36e1SFam Zheng } 1027c6ac36e1SFam Zheng /* Read backing data after skip range */ 1028c6ac36e1SFam Zheng if (skip_end_sector < extent->cluster_sectors) { 1029c6ac36e1SFam Zheng if (bs->backing_hd) { 1030c6ac36e1SFam Zheng ret = bdrv_read(bs->backing_hd, sector_num + skip_end_sector, 1031c6ac36e1SFam Zheng whole_grain + (skip_end_sector << BDRV_SECTOR_BITS), 1032c6ac36e1SFam Zheng extent->cluster_sectors - skip_end_sector); 1033c6ac36e1SFam Zheng if (ret < 0) { 1034c6ac36e1SFam Zheng ret = VMDK_ERROR; 1035c6ac36e1SFam Zheng goto exit; 1036c6ac36e1SFam Zheng } 1037c6ac36e1SFam Zheng } 1038c6ac36e1SFam Zheng ret = bdrv_write(extent->file, cluster_sector_num + skip_end_sector, 1039c6ac36e1SFam Zheng whole_grain + (skip_end_sector << BDRV_SECTOR_BITS), 1040c6ac36e1SFam Zheng extent->cluster_sectors - skip_end_sector); 1041c6ac36e1SFam Zheng if (ret < 0) { 1042c6ac36e1SFam Zheng ret = VMDK_ERROR; 1043c6ac36e1SFam Zheng goto exit; 1044c6ac36e1SFam Zheng } 1045c6ac36e1SFam Zheng } 1046c6ac36e1SFam Zheng 1047bf81507dSFam Zheng exit: 1048bf81507dSFam Zheng qemu_vfree(whole_grain); 1049bf81507dSFam Zheng return ret; 1050019d6b8fSAnthony Liguori } 1051019d6b8fSAnthony Liguori 1052c6ac36e1SFam Zheng static int vmdk_L2update(VmdkExtent *extent, VmdkMetaData *m_data, 1053c6ac36e1SFam Zheng uint32_t offset) 1054019d6b8fSAnthony Liguori { 1055c6ac36e1SFam Zheng offset = cpu_to_le32(offset); 1056019d6b8fSAnthony Liguori /* update L2 table */ 1057b3976d3cSFam Zheng if (bdrv_pwrite_sync( 1058b3976d3cSFam Zheng extent->file, 1059b3976d3cSFam Zheng ((int64_t)m_data->l2_offset * 512) 1060c6ac36e1SFam Zheng + (m_data->l2_index * sizeof(offset)), 1061e304e8e5SFam Zheng &offset, sizeof(offset)) < 0) { 106265f74725SFam Zheng return VMDK_ERROR; 1063b3976d3cSFam Zheng } 1064019d6b8fSAnthony Liguori /* update backup L2 table */ 1065b3976d3cSFam Zheng if (extent->l1_backup_table_offset != 0) { 1066b3976d3cSFam Zheng m_data->l2_offset = extent->l1_backup_table[m_data->l1_index]; 1067b3976d3cSFam Zheng if (bdrv_pwrite_sync( 1068b3976d3cSFam Zheng extent->file, 1069b3976d3cSFam Zheng ((int64_t)m_data->l2_offset * 512) 1070c6ac36e1SFam Zheng + (m_data->l2_index * sizeof(offset)), 1071e304e8e5SFam Zheng &offset, sizeof(offset)) < 0) { 107265f74725SFam Zheng return VMDK_ERROR; 1073019d6b8fSAnthony Liguori } 1074b3976d3cSFam Zheng } 1075cdeaf1f1SFam Zheng if (m_data->l2_cache_entry) { 1076cdeaf1f1SFam Zheng *m_data->l2_cache_entry = offset; 1077cdeaf1f1SFam Zheng } 1078019d6b8fSAnthony Liguori 107965f74725SFam Zheng return VMDK_OK; 1080019d6b8fSAnthony Liguori } 1081019d6b8fSAnthony Liguori 1082c6ac36e1SFam Zheng /** 1083c6ac36e1SFam Zheng * get_cluster_offset 1084c6ac36e1SFam Zheng * 1085c6ac36e1SFam Zheng * Look up cluster offset in extent file by sector number, and store in 1086c6ac36e1SFam Zheng * @cluster_offset. 1087c6ac36e1SFam Zheng * 1088c6ac36e1SFam Zheng * For flat extents, the start offset as parsed from the description file is 1089c6ac36e1SFam Zheng * returned. 1090c6ac36e1SFam Zheng * 1091c6ac36e1SFam Zheng * For sparse extents, look up in L1, L2 table. If allocate is true, return an 1092c6ac36e1SFam Zheng * offset for a new cluster and update L2 cache. If there is a backing file, 1093c6ac36e1SFam Zheng * COW is done before returning; otherwise, zeroes are written to the allocated 1094c6ac36e1SFam Zheng * cluster. Both COW and zero writing skips the sector range 1095c6ac36e1SFam Zheng * [@skip_start_sector, @skip_end_sector) passed in by caller, because caller 1096c6ac36e1SFam Zheng * has new data to write there. 1097c6ac36e1SFam Zheng * 1098c6ac36e1SFam Zheng * Returns: VMDK_OK if cluster exists and mapped in the image. 1099c6ac36e1SFam Zheng * VMDK_UNALLOC if cluster is not mapped and @allocate is false. 1100c6ac36e1SFam Zheng * VMDK_ERROR if failed. 1101c6ac36e1SFam Zheng */ 110291b85bd3SFam Zheng static int get_cluster_offset(BlockDriverState *bs, 1103b3976d3cSFam Zheng VmdkExtent *extent, 1104b3976d3cSFam Zheng VmdkMetaData *m_data, 110591b85bd3SFam Zheng uint64_t offset, 1106c6ac36e1SFam Zheng bool allocate, 1107c6ac36e1SFam Zheng uint64_t *cluster_offset, 1108c6ac36e1SFam Zheng uint64_t skip_start_sector, 1109c6ac36e1SFam Zheng uint64_t skip_end_sector) 1110019d6b8fSAnthony Liguori { 1111019d6b8fSAnthony Liguori unsigned int l1_index, l2_offset, l2_index; 1112019d6b8fSAnthony Liguori int min_index, i, j; 1113e304e8e5SFam Zheng uint32_t min_count, *l2_table; 111414ead646SFam Zheng bool zeroed = false; 1115c6ac36e1SFam Zheng int64_t ret; 1116c6ac36e1SFam Zheng int32_t cluster_sector; 1117019d6b8fSAnthony Liguori 1118ae261c86SFam Zheng if (m_data) { 1119019d6b8fSAnthony Liguori m_data->valid = 0; 1120ae261c86SFam Zheng } 112191b85bd3SFam Zheng if (extent->flat) { 11227fa60fa3SFam Zheng *cluster_offset = extent->flat_start_offset; 112365f74725SFam Zheng return VMDK_OK; 112491b85bd3SFam Zheng } 1125019d6b8fSAnthony Liguori 11266398de51SFam Zheng offset -= (extent->end_sector - extent->sectors) * SECTOR_SIZE; 1127b3976d3cSFam Zheng l1_index = (offset >> 9) / extent->l1_entry_sectors; 1128b3976d3cSFam Zheng if (l1_index >= extent->l1_size) { 112965f74725SFam Zheng return VMDK_ERROR; 1130b3976d3cSFam Zheng } 1131b3976d3cSFam Zheng l2_offset = extent->l1_table[l1_index]; 1132b3976d3cSFam Zheng if (!l2_offset) { 113365f74725SFam Zheng return VMDK_UNALLOC; 1134b3976d3cSFam Zheng } 1135019d6b8fSAnthony Liguori for (i = 0; i < L2_CACHE_SIZE; i++) { 1136b3976d3cSFam Zheng if (l2_offset == extent->l2_cache_offsets[i]) { 1137019d6b8fSAnthony Liguori /* increment the hit count */ 1138b3976d3cSFam Zheng if (++extent->l2_cache_counts[i] == 0xffffffff) { 1139019d6b8fSAnthony Liguori for (j = 0; j < L2_CACHE_SIZE; j++) { 1140b3976d3cSFam Zheng extent->l2_cache_counts[j] >>= 1; 1141019d6b8fSAnthony Liguori } 1142019d6b8fSAnthony Liguori } 1143b3976d3cSFam Zheng l2_table = extent->l2_cache + (i * extent->l2_size); 1144019d6b8fSAnthony Liguori goto found; 1145019d6b8fSAnthony Liguori } 1146019d6b8fSAnthony Liguori } 1147019d6b8fSAnthony Liguori /* not found: load a new entry in the least used one */ 1148019d6b8fSAnthony Liguori min_index = 0; 1149019d6b8fSAnthony Liguori min_count = 0xffffffff; 1150019d6b8fSAnthony Liguori for (i = 0; i < L2_CACHE_SIZE; i++) { 1151b3976d3cSFam Zheng if (extent->l2_cache_counts[i] < min_count) { 1152b3976d3cSFam Zheng min_count = extent->l2_cache_counts[i]; 1153019d6b8fSAnthony Liguori min_index = i; 1154019d6b8fSAnthony Liguori } 1155019d6b8fSAnthony Liguori } 1156b3976d3cSFam Zheng l2_table = extent->l2_cache + (min_index * extent->l2_size); 1157b3976d3cSFam Zheng if (bdrv_pread( 1158b3976d3cSFam Zheng extent->file, 1159b3976d3cSFam Zheng (int64_t)l2_offset * 512, 1160b3976d3cSFam Zheng l2_table, 1161b3976d3cSFam Zheng extent->l2_size * sizeof(uint32_t) 1162b3976d3cSFam Zheng ) != extent->l2_size * sizeof(uint32_t)) { 116365f74725SFam Zheng return VMDK_ERROR; 1164b3976d3cSFam Zheng } 1165019d6b8fSAnthony Liguori 1166b3976d3cSFam Zheng extent->l2_cache_offsets[min_index] = l2_offset; 1167b3976d3cSFam Zheng extent->l2_cache_counts[min_index] = 1; 1168019d6b8fSAnthony Liguori found: 1169b3976d3cSFam Zheng l2_index = ((offset >> 9) / extent->cluster_sectors) % extent->l2_size; 1170c6ac36e1SFam Zheng cluster_sector = le32_to_cpu(l2_table[l2_index]); 1171019d6b8fSAnthony Liguori 1172cdeaf1f1SFam Zheng if (m_data) { 1173cdeaf1f1SFam Zheng m_data->valid = 1; 1174cdeaf1f1SFam Zheng m_data->l1_index = l1_index; 1175cdeaf1f1SFam Zheng m_data->l2_index = l2_index; 1176cdeaf1f1SFam Zheng m_data->l2_offset = l2_offset; 1177cdeaf1f1SFam Zheng m_data->l2_cache_entry = &l2_table[l2_index]; 1178cdeaf1f1SFam Zheng } 1179c6ac36e1SFam Zheng if (extent->has_zero_grain && cluster_sector == VMDK_GTE_ZEROED) { 118014ead646SFam Zheng zeroed = true; 118114ead646SFam Zheng } 118214ead646SFam Zheng 1183c6ac36e1SFam Zheng if (!cluster_sector || zeroed) { 118491b85bd3SFam Zheng if (!allocate) { 118514ead646SFam Zheng return zeroed ? VMDK_ZEROED : VMDK_UNALLOC; 118691b85bd3SFam Zheng } 11879949f97eSKevin Wolf 1188c6ac36e1SFam Zheng cluster_sector = extent->next_cluster_sector; 1189c6ac36e1SFam Zheng extent->next_cluster_sector += extent->cluster_sectors; 11909949f97eSKevin Wolf 1191019d6b8fSAnthony Liguori /* First of all we write grain itself, to avoid race condition 1192019d6b8fSAnthony Liguori * that may to corrupt the image. 1193019d6b8fSAnthony Liguori * This problem may occur because of insufficient space on host disk 1194019d6b8fSAnthony Liguori * or inappropriate VM shutdown. 1195019d6b8fSAnthony Liguori */ 1196c6ac36e1SFam Zheng ret = get_whole_cluster(bs, extent, 1197c6ac36e1SFam Zheng cluster_sector, 1198c6ac36e1SFam Zheng offset >> BDRV_SECTOR_BITS, 1199c6ac36e1SFam Zheng skip_start_sector, skip_end_sector); 1200c6ac36e1SFam Zheng if (ret) { 1201c6ac36e1SFam Zheng return ret; 1202019d6b8fSAnthony Liguori } 1203019d6b8fSAnthony Liguori } 1204c6ac36e1SFam Zheng *cluster_offset = cluster_sector << BDRV_SECTOR_BITS; 120565f74725SFam Zheng return VMDK_OK; 1206019d6b8fSAnthony Liguori } 1207019d6b8fSAnthony Liguori 1208b3976d3cSFam Zheng static VmdkExtent *find_extent(BDRVVmdkState *s, 1209b3976d3cSFam Zheng int64_t sector_num, VmdkExtent *start_hint) 1210b3976d3cSFam Zheng { 1211b3976d3cSFam Zheng VmdkExtent *extent = start_hint; 1212b3976d3cSFam Zheng 1213b3976d3cSFam Zheng if (!extent) { 1214b3976d3cSFam Zheng extent = &s->extents[0]; 1215b3976d3cSFam Zheng } 1216b3976d3cSFam Zheng while (extent < &s->extents[s->num_extents]) { 1217b3976d3cSFam Zheng if (sector_num < extent->end_sector) { 1218b3976d3cSFam Zheng return extent; 1219b3976d3cSFam Zheng } 1220b3976d3cSFam Zheng extent++; 1221b3976d3cSFam Zheng } 1222b3976d3cSFam Zheng return NULL; 1223b3976d3cSFam Zheng } 1224b3976d3cSFam Zheng 1225b6b8a333SPaolo Bonzini static int64_t coroutine_fn vmdk_co_get_block_status(BlockDriverState *bs, 1226f8a2e5e3SStefan Hajnoczi int64_t sector_num, int nb_sectors, int *pnum) 1227019d6b8fSAnthony Liguori { 1228019d6b8fSAnthony Liguori BDRVVmdkState *s = bs->opaque; 1229b3976d3cSFam Zheng int64_t index_in_cluster, n, ret; 1230b3976d3cSFam Zheng uint64_t offset; 1231b3976d3cSFam Zheng VmdkExtent *extent; 1232b3976d3cSFam Zheng 1233b3976d3cSFam Zheng extent = find_extent(s, sector_num, NULL); 1234b3976d3cSFam Zheng if (!extent) { 1235b3976d3cSFam Zheng return 0; 1236b3976d3cSFam Zheng } 1237f8a2e5e3SStefan Hajnoczi qemu_co_mutex_lock(&s->lock); 123891b85bd3SFam Zheng ret = get_cluster_offset(bs, extent, NULL, 1239c6ac36e1SFam Zheng sector_num * 512, false, &offset, 1240c6ac36e1SFam Zheng 0, 0); 1241f8a2e5e3SStefan Hajnoczi qemu_co_mutex_unlock(&s->lock); 124214ead646SFam Zheng 12434bc74be9SPaolo Bonzini switch (ret) { 12444bc74be9SPaolo Bonzini case VMDK_ERROR: 12454bc74be9SPaolo Bonzini ret = -EIO; 12464bc74be9SPaolo Bonzini break; 12474bc74be9SPaolo Bonzini case VMDK_UNALLOC: 12484bc74be9SPaolo Bonzini ret = 0; 12494bc74be9SPaolo Bonzini break; 12504bc74be9SPaolo Bonzini case VMDK_ZEROED: 12514bc74be9SPaolo Bonzini ret = BDRV_BLOCK_ZERO; 12524bc74be9SPaolo Bonzini break; 12534bc74be9SPaolo Bonzini case VMDK_OK: 12544bc74be9SPaolo Bonzini ret = BDRV_BLOCK_DATA; 12553eba13ecSPeter Lieven if (extent->file == bs->file && !extent->compressed) { 12564bc74be9SPaolo Bonzini ret |= BDRV_BLOCK_OFFSET_VALID | offset; 12574bc74be9SPaolo Bonzini } 12584bc74be9SPaolo Bonzini 12594bc74be9SPaolo Bonzini break; 12604bc74be9SPaolo Bonzini } 126191b85bd3SFam Zheng 1262b3976d3cSFam Zheng index_in_cluster = sector_num % extent->cluster_sectors; 1263b3976d3cSFam Zheng n = extent->cluster_sectors - index_in_cluster; 1264ae261c86SFam Zheng if (n > nb_sectors) { 1265019d6b8fSAnthony Liguori n = nb_sectors; 1266ae261c86SFam Zheng } 1267019d6b8fSAnthony Liguori *pnum = n; 1268b3976d3cSFam Zheng return ret; 1269019d6b8fSAnthony Liguori } 1270019d6b8fSAnthony Liguori 1271dd3f6ee2SFam Zheng static int vmdk_write_extent(VmdkExtent *extent, int64_t cluster_offset, 1272dd3f6ee2SFam Zheng int64_t offset_in_cluster, const uint8_t *buf, 1273dd3f6ee2SFam Zheng int nb_sectors, int64_t sector_num) 1274dd3f6ee2SFam Zheng { 1275dd3f6ee2SFam Zheng int ret; 12762b2c8c5dSFam Zheng VmdkGrainMarker *data = NULL; 12772b2c8c5dSFam Zheng uLongf buf_len; 1278dd3f6ee2SFam Zheng const uint8_t *write_buf = buf; 1279dd3f6ee2SFam Zheng int write_len = nb_sectors * 512; 1280dd3f6ee2SFam Zheng 12812b2c8c5dSFam Zheng if (extent->compressed) { 12822b2c8c5dSFam Zheng if (!extent->has_marker) { 12832b2c8c5dSFam Zheng ret = -EINVAL; 12842b2c8c5dSFam Zheng goto out; 12852b2c8c5dSFam Zheng } 12862b2c8c5dSFam Zheng buf_len = (extent->cluster_sectors << 9) * 2; 12872b2c8c5dSFam Zheng data = g_malloc(buf_len + sizeof(VmdkGrainMarker)); 12882b2c8c5dSFam Zheng if (compress(data->data, &buf_len, buf, nb_sectors << 9) != Z_OK || 12892b2c8c5dSFam Zheng buf_len == 0) { 12902b2c8c5dSFam Zheng ret = -EINVAL; 12912b2c8c5dSFam Zheng goto out; 12922b2c8c5dSFam Zheng } 12932b2c8c5dSFam Zheng data->lba = sector_num; 12942b2c8c5dSFam Zheng data->size = buf_len; 12952b2c8c5dSFam Zheng write_buf = (uint8_t *)data; 12962b2c8c5dSFam Zheng write_len = buf_len + sizeof(VmdkGrainMarker); 12972b2c8c5dSFam Zheng } 1298dd3f6ee2SFam Zheng ret = bdrv_pwrite(extent->file, 1299dd3f6ee2SFam Zheng cluster_offset + offset_in_cluster, 1300dd3f6ee2SFam Zheng write_buf, 1301dd3f6ee2SFam Zheng write_len); 1302dd3f6ee2SFam Zheng if (ret != write_len) { 1303dd3f6ee2SFam Zheng ret = ret < 0 ? ret : -EIO; 1304dd3f6ee2SFam Zheng goto out; 1305dd3f6ee2SFam Zheng } 1306dd3f6ee2SFam Zheng ret = 0; 1307dd3f6ee2SFam Zheng out: 13082b2c8c5dSFam Zheng g_free(data); 1309dd3f6ee2SFam Zheng return ret; 1310dd3f6ee2SFam Zheng } 1311dd3f6ee2SFam Zheng 1312dd3f6ee2SFam Zheng static int vmdk_read_extent(VmdkExtent *extent, int64_t cluster_offset, 1313dd3f6ee2SFam Zheng int64_t offset_in_cluster, uint8_t *buf, 1314dd3f6ee2SFam Zheng int nb_sectors) 1315dd3f6ee2SFam Zheng { 1316dd3f6ee2SFam Zheng int ret; 13172b2c8c5dSFam Zheng int cluster_bytes, buf_bytes; 13182b2c8c5dSFam Zheng uint8_t *cluster_buf, *compressed_data; 13192b2c8c5dSFam Zheng uint8_t *uncomp_buf; 13202b2c8c5dSFam Zheng uint32_t data_len; 13212b2c8c5dSFam Zheng VmdkGrainMarker *marker; 13222b2c8c5dSFam Zheng uLongf buf_len; 1323dd3f6ee2SFam Zheng 13242b2c8c5dSFam Zheng 13252b2c8c5dSFam Zheng if (!extent->compressed) { 1326dd3f6ee2SFam Zheng ret = bdrv_pread(extent->file, 1327dd3f6ee2SFam Zheng cluster_offset + offset_in_cluster, 1328dd3f6ee2SFam Zheng buf, nb_sectors * 512); 1329dd3f6ee2SFam Zheng if (ret == nb_sectors * 512) { 1330dd3f6ee2SFam Zheng return 0; 1331dd3f6ee2SFam Zheng } else { 1332dd3f6ee2SFam Zheng return -EIO; 1333dd3f6ee2SFam Zheng } 1334dd3f6ee2SFam Zheng } 13352b2c8c5dSFam Zheng cluster_bytes = extent->cluster_sectors * 512; 13362b2c8c5dSFam Zheng /* Read two clusters in case GrainMarker + compressed data > one cluster */ 13372b2c8c5dSFam Zheng buf_bytes = cluster_bytes * 2; 13382b2c8c5dSFam Zheng cluster_buf = g_malloc(buf_bytes); 13392b2c8c5dSFam Zheng uncomp_buf = g_malloc(cluster_bytes); 13402b2c8c5dSFam Zheng ret = bdrv_pread(extent->file, 13412b2c8c5dSFam Zheng cluster_offset, 13422b2c8c5dSFam Zheng cluster_buf, buf_bytes); 13432b2c8c5dSFam Zheng if (ret < 0) { 13442b2c8c5dSFam Zheng goto out; 13452b2c8c5dSFam Zheng } 13462b2c8c5dSFam Zheng compressed_data = cluster_buf; 13472b2c8c5dSFam Zheng buf_len = cluster_bytes; 13482b2c8c5dSFam Zheng data_len = cluster_bytes; 13492b2c8c5dSFam Zheng if (extent->has_marker) { 13502b2c8c5dSFam Zheng marker = (VmdkGrainMarker *)cluster_buf; 13512b2c8c5dSFam Zheng compressed_data = marker->data; 13522b2c8c5dSFam Zheng data_len = le32_to_cpu(marker->size); 13532b2c8c5dSFam Zheng } 13542b2c8c5dSFam Zheng if (!data_len || data_len > buf_bytes) { 13552b2c8c5dSFam Zheng ret = -EINVAL; 13562b2c8c5dSFam Zheng goto out; 13572b2c8c5dSFam Zheng } 13582b2c8c5dSFam Zheng ret = uncompress(uncomp_buf, &buf_len, compressed_data, data_len); 13592b2c8c5dSFam Zheng if (ret != Z_OK) { 13602b2c8c5dSFam Zheng ret = -EINVAL; 13612b2c8c5dSFam Zheng goto out; 13622b2c8c5dSFam Zheng 13632b2c8c5dSFam Zheng } 13642b2c8c5dSFam Zheng if (offset_in_cluster < 0 || 13652b2c8c5dSFam Zheng offset_in_cluster + nb_sectors * 512 > buf_len) { 13662b2c8c5dSFam Zheng ret = -EINVAL; 13672b2c8c5dSFam Zheng goto out; 13682b2c8c5dSFam Zheng } 13692b2c8c5dSFam Zheng memcpy(buf, uncomp_buf + offset_in_cluster, nb_sectors * 512); 13702b2c8c5dSFam Zheng ret = 0; 13712b2c8c5dSFam Zheng 13722b2c8c5dSFam Zheng out: 13732b2c8c5dSFam Zheng g_free(uncomp_buf); 13742b2c8c5dSFam Zheng g_free(cluster_buf); 13752b2c8c5dSFam Zheng return ret; 13762b2c8c5dSFam Zheng } 1377dd3f6ee2SFam Zheng 1378019d6b8fSAnthony Liguori static int vmdk_read(BlockDriverState *bs, int64_t sector_num, 1379019d6b8fSAnthony Liguori uint8_t *buf, int nb_sectors) 1380019d6b8fSAnthony Liguori { 1381019d6b8fSAnthony Liguori BDRVVmdkState *s = bs->opaque; 1382b3976d3cSFam Zheng int ret; 1383b3976d3cSFam Zheng uint64_t n, index_in_cluster; 1384b1649faeSGerhard Wiesinger uint64_t extent_begin_sector, extent_relative_sector_num; 1385b3976d3cSFam Zheng VmdkExtent *extent = NULL; 1386019d6b8fSAnthony Liguori uint64_t cluster_offset; 1387019d6b8fSAnthony Liguori 1388019d6b8fSAnthony Liguori while (nb_sectors > 0) { 1389b3976d3cSFam Zheng extent = find_extent(s, sector_num, extent); 1390b3976d3cSFam Zheng if (!extent) { 1391b3976d3cSFam Zheng return -EIO; 1392b3976d3cSFam Zheng } 1393c6ac36e1SFam Zheng ret = get_cluster_offset(bs, extent, NULL, 1394c6ac36e1SFam Zheng sector_num << 9, false, &cluster_offset, 1395c6ac36e1SFam Zheng 0, 0); 1396b1649faeSGerhard Wiesinger extent_begin_sector = extent->end_sector - extent->sectors; 1397b1649faeSGerhard Wiesinger extent_relative_sector_num = sector_num - extent_begin_sector; 1398b1649faeSGerhard Wiesinger index_in_cluster = extent_relative_sector_num % extent->cluster_sectors; 1399b3976d3cSFam Zheng n = extent->cluster_sectors - index_in_cluster; 1400ae261c86SFam Zheng if (n > nb_sectors) { 1401019d6b8fSAnthony Liguori n = nb_sectors; 1402ae261c86SFam Zheng } 140314ead646SFam Zheng if (ret != VMDK_OK) { 140491b85bd3SFam Zheng /* if not allocated, try to read from parent image, if exist */ 140514ead646SFam Zheng if (bs->backing_hd && ret != VMDK_ZEROED) { 1406ae261c86SFam Zheng if (!vmdk_is_cid_valid(bs)) { 14077fa60fa3SFam Zheng return -EINVAL; 1408ae261c86SFam Zheng } 1409b171271aSKevin Wolf ret = bdrv_read(bs->backing_hd, sector_num, buf, n); 1410ae261c86SFam Zheng if (ret < 0) { 14117fa60fa3SFam Zheng return ret; 1412ae261c86SFam Zheng } 1413019d6b8fSAnthony Liguori } else { 1414019d6b8fSAnthony Liguori memset(buf, 0, 512 * n); 1415019d6b8fSAnthony Liguori } 1416019d6b8fSAnthony Liguori } else { 1417dd3f6ee2SFam Zheng ret = vmdk_read_extent(extent, 1418dd3f6ee2SFam Zheng cluster_offset, index_in_cluster * 512, 1419dd3f6ee2SFam Zheng buf, n); 1420dd3f6ee2SFam Zheng if (ret) { 14217fa60fa3SFam Zheng return ret; 14227fa60fa3SFam Zheng } 1423019d6b8fSAnthony Liguori } 1424019d6b8fSAnthony Liguori nb_sectors -= n; 1425019d6b8fSAnthony Liguori sector_num += n; 1426019d6b8fSAnthony Liguori buf += n * 512; 1427019d6b8fSAnthony Liguori } 1428019d6b8fSAnthony Liguori return 0; 1429019d6b8fSAnthony Liguori } 1430019d6b8fSAnthony Liguori 14312914caa0SPaolo Bonzini static coroutine_fn int vmdk_co_read(BlockDriverState *bs, int64_t sector_num, 14322914caa0SPaolo Bonzini uint8_t *buf, int nb_sectors) 14332914caa0SPaolo Bonzini { 14342914caa0SPaolo Bonzini int ret; 14352914caa0SPaolo Bonzini BDRVVmdkState *s = bs->opaque; 14362914caa0SPaolo Bonzini qemu_co_mutex_lock(&s->lock); 14372914caa0SPaolo Bonzini ret = vmdk_read(bs, sector_num, buf, nb_sectors); 14382914caa0SPaolo Bonzini qemu_co_mutex_unlock(&s->lock); 14392914caa0SPaolo Bonzini return ret; 14402914caa0SPaolo Bonzini } 14412914caa0SPaolo Bonzini 1442cdeaf1f1SFam Zheng /** 1443cdeaf1f1SFam Zheng * vmdk_write: 1444cdeaf1f1SFam Zheng * @zeroed: buf is ignored (data is zero), use zeroed_grain GTE feature 1445cdeaf1f1SFam Zheng * if possible, otherwise return -ENOTSUP. 14468e507243SFam Zheng * @zero_dry_run: used for zeroed == true only, don't update L2 table, just try 14478e507243SFam Zheng * with each cluster. By dry run we can find if the zero write 14488e507243SFam Zheng * is possible without modifying image data. 1449cdeaf1f1SFam Zheng * 1450cdeaf1f1SFam Zheng * Returns: error code with 0 for success. 1451cdeaf1f1SFam Zheng */ 1452019d6b8fSAnthony Liguori static int vmdk_write(BlockDriverState *bs, int64_t sector_num, 1453cdeaf1f1SFam Zheng const uint8_t *buf, int nb_sectors, 1454cdeaf1f1SFam Zheng bool zeroed, bool zero_dry_run) 1455019d6b8fSAnthony Liguori { 1456019d6b8fSAnthony Liguori BDRVVmdkState *s = bs->opaque; 1457b3976d3cSFam Zheng VmdkExtent *extent = NULL; 1458585ea0c8SFam Zheng int ret; 1459585ea0c8SFam Zheng int64_t index_in_cluster, n; 1460b1649faeSGerhard Wiesinger uint64_t extent_begin_sector, extent_relative_sector_num; 1461019d6b8fSAnthony Liguori uint64_t cluster_offset; 1462b3976d3cSFam Zheng VmdkMetaData m_data; 1463019d6b8fSAnthony Liguori 1464019d6b8fSAnthony Liguori if (sector_num > bs->total_sectors) { 14654823970bSFam Zheng error_report("Wrong offset: sector_num=0x%" PRIx64 1466019d6b8fSAnthony Liguori " total_sectors=0x%" PRIx64 "\n", 1467019d6b8fSAnthony Liguori sector_num, bs->total_sectors); 14687fa60fa3SFam Zheng return -EIO; 1469019d6b8fSAnthony Liguori } 1470019d6b8fSAnthony Liguori 1471019d6b8fSAnthony Liguori while (nb_sectors > 0) { 1472b3976d3cSFam Zheng extent = find_extent(s, sector_num, extent); 1473b3976d3cSFam Zheng if (!extent) { 1474b3976d3cSFam Zheng return -EIO; 1475b3976d3cSFam Zheng } 1476c6ac36e1SFam Zheng extent_begin_sector = extent->end_sector - extent->sectors; 1477c6ac36e1SFam Zheng extent_relative_sector_num = sector_num - extent_begin_sector; 1478c6ac36e1SFam Zheng index_in_cluster = extent_relative_sector_num % extent->cluster_sectors; 1479c6ac36e1SFam Zheng n = extent->cluster_sectors - index_in_cluster; 1480c6ac36e1SFam Zheng if (n > nb_sectors) { 1481c6ac36e1SFam Zheng n = nb_sectors; 1482c6ac36e1SFam Zheng } 1483c6ac36e1SFam Zheng ret = get_cluster_offset(bs, extent, &m_data, sector_num << 9, 1484c6ac36e1SFam Zheng !(extent->compressed || zeroed), 1485c6ac36e1SFam Zheng &cluster_offset, 1486c6ac36e1SFam Zheng index_in_cluster, index_in_cluster + n); 14872b2c8c5dSFam Zheng if (extent->compressed) { 148865f74725SFam Zheng if (ret == VMDK_OK) { 14892b2c8c5dSFam Zheng /* Refuse write to allocated cluster for streamOptimized */ 14904823970bSFam Zheng error_report("Could not write to allocated cluster" 14914823970bSFam Zheng " for streamOptimized"); 14922b2c8c5dSFam Zheng return -EIO; 14932b2c8c5dSFam Zheng } else { 14942b2c8c5dSFam Zheng /* allocate */ 1495c6ac36e1SFam Zheng ret = get_cluster_offset(bs, extent, &m_data, sector_num << 9, 1496c6ac36e1SFam Zheng true, &cluster_offset, 0, 0); 14972b2c8c5dSFam Zheng } 14982b2c8c5dSFam Zheng } 1499cdeaf1f1SFam Zheng if (ret == VMDK_ERROR) { 150091b85bd3SFam Zheng return -EINVAL; 1501b3976d3cSFam Zheng } 1502cdeaf1f1SFam Zheng if (zeroed) { 1503cdeaf1f1SFam Zheng /* Do zeroed write, buf is ignored */ 1504cdeaf1f1SFam Zheng if (extent->has_zero_grain && 1505cdeaf1f1SFam Zheng index_in_cluster == 0 && 1506cdeaf1f1SFam Zheng n >= extent->cluster_sectors) { 1507cdeaf1f1SFam Zheng n = extent->cluster_sectors; 1508cdeaf1f1SFam Zheng if (!zero_dry_run) { 1509cdeaf1f1SFam Zheng /* update L2 tables */ 1510c6ac36e1SFam Zheng if (vmdk_L2update(extent, &m_data, VMDK_GTE_ZEROED) 1511c6ac36e1SFam Zheng != VMDK_OK) { 1512cdeaf1f1SFam Zheng return -EIO; 1513cdeaf1f1SFam Zheng } 1514cdeaf1f1SFam Zheng } 1515cdeaf1f1SFam Zheng } else { 1516cdeaf1f1SFam Zheng return -ENOTSUP; 1517cdeaf1f1SFam Zheng } 1518cdeaf1f1SFam Zheng } else { 1519dd3f6ee2SFam Zheng ret = vmdk_write_extent(extent, 1520dd3f6ee2SFam Zheng cluster_offset, index_in_cluster * 512, 1521dd3f6ee2SFam Zheng buf, n, sector_num); 1522dd3f6ee2SFam Zheng if (ret) { 15237fa60fa3SFam Zheng return ret; 1524b3976d3cSFam Zheng } 1525019d6b8fSAnthony Liguori if (m_data.valid) { 1526019d6b8fSAnthony Liguori /* update L2 tables */ 1527c6ac36e1SFam Zheng if (vmdk_L2update(extent, &m_data, 1528c6ac36e1SFam Zheng cluster_offset >> BDRV_SECTOR_BITS) 1529c6ac36e1SFam Zheng != VMDK_OK) { 15307fa60fa3SFam Zheng return -EIO; 1531019d6b8fSAnthony Liguori } 1532b3976d3cSFam Zheng } 1533cdeaf1f1SFam Zheng } 1534019d6b8fSAnthony Liguori nb_sectors -= n; 1535019d6b8fSAnthony Liguori sector_num += n; 1536019d6b8fSAnthony Liguori buf += n * 512; 1537019d6b8fSAnthony Liguori 1538ae261c86SFam Zheng /* update CID on the first write every time the virtual disk is 1539ae261c86SFam Zheng * opened */ 154069b4d86dSFam Zheng if (!s->cid_updated) { 154199f1835dSKevin Wolf ret = vmdk_write_cid(bs, time(NULL)); 154299f1835dSKevin Wolf if (ret < 0) { 154399f1835dSKevin Wolf return ret; 154499f1835dSKevin Wolf } 154569b4d86dSFam Zheng s->cid_updated = true; 1546019d6b8fSAnthony Liguori } 1547019d6b8fSAnthony Liguori } 1548019d6b8fSAnthony Liguori return 0; 1549019d6b8fSAnthony Liguori } 1550019d6b8fSAnthony Liguori 1551e183ef75SPaolo Bonzini static coroutine_fn int vmdk_co_write(BlockDriverState *bs, int64_t sector_num, 1552e183ef75SPaolo Bonzini const uint8_t *buf, int nb_sectors) 1553e183ef75SPaolo Bonzini { 1554e183ef75SPaolo Bonzini int ret; 1555e183ef75SPaolo Bonzini BDRVVmdkState *s = bs->opaque; 1556e183ef75SPaolo Bonzini qemu_co_mutex_lock(&s->lock); 1557cdeaf1f1SFam Zheng ret = vmdk_write(bs, sector_num, buf, nb_sectors, false, false); 1558cdeaf1f1SFam Zheng qemu_co_mutex_unlock(&s->lock); 1559cdeaf1f1SFam Zheng return ret; 1560cdeaf1f1SFam Zheng } 1561cdeaf1f1SFam Zheng 1562ba0ad89eSFam Zheng static int vmdk_write_compressed(BlockDriverState *bs, 1563ba0ad89eSFam Zheng int64_t sector_num, 1564ba0ad89eSFam Zheng const uint8_t *buf, 1565ba0ad89eSFam Zheng int nb_sectors) 1566ba0ad89eSFam Zheng { 1567ba0ad89eSFam Zheng BDRVVmdkState *s = bs->opaque; 1568ba0ad89eSFam Zheng if (s->num_extents == 1 && s->extents[0].compressed) { 1569ba0ad89eSFam Zheng return vmdk_write(bs, sector_num, buf, nb_sectors, false, false); 1570ba0ad89eSFam Zheng } else { 1571ba0ad89eSFam Zheng return -ENOTSUP; 1572ba0ad89eSFam Zheng } 1573ba0ad89eSFam Zheng } 1574ba0ad89eSFam Zheng 1575cdeaf1f1SFam Zheng static int coroutine_fn vmdk_co_write_zeroes(BlockDriverState *bs, 1576cdeaf1f1SFam Zheng int64_t sector_num, 1577aa7bfbffSPeter Lieven int nb_sectors, 1578aa7bfbffSPeter Lieven BdrvRequestFlags flags) 1579cdeaf1f1SFam Zheng { 1580cdeaf1f1SFam Zheng int ret; 1581cdeaf1f1SFam Zheng BDRVVmdkState *s = bs->opaque; 1582cdeaf1f1SFam Zheng qemu_co_mutex_lock(&s->lock); 15838e507243SFam Zheng /* write zeroes could fail if sectors not aligned to cluster, test it with 15848e507243SFam Zheng * dry_run == true before really updating image */ 1585cdeaf1f1SFam Zheng ret = vmdk_write(bs, sector_num, NULL, nb_sectors, true, true); 1586cdeaf1f1SFam Zheng if (!ret) { 1587cdeaf1f1SFam Zheng ret = vmdk_write(bs, sector_num, NULL, nb_sectors, true, false); 1588cdeaf1f1SFam Zheng } 1589e183ef75SPaolo Bonzini qemu_co_mutex_unlock(&s->lock); 1590e183ef75SPaolo Bonzini return ret; 1591e183ef75SPaolo Bonzini } 1592e183ef75SPaolo Bonzini 15936c031aacSFam Zheng static int vmdk_create_extent(const char *filename, int64_t filesize, 1594917703c1SFam Zheng bool flat, bool compress, bool zeroed_grain, 15954ab15590SChunyan Liu QemuOpts *opts, Error **errp) 1596019d6b8fSAnthony Liguori { 1597f66fd6c3SFam Zheng int ret, i; 1598917703c1SFam Zheng BlockDriverState *bs = NULL; 1599019d6b8fSAnthony Liguori VMDK4Header header; 1600c13959c7SFam Zheng Error *local_err = NULL; 1601917703c1SFam Zheng uint32_t tmp, magic, grains, gd_sectors, gt_size, gt_count; 1602917703c1SFam Zheng uint32_t *gd_buf = NULL; 1603917703c1SFam Zheng int gd_buf_size; 16040e7e1989SKevin Wolf 16054ab15590SChunyan Liu ret = bdrv_create_file(filename, opts, &local_err); 1606f66fd6c3SFam Zheng if (ret < 0) { 1607917703c1SFam Zheng error_propagate(errp, local_err); 1608917703c1SFam Zheng goto exit; 1609917703c1SFam Zheng } 1610917703c1SFam Zheng 16112e40134bSMax Reitz assert(bs == NULL); 16122e40134bSMax Reitz ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL, 16132e40134bSMax Reitz NULL, &local_err); 1614917703c1SFam Zheng if (ret < 0) { 1615917703c1SFam Zheng error_propagate(errp, local_err); 1616917703c1SFam Zheng goto exit; 1617917703c1SFam Zheng } 1618917703c1SFam Zheng 1619917703c1SFam Zheng if (flat) { 1620917703c1SFam Zheng ret = bdrv_truncate(bs, filesize); 1621917703c1SFam Zheng if (ret < 0) { 162239a611a3SJeff Cody error_setg_errno(errp, -ret, "Could not truncate file"); 1623f66fd6c3SFam Zheng } 1624f66fd6c3SFam Zheng goto exit; 1625f66fd6c3SFam Zheng } 1626019d6b8fSAnthony Liguori magic = cpu_to_be32(VMDK4_MAGIC); 1627019d6b8fSAnthony Liguori memset(&header, 0, sizeof(header)); 162869e0b6dfSFam Zheng header.version = zeroed_grain ? 2 : 1; 162995b0aa42SFam Zheng header.flags = VMDK4_FLAG_RGD | VMDK4_FLAG_NL_DETECT 163069e0b6dfSFam Zheng | (compress ? VMDK4_FLAG_COMPRESS | VMDK4_FLAG_MARKER : 0) 163169e0b6dfSFam Zheng | (zeroed_grain ? VMDK4_FLAG_ZERO_GRAIN : 0); 16326c031aacSFam Zheng header.compressAlgorithm = compress ? VMDK4_COMPRESSION_DEFLATE : 0; 1633917703c1SFam Zheng header.capacity = filesize / BDRV_SECTOR_SIZE; 163416372ff0SAlexander Graf header.granularity = 128; 1635917703c1SFam Zheng header.num_gtes_per_gt = BDRV_SECTOR_SIZE; 1636019d6b8fSAnthony Liguori 1637917703c1SFam Zheng grains = DIV_ROUND_UP(filesize / BDRV_SECTOR_SIZE, header.granularity); 1638917703c1SFam Zheng gt_size = DIV_ROUND_UP(header.num_gtes_per_gt * sizeof(uint32_t), 1639917703c1SFam Zheng BDRV_SECTOR_SIZE); 1640917703c1SFam Zheng gt_count = DIV_ROUND_UP(grains, header.num_gtes_per_gt); 1641917703c1SFam Zheng gd_sectors = DIV_ROUND_UP(gt_count * sizeof(uint32_t), BDRV_SECTOR_SIZE); 1642019d6b8fSAnthony Liguori 1643019d6b8fSAnthony Liguori header.desc_offset = 1; 1644019d6b8fSAnthony Liguori header.desc_size = 20; 1645019d6b8fSAnthony Liguori header.rgd_offset = header.desc_offset + header.desc_size; 1646917703c1SFam Zheng header.gd_offset = header.rgd_offset + gd_sectors + (gt_size * gt_count); 1647019d6b8fSAnthony Liguori header.grain_offset = 1648917703c1SFam Zheng ROUND_UP(header.gd_offset + gd_sectors + (gt_size * gt_count), 1649917703c1SFam Zheng header.granularity); 165016372ff0SAlexander Graf /* swap endianness for all header fields */ 165116372ff0SAlexander Graf header.version = cpu_to_le32(header.version); 165216372ff0SAlexander Graf header.flags = cpu_to_le32(header.flags); 165316372ff0SAlexander Graf header.capacity = cpu_to_le64(header.capacity); 165416372ff0SAlexander Graf header.granularity = cpu_to_le64(header.granularity); 1655ca8804ceSFam Zheng header.num_gtes_per_gt = cpu_to_le32(header.num_gtes_per_gt); 1656019d6b8fSAnthony Liguori header.desc_offset = cpu_to_le64(header.desc_offset); 1657019d6b8fSAnthony Liguori header.desc_size = cpu_to_le64(header.desc_size); 1658019d6b8fSAnthony Liguori header.rgd_offset = cpu_to_le64(header.rgd_offset); 1659019d6b8fSAnthony Liguori header.gd_offset = cpu_to_le64(header.gd_offset); 1660019d6b8fSAnthony Liguori header.grain_offset = cpu_to_le64(header.grain_offset); 16616c031aacSFam Zheng header.compressAlgorithm = cpu_to_le16(header.compressAlgorithm); 1662019d6b8fSAnthony Liguori 1663019d6b8fSAnthony Liguori header.check_bytes[0] = 0xa; 1664019d6b8fSAnthony Liguori header.check_bytes[1] = 0x20; 1665019d6b8fSAnthony Liguori header.check_bytes[2] = 0xd; 1666019d6b8fSAnthony Liguori header.check_bytes[3] = 0xa; 1667019d6b8fSAnthony Liguori 1668019d6b8fSAnthony Liguori /* write all the data */ 1669917703c1SFam Zheng ret = bdrv_pwrite(bs, 0, &magic, sizeof(magic)); 1670917703c1SFam Zheng if (ret < 0) { 1671917703c1SFam Zheng error_set(errp, QERR_IO_ERROR); 16721640366cSKirill A. Shutemov goto exit; 16731640366cSKirill A. Shutemov } 1674917703c1SFam Zheng ret = bdrv_pwrite(bs, sizeof(magic), &header, sizeof(header)); 1675917703c1SFam Zheng if (ret < 0) { 1676917703c1SFam Zheng error_set(errp, QERR_IO_ERROR); 16771640366cSKirill A. Shutemov goto exit; 16781640366cSKirill A. Shutemov } 1679019d6b8fSAnthony Liguori 1680917703c1SFam Zheng ret = bdrv_truncate(bs, le64_to_cpu(header.grain_offset) << 9); 16811640366cSKirill A. Shutemov if (ret < 0) { 168239a611a3SJeff Cody error_setg_errno(errp, -ret, "Could not truncate file"); 16831640366cSKirill A. Shutemov goto exit; 16841640366cSKirill A. Shutemov } 1685019d6b8fSAnthony Liguori 1686019d6b8fSAnthony Liguori /* write grain directory */ 1687917703c1SFam Zheng gd_buf_size = gd_sectors * BDRV_SECTOR_SIZE; 1688917703c1SFam Zheng gd_buf = g_malloc0(gd_buf_size); 1689917703c1SFam Zheng for (i = 0, tmp = le64_to_cpu(header.rgd_offset) + gd_sectors; 16901640366cSKirill A. Shutemov i < gt_count; i++, tmp += gt_size) { 1691917703c1SFam Zheng gd_buf[i] = cpu_to_le32(tmp); 16921640366cSKirill A. Shutemov } 1693917703c1SFam Zheng ret = bdrv_pwrite(bs, le64_to_cpu(header.rgd_offset) * BDRV_SECTOR_SIZE, 1694917703c1SFam Zheng gd_buf, gd_buf_size); 1695917703c1SFam Zheng if (ret < 0) { 1696917703c1SFam Zheng error_set(errp, QERR_IO_ERROR); 1697917703c1SFam Zheng goto exit; 16981640366cSKirill A. Shutemov } 1699019d6b8fSAnthony Liguori 1700019d6b8fSAnthony Liguori /* write backup grain directory */ 1701917703c1SFam Zheng for (i = 0, tmp = le64_to_cpu(header.gd_offset) + gd_sectors; 17021640366cSKirill A. Shutemov i < gt_count; i++, tmp += gt_size) { 1703917703c1SFam Zheng gd_buf[i] = cpu_to_le32(tmp); 17041640366cSKirill A. Shutemov } 1705917703c1SFam Zheng ret = bdrv_pwrite(bs, le64_to_cpu(header.gd_offset) * BDRV_SECTOR_SIZE, 1706917703c1SFam Zheng gd_buf, gd_buf_size); 1707917703c1SFam Zheng if (ret < 0) { 1708917703c1SFam Zheng error_set(errp, QERR_IO_ERROR); 1709917703c1SFam Zheng goto exit; 17101640366cSKirill A. Shutemov } 1711019d6b8fSAnthony Liguori 1712f66fd6c3SFam Zheng ret = 0; 1713f66fd6c3SFam Zheng exit: 1714917703c1SFam Zheng if (bs) { 1715917703c1SFam Zheng bdrv_unref(bs); 1716917703c1SFam Zheng } 1717917703c1SFam Zheng g_free(gd_buf); 1718f66fd6c3SFam Zheng return ret; 1719f66fd6c3SFam Zheng } 1720019d6b8fSAnthony Liguori 1721f66fd6c3SFam Zheng static int filename_decompose(const char *filename, char *path, char *prefix, 17224823970bSFam Zheng char *postfix, size_t buf_len, Error **errp) 1723f66fd6c3SFam Zheng { 1724f66fd6c3SFam Zheng const char *p, *q; 1725f66fd6c3SFam Zheng 1726f66fd6c3SFam Zheng if (filename == NULL || !strlen(filename)) { 17274823970bSFam Zheng error_setg(errp, "No filename provided"); 172865f74725SFam Zheng return VMDK_ERROR; 1729f66fd6c3SFam Zheng } 1730f66fd6c3SFam Zheng p = strrchr(filename, '/'); 1731f66fd6c3SFam Zheng if (p == NULL) { 1732f66fd6c3SFam Zheng p = strrchr(filename, '\\'); 1733f66fd6c3SFam Zheng } 1734f66fd6c3SFam Zheng if (p == NULL) { 1735f66fd6c3SFam Zheng p = strrchr(filename, ':'); 1736f66fd6c3SFam Zheng } 1737f66fd6c3SFam Zheng if (p != NULL) { 1738f66fd6c3SFam Zheng p++; 1739f66fd6c3SFam Zheng if (p - filename >= buf_len) { 174065f74725SFam Zheng return VMDK_ERROR; 1741f66fd6c3SFam Zheng } 1742f66fd6c3SFam Zheng pstrcpy(path, p - filename + 1, filename); 1743f66fd6c3SFam Zheng } else { 1744f66fd6c3SFam Zheng p = filename; 1745f66fd6c3SFam Zheng path[0] = '\0'; 1746f66fd6c3SFam Zheng } 1747f66fd6c3SFam Zheng q = strrchr(p, '.'); 1748f66fd6c3SFam Zheng if (q == NULL) { 1749f66fd6c3SFam Zheng pstrcpy(prefix, buf_len, p); 1750f66fd6c3SFam Zheng postfix[0] = '\0'; 1751f66fd6c3SFam Zheng } else { 1752f66fd6c3SFam Zheng if (q - p >= buf_len) { 175365f74725SFam Zheng return VMDK_ERROR; 1754f66fd6c3SFam Zheng } 1755f66fd6c3SFam Zheng pstrcpy(prefix, q - p + 1, p); 1756f66fd6c3SFam Zheng pstrcpy(postfix, buf_len, q); 1757f66fd6c3SFam Zheng } 175865f74725SFam Zheng return VMDK_OK; 1759f66fd6c3SFam Zheng } 1760f66fd6c3SFam Zheng 17615820f1daSChunyan Liu static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp) 1762f66fd6c3SFam Zheng { 1763917703c1SFam Zheng int idx = 0; 1764917703c1SFam Zheng BlockDriverState *new_bs = NULL; 1765c13959c7SFam Zheng Error *local_err = NULL; 1766af057fe7SFam Zheng char *desc = NULL; 1767f66fd6c3SFam Zheng int64_t total_size = 0, filesize; 17685820f1daSChunyan Liu char *adapter_type = NULL; 17695820f1daSChunyan Liu char *backing_file = NULL; 17705820f1daSChunyan Liu char *fmt = NULL; 1771f66fd6c3SFam Zheng int flags = 0; 1772f66fd6c3SFam Zheng int ret = 0; 17736c031aacSFam Zheng bool flat, split, compress; 1774af057fe7SFam Zheng GString *ext_desc_lines; 1775f66fd6c3SFam Zheng char path[PATH_MAX], prefix[PATH_MAX], postfix[PATH_MAX]; 1776f66fd6c3SFam Zheng const int64_t split_size = 0x80000000; /* VMDK has constant split size */ 1777f66fd6c3SFam Zheng const char *desc_extent_line; 1778f66fd6c3SFam Zheng char parent_desc_line[BUF_SIZE] = ""; 1779f66fd6c3SFam Zheng uint32_t parent_cid = 0xffffffff; 17807f2039f6SOthmar Pasteka uint32_t number_heads = 16; 178169e0b6dfSFam Zheng bool zeroed_grain = false; 1782917703c1SFam Zheng uint32_t desc_offset = 0, desc_len; 1783f66fd6c3SFam Zheng const char desc_template[] = 1784f66fd6c3SFam Zheng "# Disk DescriptorFile\n" 1785f66fd6c3SFam Zheng "version=1\n" 17869b17031aSFam Zheng "CID=%" PRIx32 "\n" 17879b17031aSFam Zheng "parentCID=%" PRIx32 "\n" 1788f66fd6c3SFam Zheng "createType=\"%s\"\n" 1789f66fd6c3SFam Zheng "%s" 1790f66fd6c3SFam Zheng "\n" 1791f66fd6c3SFam Zheng "# Extent description\n" 1792f66fd6c3SFam Zheng "%s" 1793f66fd6c3SFam Zheng "\n" 1794f66fd6c3SFam Zheng "# The Disk Data Base\n" 1795f66fd6c3SFam Zheng "#DDB\n" 1796f66fd6c3SFam Zheng "\n" 1797f66fd6c3SFam Zheng "ddb.virtualHWVersion = \"%d\"\n" 1798f66fd6c3SFam Zheng "ddb.geometry.cylinders = \"%" PRId64 "\"\n" 17994ab9dab5SFam Zheng "ddb.geometry.heads = \"%" PRIu32 "\"\n" 1800f66fd6c3SFam Zheng "ddb.geometry.sectors = \"63\"\n" 18017f2039f6SOthmar Pasteka "ddb.adapterType = \"%s\"\n"; 1802f66fd6c3SFam Zheng 1803af057fe7SFam Zheng ext_desc_lines = g_string_new(NULL); 1804af057fe7SFam Zheng 18054823970bSFam Zheng if (filename_decompose(filename, path, prefix, postfix, PATH_MAX, errp)) { 1806af057fe7SFam Zheng ret = -EINVAL; 1807af057fe7SFam Zheng goto exit; 1808f66fd6c3SFam Zheng } 1809f66fd6c3SFam Zheng /* Read out options */ 18105820f1daSChunyan Liu total_size = qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0); 18115820f1daSChunyan Liu adapter_type = qemu_opt_get_del(opts, BLOCK_OPT_ADAPTER_TYPE); 18125820f1daSChunyan Liu backing_file = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FILE); 18135820f1daSChunyan Liu if (qemu_opt_get_bool_del(opts, BLOCK_OPT_COMPAT6, false)) { 18145820f1daSChunyan Liu flags |= BLOCK_FLAG_COMPAT6; 1815f66fd6c3SFam Zheng } 18165820f1daSChunyan Liu fmt = qemu_opt_get_del(opts, BLOCK_OPT_SUBFMT); 18175820f1daSChunyan Liu if (qemu_opt_get_bool_del(opts, BLOCK_OPT_ZEROED_GRAIN, false)) { 18185820f1daSChunyan Liu zeroed_grain = true; 1819f66fd6c3SFam Zheng } 18205820f1daSChunyan Liu 18217f2039f6SOthmar Pasteka if (!adapter_type) { 18225820f1daSChunyan Liu adapter_type = g_strdup("ide"); 18237f2039f6SOthmar Pasteka } else if (strcmp(adapter_type, "ide") && 18247f2039f6SOthmar Pasteka strcmp(adapter_type, "buslogic") && 18257f2039f6SOthmar Pasteka strcmp(adapter_type, "lsilogic") && 18267f2039f6SOthmar Pasteka strcmp(adapter_type, "legacyESX")) { 18274823970bSFam Zheng error_setg(errp, "Unknown adapter type: '%s'", adapter_type); 1828af057fe7SFam Zheng ret = -EINVAL; 1829af057fe7SFam Zheng goto exit; 18307f2039f6SOthmar Pasteka } 18317f2039f6SOthmar Pasteka if (strcmp(adapter_type, "ide") != 0) { 18327f2039f6SOthmar Pasteka /* that's the number of heads with which vmware operates when 18337f2039f6SOthmar Pasteka creating, exporting, etc. vmdk files with a non-ide adapter type */ 18347f2039f6SOthmar Pasteka number_heads = 255; 18357f2039f6SOthmar Pasteka } 1836f66fd6c3SFam Zheng if (!fmt) { 1837f66fd6c3SFam Zheng /* Default format to monolithicSparse */ 18385820f1daSChunyan Liu fmt = g_strdup("monolithicSparse"); 1839f66fd6c3SFam Zheng } else if (strcmp(fmt, "monolithicFlat") && 1840f66fd6c3SFam Zheng strcmp(fmt, "monolithicSparse") && 1841f66fd6c3SFam Zheng strcmp(fmt, "twoGbMaxExtentSparse") && 18426c031aacSFam Zheng strcmp(fmt, "twoGbMaxExtentFlat") && 18436c031aacSFam Zheng strcmp(fmt, "streamOptimized")) { 18444823970bSFam Zheng error_setg(errp, "Unknown subformat: '%s'", fmt); 1845af057fe7SFam Zheng ret = -EINVAL; 1846af057fe7SFam Zheng goto exit; 1847f66fd6c3SFam Zheng } 1848f66fd6c3SFam Zheng split = !(strcmp(fmt, "twoGbMaxExtentFlat") && 1849f66fd6c3SFam Zheng strcmp(fmt, "twoGbMaxExtentSparse")); 1850f66fd6c3SFam Zheng flat = !(strcmp(fmt, "monolithicFlat") && 1851f66fd6c3SFam Zheng strcmp(fmt, "twoGbMaxExtentFlat")); 18526c031aacSFam Zheng compress = !strcmp(fmt, "streamOptimized"); 1853f66fd6c3SFam Zheng if (flat) { 18544ab9dab5SFam Zheng desc_extent_line = "RW %" PRId64 " FLAT \"%s\" 0\n"; 1855f66fd6c3SFam Zheng } else { 18564ab9dab5SFam Zheng desc_extent_line = "RW %" PRId64 " SPARSE \"%s\"\n"; 1857f66fd6c3SFam Zheng } 1858f66fd6c3SFam Zheng if (flat && backing_file) { 18594823970bSFam Zheng error_setg(errp, "Flat image can't have backing file"); 1860af057fe7SFam Zheng ret = -ENOTSUP; 1861af057fe7SFam Zheng goto exit; 1862f66fd6c3SFam Zheng } 186352c8d629SFam Zheng if (flat && zeroed_grain) { 186452c8d629SFam Zheng error_setg(errp, "Flat image can't enable zeroed grain"); 1865af057fe7SFam Zheng ret = -ENOTSUP; 1866af057fe7SFam Zheng goto exit; 186752c8d629SFam Zheng } 1868f66fd6c3SFam Zheng if (backing_file) { 1869f67503e5SMax Reitz BlockDriverState *bs = NULL; 1870ddf5636dSMax Reitz ret = bdrv_open(&bs, backing_file, NULL, NULL, BDRV_O_NO_BACKING, NULL, 1871ddf5636dSMax Reitz errp); 1872f66fd6c3SFam Zheng if (ret != 0) { 1873af057fe7SFam Zheng goto exit; 1874f66fd6c3SFam Zheng } 1875f66fd6c3SFam Zheng if (strcmp(bs->drv->format_name, "vmdk")) { 18764f6fd349SFam Zheng bdrv_unref(bs); 1877af057fe7SFam Zheng ret = -EINVAL; 1878af057fe7SFam Zheng goto exit; 1879f66fd6c3SFam Zheng } 1880f66fd6c3SFam Zheng parent_cid = vmdk_read_cid(bs, 0); 18814f6fd349SFam Zheng bdrv_unref(bs); 1882f66fd6c3SFam Zheng snprintf(parent_desc_line, sizeof(parent_desc_line), 18838ed610a1SFam Zheng "parentFileNameHint=\"%s\"", backing_file); 1884f66fd6c3SFam Zheng } 1885f66fd6c3SFam Zheng 1886f66fd6c3SFam Zheng /* Create extents */ 1887f66fd6c3SFam Zheng filesize = total_size; 1888f66fd6c3SFam Zheng while (filesize > 0) { 1889f66fd6c3SFam Zheng char desc_line[BUF_SIZE]; 1890f66fd6c3SFam Zheng char ext_filename[PATH_MAX]; 1891f66fd6c3SFam Zheng char desc_filename[PATH_MAX]; 1892f66fd6c3SFam Zheng int64_t size = filesize; 1893f66fd6c3SFam Zheng 1894f66fd6c3SFam Zheng if (split && size > split_size) { 1895f66fd6c3SFam Zheng size = split_size; 1896f66fd6c3SFam Zheng } 1897f66fd6c3SFam Zheng if (split) { 1898f66fd6c3SFam Zheng snprintf(desc_filename, sizeof(desc_filename), "%s-%c%03d%s", 1899f66fd6c3SFam Zheng prefix, flat ? 'f' : 's', ++idx, postfix); 1900f66fd6c3SFam Zheng } else if (flat) { 1901f66fd6c3SFam Zheng snprintf(desc_filename, sizeof(desc_filename), "%s-flat%s", 1902f66fd6c3SFam Zheng prefix, postfix); 1903f66fd6c3SFam Zheng } else { 1904f66fd6c3SFam Zheng snprintf(desc_filename, sizeof(desc_filename), "%s%s", 1905f66fd6c3SFam Zheng prefix, postfix); 1906f66fd6c3SFam Zheng } 1907f66fd6c3SFam Zheng snprintf(ext_filename, sizeof(ext_filename), "%s%s", 1908f66fd6c3SFam Zheng path, desc_filename); 1909f66fd6c3SFam Zheng 191069e0b6dfSFam Zheng if (vmdk_create_extent(ext_filename, size, 19114ab15590SChunyan Liu flat, compress, zeroed_grain, opts, errp)) { 1912af057fe7SFam Zheng ret = -EINVAL; 1913af057fe7SFam Zheng goto exit; 1914f66fd6c3SFam Zheng } 1915f66fd6c3SFam Zheng filesize -= size; 1916f66fd6c3SFam Zheng 1917f66fd6c3SFam Zheng /* Format description line */ 1918f66fd6c3SFam Zheng snprintf(desc_line, sizeof(desc_line), 1919917703c1SFam Zheng desc_extent_line, size / BDRV_SECTOR_SIZE, desc_filename); 1920af057fe7SFam Zheng g_string_append(ext_desc_lines, desc_line); 1921f66fd6c3SFam Zheng } 1922f66fd6c3SFam Zheng /* generate descriptor file */ 1923af057fe7SFam Zheng desc = g_strdup_printf(desc_template, 19249b17031aSFam Zheng (uint32_t)time(NULL), 1925f66fd6c3SFam Zheng parent_cid, 1926f66fd6c3SFam Zheng fmt, 1927f66fd6c3SFam Zheng parent_desc_line, 1928af057fe7SFam Zheng ext_desc_lines->str, 1929f66fd6c3SFam Zheng (flags & BLOCK_FLAG_COMPAT6 ? 6 : 4), 1930917703c1SFam Zheng total_size / 1931917703c1SFam Zheng (int64_t)(63 * number_heads * BDRV_SECTOR_SIZE), 1932af057fe7SFam Zheng number_heads, 19337f2039f6SOthmar Pasteka adapter_type); 1934917703c1SFam Zheng desc_len = strlen(desc); 1935917703c1SFam Zheng /* the descriptor offset = 0x200 */ 1936917703c1SFam Zheng if (!split && !flat) { 1937917703c1SFam Zheng desc_offset = 0x200; 1938f66fd6c3SFam Zheng } else { 1939c282e1fdSChunyan Liu ret = bdrv_create_file(filename, opts, &local_err); 1940917703c1SFam Zheng if (ret < 0) { 1941c13959c7SFam Zheng error_propagate(errp, local_err); 1942af057fe7SFam Zheng goto exit; 1943f66fd6c3SFam Zheng } 1944f66fd6c3SFam Zheng } 19452e40134bSMax Reitz assert(new_bs == NULL); 19462e40134bSMax Reitz ret = bdrv_open(&new_bs, filename, NULL, NULL, 19472e40134bSMax Reitz BDRV_O_RDWR | BDRV_O_PROTOCOL, NULL, &local_err); 1948917703c1SFam Zheng if (ret < 0) { 1949c13959c7SFam Zheng error_propagate(errp, local_err); 1950917703c1SFam Zheng goto exit; 19511640366cSKirill A. Shutemov } 1952917703c1SFam Zheng ret = bdrv_pwrite(new_bs, desc_offset, desc, desc_len); 1953917703c1SFam Zheng if (ret < 0) { 1954917703c1SFam Zheng error_setg_errno(errp, -ret, "Could not write description"); 1955917703c1SFam Zheng goto exit; 1956917703c1SFam Zheng } 1957917703c1SFam Zheng /* bdrv_pwrite write padding zeros to align to sector, we don't need that 1958917703c1SFam Zheng * for description file */ 1959917703c1SFam Zheng if (desc_offset == 0) { 1960917703c1SFam Zheng ret = bdrv_truncate(new_bs, desc_len); 1961917703c1SFam Zheng if (ret < 0) { 196239a611a3SJeff Cody error_setg_errno(errp, -ret, "Could not truncate file"); 1963917703c1SFam Zheng } 1964917703c1SFam Zheng } 1965af057fe7SFam Zheng exit: 1966917703c1SFam Zheng if (new_bs) { 1967917703c1SFam Zheng bdrv_unref(new_bs); 1968917703c1SFam Zheng } 19695820f1daSChunyan Liu g_free(adapter_type); 19705820f1daSChunyan Liu g_free(backing_file); 19715820f1daSChunyan Liu g_free(fmt); 1972af057fe7SFam Zheng g_free(desc); 1973af057fe7SFam Zheng g_string_free(ext_desc_lines, true); 19741640366cSKirill A. Shutemov return ret; 1975019d6b8fSAnthony Liguori } 1976019d6b8fSAnthony Liguori 1977019d6b8fSAnthony Liguori static void vmdk_close(BlockDriverState *bs) 1978019d6b8fSAnthony Liguori { 19792bc3166cSKevin Wolf BDRVVmdkState *s = bs->opaque; 19802bc3166cSKevin Wolf 1981b3976d3cSFam Zheng vmdk_free_extents(bs); 1982f4c129a3SFam Zheng g_free(s->create_type); 19832bc3166cSKevin Wolf 19842bc3166cSKevin Wolf migrate_del_blocker(s->migration_blocker); 19852bc3166cSKevin Wolf error_free(s->migration_blocker); 1986019d6b8fSAnthony Liguori } 1987019d6b8fSAnthony Liguori 19888b94ff85SPaolo Bonzini static coroutine_fn int vmdk_co_flush(BlockDriverState *bs) 1989019d6b8fSAnthony Liguori { 1990333c574dSFam Zheng BDRVVmdkState *s = bs->opaque; 199129cdb251SPaolo Bonzini int i, err; 199229cdb251SPaolo Bonzini int ret = 0; 1993333c574dSFam Zheng 1994333c574dSFam Zheng for (i = 0; i < s->num_extents; i++) { 19958b94ff85SPaolo Bonzini err = bdrv_co_flush(s->extents[i].file); 1996333c574dSFam Zheng if (err < 0) { 1997333c574dSFam Zheng ret = err; 1998333c574dSFam Zheng } 1999333c574dSFam Zheng } 2000333c574dSFam Zheng return ret; 2001019d6b8fSAnthony Liguori } 2002019d6b8fSAnthony Liguori 20034a1d5e1fSFam Zheng static int64_t vmdk_get_allocated_file_size(BlockDriverState *bs) 20044a1d5e1fSFam Zheng { 20054a1d5e1fSFam Zheng int i; 20064a1d5e1fSFam Zheng int64_t ret = 0; 20074a1d5e1fSFam Zheng int64_t r; 20084a1d5e1fSFam Zheng BDRVVmdkState *s = bs->opaque; 20094a1d5e1fSFam Zheng 20104a1d5e1fSFam Zheng ret = bdrv_get_allocated_file_size(bs->file); 20114a1d5e1fSFam Zheng if (ret < 0) { 20124a1d5e1fSFam Zheng return ret; 20134a1d5e1fSFam Zheng } 20144a1d5e1fSFam Zheng for (i = 0; i < s->num_extents; i++) { 20154a1d5e1fSFam Zheng if (s->extents[i].file == bs->file) { 20164a1d5e1fSFam Zheng continue; 20174a1d5e1fSFam Zheng } 20184a1d5e1fSFam Zheng r = bdrv_get_allocated_file_size(s->extents[i].file); 20194a1d5e1fSFam Zheng if (r < 0) { 20204a1d5e1fSFam Zheng return r; 20214a1d5e1fSFam Zheng } 20224a1d5e1fSFam Zheng ret += r; 20234a1d5e1fSFam Zheng } 20244a1d5e1fSFam Zheng return ret; 20254a1d5e1fSFam Zheng } 20260e7e1989SKevin Wolf 2027da7a50f9SFam Zheng static int vmdk_has_zero_init(BlockDriverState *bs) 2028da7a50f9SFam Zheng { 2029da7a50f9SFam Zheng int i; 2030da7a50f9SFam Zheng BDRVVmdkState *s = bs->opaque; 2031da7a50f9SFam Zheng 2032da7a50f9SFam Zheng /* If has a flat extent and its underlying storage doesn't have zero init, 2033da7a50f9SFam Zheng * return 0. */ 2034da7a50f9SFam Zheng for (i = 0; i < s->num_extents; i++) { 2035da7a50f9SFam Zheng if (s->extents[i].flat) { 2036da7a50f9SFam Zheng if (!bdrv_has_zero_init(s->extents[i].file)) { 2037da7a50f9SFam Zheng return 0; 2038da7a50f9SFam Zheng } 2039da7a50f9SFam Zheng } 2040da7a50f9SFam Zheng } 2041da7a50f9SFam Zheng return 1; 2042da7a50f9SFam Zheng } 2043da7a50f9SFam Zheng 2044f4c129a3SFam Zheng static ImageInfo *vmdk_get_extent_info(VmdkExtent *extent) 2045f4c129a3SFam Zheng { 2046f4c129a3SFam Zheng ImageInfo *info = g_new0(ImageInfo, 1); 2047f4c129a3SFam Zheng 2048f4c129a3SFam Zheng *info = (ImageInfo){ 2049f4c129a3SFam Zheng .filename = g_strdup(extent->file->filename), 2050f4c129a3SFam Zheng .format = g_strdup(extent->type), 2051f4c129a3SFam Zheng .virtual_size = extent->sectors * BDRV_SECTOR_SIZE, 2052f4c129a3SFam Zheng .compressed = extent->compressed, 2053f4c129a3SFam Zheng .has_compressed = extent->compressed, 2054f4c129a3SFam Zheng .cluster_size = extent->cluster_sectors * BDRV_SECTOR_SIZE, 2055f4c129a3SFam Zheng .has_cluster_size = !extent->flat, 2056f4c129a3SFam Zheng }; 2057f4c129a3SFam Zheng 2058f4c129a3SFam Zheng return info; 2059f4c129a3SFam Zheng } 2060f4c129a3SFam Zheng 2061f43aa8e1SPeter Lieven static int vmdk_check(BlockDriverState *bs, BdrvCheckResult *result, 2062f43aa8e1SPeter Lieven BdrvCheckMode fix) 2063f43aa8e1SPeter Lieven { 2064f43aa8e1SPeter Lieven BDRVVmdkState *s = bs->opaque; 2065f43aa8e1SPeter Lieven VmdkExtent *extent = NULL; 2066f43aa8e1SPeter Lieven int64_t sector_num = 0; 206757322b78SMarkus Armbruster int64_t total_sectors = bdrv_nb_sectors(bs); 2068f43aa8e1SPeter Lieven int ret; 2069f43aa8e1SPeter Lieven uint64_t cluster_offset; 2070f43aa8e1SPeter Lieven 2071f43aa8e1SPeter Lieven if (fix) { 2072f43aa8e1SPeter Lieven return -ENOTSUP; 2073f43aa8e1SPeter Lieven } 2074f43aa8e1SPeter Lieven 2075f43aa8e1SPeter Lieven for (;;) { 2076f43aa8e1SPeter Lieven if (sector_num >= total_sectors) { 2077f43aa8e1SPeter Lieven return 0; 2078f43aa8e1SPeter Lieven } 2079f43aa8e1SPeter Lieven extent = find_extent(s, sector_num, extent); 2080f43aa8e1SPeter Lieven if (!extent) { 2081f43aa8e1SPeter Lieven fprintf(stderr, 2082f43aa8e1SPeter Lieven "ERROR: could not find extent for sector %" PRId64 "\n", 2083f43aa8e1SPeter Lieven sector_num); 2084f43aa8e1SPeter Lieven break; 2085f43aa8e1SPeter Lieven } 2086f43aa8e1SPeter Lieven ret = get_cluster_offset(bs, extent, NULL, 2087f43aa8e1SPeter Lieven sector_num << BDRV_SECTOR_BITS, 2088c6ac36e1SFam Zheng false, &cluster_offset, 0, 0); 2089f43aa8e1SPeter Lieven if (ret == VMDK_ERROR) { 2090f43aa8e1SPeter Lieven fprintf(stderr, 2091f43aa8e1SPeter Lieven "ERROR: could not get cluster_offset for sector %" 2092f43aa8e1SPeter Lieven PRId64 "\n", sector_num); 2093f43aa8e1SPeter Lieven break; 2094f43aa8e1SPeter Lieven } 2095f43aa8e1SPeter Lieven if (ret == VMDK_OK && cluster_offset >= bdrv_getlength(extent->file)) { 2096f43aa8e1SPeter Lieven fprintf(stderr, 2097f43aa8e1SPeter Lieven "ERROR: cluster offset for sector %" 2098f43aa8e1SPeter Lieven PRId64 " points after EOF\n", sector_num); 2099f43aa8e1SPeter Lieven break; 2100f43aa8e1SPeter Lieven } 2101f43aa8e1SPeter Lieven sector_num += extent->cluster_sectors; 2102f43aa8e1SPeter Lieven } 2103f43aa8e1SPeter Lieven 2104f43aa8e1SPeter Lieven result->corruptions++; 2105f43aa8e1SPeter Lieven return 0; 2106f43aa8e1SPeter Lieven } 2107f43aa8e1SPeter Lieven 2108f4c129a3SFam Zheng static ImageInfoSpecific *vmdk_get_specific_info(BlockDriverState *bs) 2109f4c129a3SFam Zheng { 2110f4c129a3SFam Zheng int i; 2111f4c129a3SFam Zheng BDRVVmdkState *s = bs->opaque; 2112f4c129a3SFam Zheng ImageInfoSpecific *spec_info = g_new0(ImageInfoSpecific, 1); 2113f4c129a3SFam Zheng ImageInfoList **next; 2114f4c129a3SFam Zheng 2115f4c129a3SFam Zheng *spec_info = (ImageInfoSpecific){ 2116f4c129a3SFam Zheng .kind = IMAGE_INFO_SPECIFIC_KIND_VMDK, 2117f4c129a3SFam Zheng { 2118f4c129a3SFam Zheng .vmdk = g_new0(ImageInfoSpecificVmdk, 1), 2119f4c129a3SFam Zheng }, 2120f4c129a3SFam Zheng }; 2121f4c129a3SFam Zheng 2122f4c129a3SFam Zheng *spec_info->vmdk = (ImageInfoSpecificVmdk) { 2123f4c129a3SFam Zheng .create_type = g_strdup(s->create_type), 2124f4c129a3SFam Zheng .cid = s->cid, 2125f4c129a3SFam Zheng .parent_cid = s->parent_cid, 2126f4c129a3SFam Zheng }; 2127f4c129a3SFam Zheng 2128f4c129a3SFam Zheng next = &spec_info->vmdk->extents; 2129f4c129a3SFam Zheng for (i = 0; i < s->num_extents; i++) { 2130f4c129a3SFam Zheng *next = g_new0(ImageInfoList, 1); 2131f4c129a3SFam Zheng (*next)->value = vmdk_get_extent_info(&s->extents[i]); 2132f4c129a3SFam Zheng (*next)->next = NULL; 2133f4c129a3SFam Zheng next = &(*next)->next; 2134f4c129a3SFam Zheng } 2135f4c129a3SFam Zheng 2136f4c129a3SFam Zheng return spec_info; 2137f4c129a3SFam Zheng } 2138f4c129a3SFam Zheng 213974fe188cSFam Zheng static int vmdk_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) 214074fe188cSFam Zheng { 214174fe188cSFam Zheng int i; 214274fe188cSFam Zheng BDRVVmdkState *s = bs->opaque; 214374fe188cSFam Zheng assert(s->num_extents); 214474fe188cSFam Zheng bdi->needs_compressed_writes = s->extents[0].compressed; 214574fe188cSFam Zheng if (!s->extents[0].flat) { 214674fe188cSFam Zheng bdi->cluster_size = s->extents[0].cluster_sectors << BDRV_SECTOR_BITS; 214774fe188cSFam Zheng } 214874fe188cSFam Zheng /* See if we have multiple extents but they have different cases */ 214974fe188cSFam Zheng for (i = 1; i < s->num_extents; i++) { 215074fe188cSFam Zheng if (bdi->needs_compressed_writes != s->extents[i].compressed || 215174fe188cSFam Zheng (bdi->cluster_size && bdi->cluster_size != 215274fe188cSFam Zheng s->extents[i].cluster_sectors << BDRV_SECTOR_BITS)) { 215374fe188cSFam Zheng return -ENOTSUP; 215474fe188cSFam Zheng } 215574fe188cSFam Zheng } 215674fe188cSFam Zheng return 0; 215774fe188cSFam Zheng } 215874fe188cSFam Zheng 2159c75f3bdfSStefan Hajnoczi static void vmdk_detach_aio_context(BlockDriverState *bs) 2160c75f3bdfSStefan Hajnoczi { 2161c75f3bdfSStefan Hajnoczi BDRVVmdkState *s = bs->opaque; 2162c75f3bdfSStefan Hajnoczi int i; 2163c75f3bdfSStefan Hajnoczi 2164c75f3bdfSStefan Hajnoczi for (i = 0; i < s->num_extents; i++) { 2165c75f3bdfSStefan Hajnoczi bdrv_detach_aio_context(s->extents[i].file); 2166c75f3bdfSStefan Hajnoczi } 2167c75f3bdfSStefan Hajnoczi } 2168c75f3bdfSStefan Hajnoczi 2169c75f3bdfSStefan Hajnoczi static void vmdk_attach_aio_context(BlockDriverState *bs, 2170c75f3bdfSStefan Hajnoczi AioContext *new_context) 2171c75f3bdfSStefan Hajnoczi { 2172c75f3bdfSStefan Hajnoczi BDRVVmdkState *s = bs->opaque; 2173c75f3bdfSStefan Hajnoczi int i; 2174c75f3bdfSStefan Hajnoczi 2175c75f3bdfSStefan Hajnoczi for (i = 0; i < s->num_extents; i++) { 2176c75f3bdfSStefan Hajnoczi bdrv_attach_aio_context(s->extents[i].file, new_context); 2177c75f3bdfSStefan Hajnoczi } 2178c75f3bdfSStefan Hajnoczi } 2179c75f3bdfSStefan Hajnoczi 21805820f1daSChunyan Liu static QemuOptsList vmdk_create_opts = { 21815820f1daSChunyan Liu .name = "vmdk-create-opts", 21825820f1daSChunyan Liu .head = QTAILQ_HEAD_INITIALIZER(vmdk_create_opts.head), 21835820f1daSChunyan Liu .desc = { 2184db08adf5SKevin Wolf { 2185db08adf5SKevin Wolf .name = BLOCK_OPT_SIZE, 21865820f1daSChunyan Liu .type = QEMU_OPT_SIZE, 2187db08adf5SKevin Wolf .help = "Virtual disk size" 2188db08adf5SKevin Wolf }, 2189db08adf5SKevin Wolf { 21907f2039f6SOthmar Pasteka .name = BLOCK_OPT_ADAPTER_TYPE, 21915820f1daSChunyan Liu .type = QEMU_OPT_STRING, 21927f2039f6SOthmar Pasteka .help = "Virtual adapter type, can be one of " 21937f2039f6SOthmar Pasteka "ide (default), lsilogic, buslogic or legacyESX" 21947f2039f6SOthmar Pasteka }, 21957f2039f6SOthmar Pasteka { 2196db08adf5SKevin Wolf .name = BLOCK_OPT_BACKING_FILE, 21975820f1daSChunyan Liu .type = QEMU_OPT_STRING, 2198db08adf5SKevin Wolf .help = "File name of a base image" 2199db08adf5SKevin Wolf }, 2200db08adf5SKevin Wolf { 2201db08adf5SKevin Wolf .name = BLOCK_OPT_COMPAT6, 22025820f1daSChunyan Liu .type = QEMU_OPT_BOOL, 22035820f1daSChunyan Liu .help = "VMDK version 6 image", 22045820f1daSChunyan Liu .def_value_str = "off" 2205db08adf5SKevin Wolf }, 2206f66fd6c3SFam Zheng { 2207f66fd6c3SFam Zheng .name = BLOCK_OPT_SUBFMT, 22085820f1daSChunyan Liu .type = QEMU_OPT_STRING, 2209f66fd6c3SFam Zheng .help = 2210f66fd6c3SFam Zheng "VMDK flat extent format, can be one of " 22116c031aacSFam Zheng "{monolithicSparse (default) | monolithicFlat | twoGbMaxExtentSparse | twoGbMaxExtentFlat | streamOptimized} " 2212f66fd6c3SFam Zheng }, 221369e0b6dfSFam Zheng { 221469e0b6dfSFam Zheng .name = BLOCK_OPT_ZEROED_GRAIN, 22155820f1daSChunyan Liu .type = QEMU_OPT_BOOL, 22165820f1daSChunyan Liu .help = "Enable efficient zero writes " 22175820f1daSChunyan Liu "using the zeroed-grain GTE feature" 221869e0b6dfSFam Zheng }, 22195820f1daSChunyan Liu { /* end of list */ } 22205820f1daSChunyan Liu } 22210e7e1989SKevin Wolf }; 22220e7e1989SKevin Wolf 2223019d6b8fSAnthony Liguori static BlockDriver bdrv_vmdk = { 2224019d6b8fSAnthony Liguori .format_name = "vmdk", 2225019d6b8fSAnthony Liguori .instance_size = sizeof(BDRVVmdkState), 2226019d6b8fSAnthony Liguori .bdrv_probe = vmdk_probe, 22276511ef77SKevin Wolf .bdrv_open = vmdk_open, 2228f43aa8e1SPeter Lieven .bdrv_check = vmdk_check, 22293897575fSJeff Cody .bdrv_reopen_prepare = vmdk_reopen_prepare, 22302914caa0SPaolo Bonzini .bdrv_read = vmdk_co_read, 2231e183ef75SPaolo Bonzini .bdrv_write = vmdk_co_write, 2232ba0ad89eSFam Zheng .bdrv_write_compressed = vmdk_write_compressed, 2233cdeaf1f1SFam Zheng .bdrv_co_write_zeroes = vmdk_co_write_zeroes, 2234019d6b8fSAnthony Liguori .bdrv_close = vmdk_close, 2235c282e1fdSChunyan Liu .bdrv_create = vmdk_create, 2236c68b89acSKevin Wolf .bdrv_co_flush_to_disk = vmdk_co_flush, 2237b6b8a333SPaolo Bonzini .bdrv_co_get_block_status = vmdk_co_get_block_status, 22384a1d5e1fSFam Zheng .bdrv_get_allocated_file_size = vmdk_get_allocated_file_size, 2239da7a50f9SFam Zheng .bdrv_has_zero_init = vmdk_has_zero_init, 2240f4c129a3SFam Zheng .bdrv_get_specific_info = vmdk_get_specific_info, 2241d34682cdSKevin Wolf .bdrv_refresh_limits = vmdk_refresh_limits, 224274fe188cSFam Zheng .bdrv_get_info = vmdk_get_info, 2243c75f3bdfSStefan Hajnoczi .bdrv_detach_aio_context = vmdk_detach_aio_context, 2244c75f3bdfSStefan Hajnoczi .bdrv_attach_aio_context = vmdk_attach_aio_context, 22450e7e1989SKevin Wolf 22468ee79e70SKevin Wolf .supports_backing = true, 22475820f1daSChunyan Liu .create_opts = &vmdk_create_opts, 2248019d6b8fSAnthony Liguori }; 2249019d6b8fSAnthony Liguori 2250019d6b8fSAnthony Liguori static void bdrv_vmdk_init(void) 2251019d6b8fSAnthony Liguori { 2252019d6b8fSAnthony Liguori bdrv_register(&bdrv_vmdk); 2253019d6b8fSAnthony Liguori } 2254019d6b8fSAnthony Liguori 2255019d6b8fSAnthony Liguori block_init(bdrv_vmdk_init); 2256