bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Block driver for the VMDK format |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 3 | * |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 4 | * Copyright (c) 2004 Fabrice Bellard |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 5 | * Copyright (c) 2005 Filip Navara |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 6 | * |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 7 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 8 | * of this software and associated documentation files (the "Software"), to deal |
| 9 | * in the Software without restriction, including without limitation the rights |
| 10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 11 | * copies of the Software, and to permit persons to whom the Software is |
| 12 | * furnished to do so, subject to the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice shall be included in |
| 15 | * all copies or substantial portions of the Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 23 | * THE SOFTWARE. |
| 24 | */ |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 25 | |
Peter Maydell | 80c71a2 | 2016-01-18 18:01:42 +0000 | [diff] [blame] | 26 | #include "qemu/osdep.h" |
Markus Armbruster | da34e65 | 2016-03-14 09:01:28 +0100 | [diff] [blame] | 27 | #include "qapi/error.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 28 | #include "block/block_int.h" |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 29 | #include "sysemu/block-backend.h" |
Max Reitz | abc521a | 2019-02-01 20:29:26 +0100 | [diff] [blame] | 30 | #include "qapi/qmp/qdict.h" |
Markus Armbruster | d49b683 | 2015-03-17 18:29:20 +0100 | [diff] [blame] | 31 | #include "qemu/error-report.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 32 | #include "qemu/module.h" |
Markus Armbruster | 922a01a | 2018-02-01 12:18:46 +0100 | [diff] [blame] | 33 | #include "qemu/option.h" |
Paolo Bonzini | 58369e2 | 2016-03-15 17:22:36 +0100 | [diff] [blame] | 34 | #include "qemu/bswap.h" |
Peter Maydell | 5df022c | 2022-02-26 18:07:23 +0000 | [diff] [blame] | 35 | #include "qemu/memalign.h" |
Juan Quintela | 795c40b | 2017-04-06 12:00:28 +0200 | [diff] [blame] | 36 | #include "migration/blocker.h" |
Veronia Bahaa | f348b6d | 2016-03-20 19:16:19 +0200 | [diff] [blame] | 37 | #include "qemu/cutils.h" |
Stefan Weil | 2923d34 | 2011-11-20 12:34:30 +0100 | [diff] [blame] | 38 | #include <zlib.h> |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 39 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 40 | #define VMDK3_MAGIC (('C' << 24) | ('O' << 16) | ('W' << 8) | 'D') |
| 41 | #define VMDK4_MAGIC (('K' << 24) | ('D' << 16) | ('M' << 8) | 'V') |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 42 | #define VMDK4_COMPRESSION_DEFLATE 1 |
Fam Zheng | 95b0aa4 | 2013-05-02 10:25:25 +0800 | [diff] [blame] | 43 | #define VMDK4_FLAG_NL_DETECT (1 << 0) |
Fam Zheng | bb45ded | 2011-08-12 23:19:34 +0800 | [diff] [blame] | 44 | #define VMDK4_FLAG_RGD (1 << 1) |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 45 | /* Zeroed-grain enable bit */ |
| 46 | #define VMDK4_FLAG_ZERO_GRAIN (1 << 2) |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 47 | #define VMDK4_FLAG_COMPRESS (1 << 16) |
| 48 | #define VMDK4_FLAG_MARKER (1 << 17) |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 49 | #define VMDK4_GD_AT_END 0xffffffffffffffffULL |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 50 | |
yuchenlin | a77672e | 2018-03-22 21:33:37 +0800 | [diff] [blame] | 51 | #define VMDK_EXTENT_MAX_SECTORS (1ULL << 32) |
| 52 | |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 53 | #define VMDK_GTE_ZEROED 0x1 |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 54 | |
| 55 | /* VMDK internal error codes */ |
| 56 | #define VMDK_OK 0 |
| 57 | #define VMDK_ERROR (-1) |
| 58 | /* Cluster not allocated */ |
| 59 | #define VMDK_UNALLOC (-2) |
| 60 | #define VMDK_ZEROED (-3) |
| 61 | |
Fam Zheng | 69e0b6d | 2013-05-02 10:25:24 +0800 | [diff] [blame] | 62 | #define BLOCK_OPT_ZEROED_GRAIN "zeroed_grain" |
Thomas Weißschuh | f3d43df | 2021-09-13 15:04:19 +0200 | [diff] [blame] | 63 | #define BLOCK_OPT_TOOLSVERSION "toolsversion" |
Fam Zheng | 69e0b6d | 2013-05-02 10:25:24 +0800 | [diff] [blame] | 64 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 65 | typedef struct { |
| 66 | uint32_t version; |
| 67 | uint32_t flags; |
| 68 | uint32_t disk_sectors; |
| 69 | uint32_t granularity; |
| 70 | uint32_t l1dir_offset; |
| 71 | uint32_t l1dir_size; |
| 72 | uint32_t file_sectors; |
| 73 | uint32_t cylinders; |
| 74 | uint32_t heads; |
| 75 | uint32_t sectors_per_track; |
Fam Zheng | 5d8caa5 | 2013-08-06 15:44:47 +0800 | [diff] [blame] | 76 | } QEMU_PACKED VMDK3Header; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 77 | |
| 78 | typedef struct { |
| 79 | uint32_t version; |
| 80 | uint32_t flags; |
Fam Zheng | e98768d | 2013-08-06 15:44:48 +0800 | [diff] [blame] | 81 | uint64_t capacity; |
| 82 | uint64_t granularity; |
| 83 | uint64_t desc_offset; |
| 84 | uint64_t desc_size; |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 85 | /* Number of GrainTableEntries per GrainTable */ |
| 86 | uint32_t num_gtes_per_gt; |
Fam Zheng | e98768d | 2013-08-06 15:44:48 +0800 | [diff] [blame] | 87 | uint64_t rgd_offset; |
| 88 | uint64_t gd_offset; |
| 89 | uint64_t grain_offset; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 90 | char filler[1]; |
| 91 | char check_bytes[4]; |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 92 | uint16_t compressAlgorithm; |
Stefan Weil | 541dc0d | 2011-08-31 12:38:01 +0200 | [diff] [blame] | 93 | } QEMU_PACKED VMDK4Header; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 94 | |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 95 | typedef struct VMDKSESparseConstHeader { |
| 96 | uint64_t magic; |
| 97 | uint64_t version; |
| 98 | uint64_t capacity; |
| 99 | uint64_t grain_size; |
| 100 | uint64_t grain_table_size; |
| 101 | uint64_t flags; |
| 102 | uint64_t reserved1; |
| 103 | uint64_t reserved2; |
| 104 | uint64_t reserved3; |
| 105 | uint64_t reserved4; |
| 106 | uint64_t volatile_header_offset; |
| 107 | uint64_t volatile_header_size; |
| 108 | uint64_t journal_header_offset; |
| 109 | uint64_t journal_header_size; |
| 110 | uint64_t journal_offset; |
| 111 | uint64_t journal_size; |
| 112 | uint64_t grain_dir_offset; |
| 113 | uint64_t grain_dir_size; |
| 114 | uint64_t grain_tables_offset; |
| 115 | uint64_t grain_tables_size; |
| 116 | uint64_t free_bitmap_offset; |
| 117 | uint64_t free_bitmap_size; |
| 118 | uint64_t backmap_offset; |
| 119 | uint64_t backmap_size; |
| 120 | uint64_t grains_offset; |
| 121 | uint64_t grains_size; |
| 122 | uint8_t pad[304]; |
| 123 | } QEMU_PACKED VMDKSESparseConstHeader; |
| 124 | |
| 125 | typedef struct VMDKSESparseVolatileHeader { |
| 126 | uint64_t magic; |
| 127 | uint64_t free_gt_number; |
| 128 | uint64_t next_txn_seq_number; |
| 129 | uint64_t replay_journal; |
| 130 | uint8_t pad[480]; |
| 131 | } QEMU_PACKED VMDKSESparseVolatileHeader; |
| 132 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 133 | #define L2_CACHE_SIZE 16 |
| 134 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 135 | typedef struct VmdkExtent { |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 136 | BdrvChild *file; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 137 | bool flat; |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 138 | bool compressed; |
| 139 | bool has_marker; |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 140 | bool has_zero_grain; |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 141 | bool sesparse; |
| 142 | uint64_t sesparse_l2_tables_offset; |
| 143 | uint64_t sesparse_clusters_offset; |
| 144 | int32_t entry_size; |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 145 | int version; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 146 | int64_t sectors; |
| 147 | int64_t end_sector; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 148 | int64_t flat_start_offset; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 149 | int64_t l1_table_offset; |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 150 | int64_t l1_backup_table_offset; |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 151 | void *l1_table; |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 152 | uint32_t *l1_backup_table; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 153 | unsigned int l1_size; |
| 154 | uint32_t l1_entry_sectors; |
| 155 | |
| 156 | unsigned int l2_size; |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 157 | void *l2_cache; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 158 | uint32_t l2_cache_offsets[L2_CACHE_SIZE]; |
| 159 | uint32_t l2_cache_counts[L2_CACHE_SIZE]; |
| 160 | |
Fam Zheng | 301c7d3 | 2013-09-23 17:18:29 +0800 | [diff] [blame] | 161 | int64_t cluster_sectors; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 162 | int64_t next_cluster_sector; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 163 | char *type; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 164 | } VmdkExtent; |
| 165 | |
| 166 | typedef struct BDRVVmdkState { |
Paolo Bonzini | 848c66e | 2011-10-20 13:16:21 +0200 | [diff] [blame] | 167 | CoMutex lock; |
Fam Zheng | e98768d | 2013-08-06 15:44:48 +0800 | [diff] [blame] | 168 | uint64_t desc_offset; |
Fam Zheng | 69b4d86 | 2011-07-12 19:56:34 +0800 | [diff] [blame] | 169 | bool cid_updated; |
Fam Zheng | c338b6a | 2013-10-18 13:17:19 +0800 | [diff] [blame] | 170 | bool cid_checked; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 171 | uint32_t cid; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 172 | uint32_t parent_cid; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 173 | int num_extents; |
| 174 | /* Extent array with num_extents entries, ascend ordered by address */ |
| 175 | VmdkExtent *extents; |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 176 | Error *migration_blocker; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 177 | char *create_type; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 178 | } BDRVVmdkState; |
| 179 | |
Hanna Reitz | 6d17e28 | 2022-03-14 17:27:18 +0100 | [diff] [blame] | 180 | typedef struct BDRVVmdkReopenState { |
| 181 | bool *extents_using_bs_file; |
| 182 | } BDRVVmdkReopenState; |
| 183 | |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 184 | typedef struct VmdkMetaData { |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 185 | unsigned int l1_index; |
| 186 | unsigned int l2_index; |
| 187 | unsigned int l2_offset; |
Kevin Wolf | 4dc20e6 | 2020-04-30 15:30:02 +0200 | [diff] [blame] | 188 | bool new_allocation; |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 189 | uint32_t *l2_cache_entry; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 190 | } VmdkMetaData; |
| 191 | |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 192 | typedef struct VmdkGrainMarker { |
| 193 | uint64_t lba; |
| 194 | uint32_t size; |
Philippe Mathieu-Daudé | 880a781 | 2020-03-04 16:38:16 +0100 | [diff] [blame] | 195 | uint8_t data[]; |
Fam Zheng | 5d8caa5 | 2013-08-06 15:44:47 +0800 | [diff] [blame] | 196 | } QEMU_PACKED VmdkGrainMarker; |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 197 | |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 198 | enum { |
| 199 | MARKER_END_OF_STREAM = 0, |
| 200 | MARKER_GRAIN_TABLE = 1, |
| 201 | MARKER_GRAIN_DIRECTORY = 2, |
| 202 | MARKER_FOOTER = 3, |
| 203 | }; |
| 204 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 205 | static int vmdk_probe(const uint8_t *buf, int buf_size, const char *filename) |
| 206 | { |
| 207 | uint32_t magic; |
| 208 | |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 209 | if (buf_size < 4) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 210 | return 0; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 211 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 212 | magic = be32_to_cpu(*(uint32_t *)buf); |
| 213 | if (magic == VMDK3_MAGIC || |
Fam Zheng | 01fc99d | 2011-07-12 19:56:30 +0800 | [diff] [blame] | 214 | magic == VMDK4_MAGIC) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 215 | return 100; |
Fam Zheng | 01fc99d | 2011-07-12 19:56:30 +0800 | [diff] [blame] | 216 | } else { |
| 217 | const char *p = (const char *)buf; |
| 218 | const char *end = p + buf_size; |
| 219 | while (p < end) { |
| 220 | if (*p == '#') { |
| 221 | /* skip comment line */ |
| 222 | while (p < end && *p != '\n') { |
| 223 | p++; |
| 224 | } |
| 225 | p++; |
| 226 | continue; |
| 227 | } |
| 228 | if (*p == ' ') { |
| 229 | while (p < end && *p == ' ') { |
| 230 | p++; |
| 231 | } |
| 232 | /* skip '\r' if windows line endings used. */ |
| 233 | if (p < end && *p == '\r') { |
| 234 | p++; |
| 235 | } |
| 236 | /* only accept blank lines before 'version=' line */ |
| 237 | if (p == end || *p != '\n') { |
| 238 | return 0; |
| 239 | } |
| 240 | p++; |
| 241 | continue; |
| 242 | } |
| 243 | if (end - p >= strlen("version=X\n")) { |
| 244 | if (strncmp("version=1\n", p, strlen("version=1\n")) == 0 || |
Sam Eiderman | b69864e | 2019-03-14 16:14:37 +0200 | [diff] [blame] | 245 | strncmp("version=2\n", p, strlen("version=2\n")) == 0 || |
| 246 | strncmp("version=3\n", p, strlen("version=3\n")) == 0) { |
Fam Zheng | 01fc99d | 2011-07-12 19:56:30 +0800 | [diff] [blame] | 247 | return 100; |
| 248 | } |
| 249 | } |
| 250 | if (end - p >= strlen("version=X\r\n")) { |
| 251 | if (strncmp("version=1\r\n", p, strlen("version=1\r\n")) == 0 || |
Sam Eiderman | b69864e | 2019-03-14 16:14:37 +0200 | [diff] [blame] | 252 | strncmp("version=2\r\n", p, strlen("version=2\r\n")) == 0 || |
| 253 | strncmp("version=3\r\n", p, strlen("version=3\r\n")) == 0) { |
Fam Zheng | 01fc99d | 2011-07-12 19:56:30 +0800 | [diff] [blame] | 254 | return 100; |
| 255 | } |
| 256 | } |
| 257 | return 0; |
| 258 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 259 | return 0; |
Fam Zheng | 01fc99d | 2011-07-12 19:56:30 +0800 | [diff] [blame] | 260 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 261 | } |
| 262 | |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 263 | #define SECTOR_SIZE 512 |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 264 | #define DESC_SIZE (20 * SECTOR_SIZE) /* 20 sectors of 512 bytes each */ |
| 265 | #define BUF_SIZE 4096 |
| 266 | #define HEADER_SIZE 512 /* first sector of 512 bytes */ |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 267 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 268 | static void vmdk_free_extents(BlockDriverState *bs) |
| 269 | { |
| 270 | int i; |
| 271 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | b3c0bfb | 2011-09-19 10:26:42 +0800 | [diff] [blame] | 272 | VmdkExtent *e; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 273 | |
Stefan Hajnoczi | 6bc30f1 | 2023-12-05 13:20:02 -0500 | [diff] [blame] | 274 | bdrv_graph_wrlock(); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 275 | for (i = 0; i < s->num_extents; i++) { |
Fam Zheng | b3c0bfb | 2011-09-19 10:26:42 +0800 | [diff] [blame] | 276 | e = &s->extents[i]; |
| 277 | g_free(e->l1_table); |
| 278 | g_free(e->l2_cache); |
| 279 | g_free(e->l1_backup_table); |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 280 | g_free(e->type); |
Kevin Wolf | 9a4f4c3 | 2015-06-16 14:19:22 +0200 | [diff] [blame] | 281 | if (e->file != bs->file) { |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 282 | bdrv_unref_child(bs, e->file); |
Fam Zheng | b3c0bfb | 2011-09-19 10:26:42 +0800 | [diff] [blame] | 283 | } |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 284 | } |
Stefan Hajnoczi | 6bc30f1 | 2023-12-05 13:20:02 -0500 | [diff] [blame] | 285 | bdrv_graph_wrunlock(); |
Kevin Wolf | 32a8aba | 2023-09-11 11:46:19 +0200 | [diff] [blame] | 286 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 287 | g_free(s->extents); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 288 | } |
| 289 | |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 290 | static void vmdk_free_last_extent(BlockDriverState *bs) |
| 291 | { |
| 292 | BDRVVmdkState *s = bs->opaque; |
| 293 | |
| 294 | if (s->num_extents == 0) { |
| 295 | return; |
| 296 | } |
| 297 | s->num_extents--; |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 298 | s->extents = g_renew(VmdkExtent, s->extents, s->num_extents); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 299 | } |
| 300 | |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 301 | /* Return -ve errno, or 0 on success and write CID into *pcid. */ |
Kevin Wolf | 1f051dc | 2023-10-27 17:53:33 +0200 | [diff] [blame] | 302 | static int GRAPH_RDLOCK |
| 303 | vmdk_read_cid(BlockDriverState *bs, int parent, uint32_t *pcid) |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 304 | { |
Fam Zheng | 5997c21 | 2016-03-08 16:24:35 +0800 | [diff] [blame] | 305 | char *desc; |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 306 | uint32_t cid; |
blueswir1 | 7ccfb2e | 2008-09-14 06:45:34 +0000 | [diff] [blame] | 307 | const char *p_name, *cid_str; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 308 | size_t cid_str_size; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 309 | BDRVVmdkState *s = bs->opaque; |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 310 | int ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 311 | |
Fam Zheng | 5997c21 | 2016-03-08 16:24:35 +0800 | [diff] [blame] | 312 | desc = g_malloc0(DESC_SIZE); |
Alberto Faria | 32cc71d | 2022-06-09 16:27:36 +0100 | [diff] [blame] | 313 | ret = bdrv_pread(bs->file, s->desc_offset, DESC_SIZE, desc, 0); |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 314 | if (ret < 0) { |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 315 | goto out; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 316 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 317 | |
| 318 | if (parent) { |
| 319 | cid_str = "parentCID"; |
| 320 | cid_str_size = sizeof("parentCID"); |
| 321 | } else { |
| 322 | cid_str = "CID"; |
| 323 | cid_str_size = sizeof("CID"); |
| 324 | } |
| 325 | |
Kevin Wolf | 93897b9 | 2011-10-26 12:25:52 +0200 | [diff] [blame] | 326 | desc[DESC_SIZE - 1] = '\0'; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 327 | p_name = strstr(desc, cid_str); |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 328 | if (p_name == NULL) { |
| 329 | ret = -EINVAL; |
| 330 | goto out; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 331 | } |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 332 | p_name += cid_str_size; |
| 333 | if (sscanf(p_name, "%" SCNx32, &cid) != 1) { |
| 334 | ret = -EINVAL; |
| 335 | goto out; |
| 336 | } |
| 337 | *pcid = cid; |
| 338 | ret = 0; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 339 | |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 340 | out: |
Fam Zheng | 5997c21 | 2016-03-08 16:24:35 +0800 | [diff] [blame] | 341 | g_free(desc); |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 342 | return ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 343 | } |
| 344 | |
Paolo Bonzini | 28944f9 | 2023-06-01 13:51:41 +0200 | [diff] [blame] | 345 | static int coroutine_fn GRAPH_RDLOCK |
| 346 | vmdk_write_cid(BlockDriverState *bs, uint32_t cid) |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 347 | { |
Fam Zheng | 965415e | 2016-03-08 16:24:34 +0800 | [diff] [blame] | 348 | char *desc, *tmp_desc; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 349 | char *p_name, *tmp_str; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 350 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | 965415e | 2016-03-08 16:24:34 +0800 | [diff] [blame] | 351 | int ret = 0; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 352 | |
Fam Zheng | 9fb7b35 | 2023-11-24 11:56:54 +0000 | [diff] [blame] | 353 | size_t desc_buf_size; |
| 354 | |
| 355 | if (s->desc_offset == 0) { |
| 356 | desc_buf_size = bdrv_getlength(bs->file->bs); |
| 357 | if (desc_buf_size > 16ULL << 20) { |
| 358 | error_report("VMDK description file too big"); |
| 359 | return -EFBIG; |
| 360 | } |
| 361 | } else { |
| 362 | desc_buf_size = DESC_SIZE; |
| 363 | } |
| 364 | |
| 365 | desc = g_malloc0(desc_buf_size); |
| 366 | tmp_desc = g_malloc0(desc_buf_size); |
| 367 | ret = bdrv_co_pread(bs->file, s->desc_offset, desc_buf_size, desc, 0); |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 368 | if (ret < 0) { |
Fam Zheng | 965415e | 2016-03-08 16:24:34 +0800 | [diff] [blame] | 369 | goto out; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 370 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 371 | |
Fam Zheng | 9fb7b35 | 2023-11-24 11:56:54 +0000 | [diff] [blame] | 372 | desc[desc_buf_size - 1] = '\0'; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 373 | tmp_str = strstr(desc, "parentCID"); |
Kevin Wolf | 93897b9 | 2011-10-26 12:25:52 +0200 | [diff] [blame] | 374 | if (tmp_str == NULL) { |
Fam Zheng | 965415e | 2016-03-08 16:24:34 +0800 | [diff] [blame] | 375 | ret = -EINVAL; |
| 376 | goto out; |
Kevin Wolf | 93897b9 | 2011-10-26 12:25:52 +0200 | [diff] [blame] | 377 | } |
| 378 | |
Fam Zheng | 9fb7b35 | 2023-11-24 11:56:54 +0000 | [diff] [blame] | 379 | pstrcpy(tmp_desc, desc_buf_size, tmp_str); |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 380 | p_name = strstr(desc, "CID"); |
| 381 | if (p_name != NULL) { |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 382 | p_name += sizeof("CID"); |
Fam Zheng | 9fb7b35 | 2023-11-24 11:56:54 +0000 | [diff] [blame] | 383 | snprintf(p_name, desc_buf_size - (p_name - desc), "%" PRIx32 "\n", cid); |
| 384 | pstrcat(desc, desc_buf_size, tmp_desc); |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 385 | } |
| 386 | |
Fam Zheng | 9fb7b35 | 2023-11-24 11:56:54 +0000 | [diff] [blame] | 387 | ret = bdrv_co_pwrite_sync(bs->file, s->desc_offset, desc_buf_size, desc, 0); |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 388 | |
Fam Zheng | 965415e | 2016-03-08 16:24:34 +0800 | [diff] [blame] | 389 | out: |
| 390 | g_free(desc); |
| 391 | g_free(tmp_desc); |
| 392 | return ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 393 | } |
| 394 | |
Kevin Wolf | 004915a | 2023-10-27 17:53:26 +0200 | [diff] [blame] | 395 | static int coroutine_fn GRAPH_RDLOCK vmdk_is_cid_valid(BlockDriverState *bs) |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 396 | { |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 397 | BDRVVmdkState *s = bs->opaque; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 398 | uint32_t cur_pcid; |
| 399 | |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 400 | if (!s->cid_checked && bs->backing) { |
| 401 | BlockDriverState *p_bs = bs->backing->bs; |
| 402 | |
Max Reitz | 439e89f | 2018-07-02 23:07:20 +0200 | [diff] [blame] | 403 | if (strcmp(p_bs->drv->format_name, "vmdk")) { |
| 404 | /* Backing file is not in vmdk format, so it does not have |
| 405 | * a CID, which makes the overlay's parent CID invalid */ |
| 406 | return 0; |
| 407 | } |
| 408 | |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 409 | if (vmdk_read_cid(p_bs, 0, &cur_pcid) != 0) { |
| 410 | /* read failure: report as not valid */ |
| 411 | return 0; |
| 412 | } |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 413 | if (s->parent_cid != cur_pcid) { |
| 414 | /* CID not valid */ |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 415 | return 0; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 416 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 417 | } |
Fam Zheng | c338b6a | 2013-10-18 13:17:19 +0800 | [diff] [blame] | 418 | s->cid_checked = true; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 419 | /* CID valid */ |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 420 | return 1; |
| 421 | } |
| 422 | |
Jeff Cody | 3897575 | 2012-09-20 15:13:30 -0400 | [diff] [blame] | 423 | static int vmdk_reopen_prepare(BDRVReopenState *state, |
| 424 | BlockReopenQueue *queue, Error **errp) |
| 425 | { |
Hanna Reitz | 6d17e28 | 2022-03-14 17:27:18 +0100 | [diff] [blame] | 426 | BDRVVmdkState *s; |
| 427 | BDRVVmdkReopenState *rs; |
| 428 | int i; |
| 429 | |
Kevin Wolf | 1f051dc | 2023-10-27 17:53:33 +0200 | [diff] [blame] | 430 | GLOBAL_STATE_CODE(); |
| 431 | GRAPH_RDLOCK_GUARD_MAINLOOP(); |
| 432 | |
Jeff Cody | 3897575 | 2012-09-20 15:13:30 -0400 | [diff] [blame] | 433 | assert(state != NULL); |
| 434 | assert(state->bs != NULL); |
Hanna Reitz | 6d17e28 | 2022-03-14 17:27:18 +0100 | [diff] [blame] | 435 | assert(state->opaque == NULL); |
| 436 | |
| 437 | s = state->bs->opaque; |
| 438 | |
| 439 | rs = g_new0(BDRVVmdkReopenState, 1); |
| 440 | state->opaque = rs; |
| 441 | |
| 442 | /* |
| 443 | * Check whether there are any extents stored in bs->file; if bs->file |
| 444 | * changes, we will need to update their .file pointers to follow suit |
| 445 | */ |
| 446 | rs->extents_using_bs_file = g_new(bool, s->num_extents); |
| 447 | for (i = 0; i < s->num_extents; i++) { |
| 448 | rs->extents_using_bs_file[i] = s->extents[i].file == state->bs->file; |
| 449 | } |
| 450 | |
Kevin Wolf | 67251a3 | 2015-04-09 18:54:04 +0200 | [diff] [blame] | 451 | return 0; |
Jeff Cody | 3897575 | 2012-09-20 15:13:30 -0400 | [diff] [blame] | 452 | } |
| 453 | |
Hanna Reitz | 6d17e28 | 2022-03-14 17:27:18 +0100 | [diff] [blame] | 454 | static void vmdk_reopen_clean(BDRVReopenState *state) |
| 455 | { |
| 456 | BDRVVmdkReopenState *rs = state->opaque; |
| 457 | |
| 458 | g_free(rs->extents_using_bs_file); |
| 459 | g_free(rs); |
| 460 | state->opaque = NULL; |
| 461 | } |
| 462 | |
| 463 | static void vmdk_reopen_commit(BDRVReopenState *state) |
| 464 | { |
| 465 | BDRVVmdkState *s = state->bs->opaque; |
| 466 | BDRVVmdkReopenState *rs = state->opaque; |
| 467 | int i; |
| 468 | |
Kevin Wolf | 1f051dc | 2023-10-27 17:53:33 +0200 | [diff] [blame] | 469 | GLOBAL_STATE_CODE(); |
| 470 | GRAPH_RDLOCK_GUARD_MAINLOOP(); |
| 471 | |
Hanna Reitz | 6d17e28 | 2022-03-14 17:27:18 +0100 | [diff] [blame] | 472 | for (i = 0; i < s->num_extents; i++) { |
| 473 | if (rs->extents_using_bs_file[i]) { |
| 474 | s->extents[i].file = state->bs->file; |
| 475 | } |
| 476 | } |
| 477 | |
| 478 | vmdk_reopen_clean(state); |
| 479 | } |
| 480 | |
| 481 | static void vmdk_reopen_abort(BDRVReopenState *state) |
| 482 | { |
| 483 | vmdk_reopen_clean(state); |
| 484 | } |
| 485 | |
Kevin Wolf | 1f051dc | 2023-10-27 17:53:33 +0200 | [diff] [blame] | 486 | static int GRAPH_RDLOCK vmdk_parent_open(BlockDriverState *bs) |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 487 | { |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 488 | char *p_name; |
Fam Zheng | 71968db | 2016-03-08 16:24:36 +0800 | [diff] [blame] | 489 | char *desc; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 490 | BDRVVmdkState *s = bs->opaque; |
Paolo Bonzini | 588b65a | 2011-10-20 13:16:19 +0200 | [diff] [blame] | 491 | int ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 492 | |
Fam Zheng | 71968db | 2016-03-08 16:24:36 +0800 | [diff] [blame] | 493 | desc = g_malloc0(DESC_SIZE + 1); |
Alberto Faria | 32cc71d | 2022-06-09 16:27:36 +0100 | [diff] [blame] | 494 | ret = bdrv_pread(bs->file, s->desc_offset, DESC_SIZE, desc, 0); |
Paolo Bonzini | 588b65a | 2011-10-20 13:16:19 +0200 | [diff] [blame] | 495 | if (ret < 0) { |
Fam Zheng | 71968db | 2016-03-08 16:24:36 +0800 | [diff] [blame] | 496 | goto out; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 497 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 498 | |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 499 | p_name = strstr(desc, "parentFileNameHint"); |
| 500 | if (p_name != NULL) { |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 501 | char *end_name; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 502 | |
| 503 | p_name += sizeof("parentFileNameHint") + 1; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 504 | end_name = strchr(p_name, '\"'); |
| 505 | if (end_name == NULL) { |
Fam Zheng | 71968db | 2016-03-08 16:24:36 +0800 | [diff] [blame] | 506 | ret = -EINVAL; |
| 507 | goto out; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 508 | } |
Max Reitz | 998c201 | 2019-02-01 20:29:08 +0100 | [diff] [blame] | 509 | if ((end_name - p_name) > sizeof(bs->auto_backing_file) - 1) { |
Fam Zheng | 71968db | 2016-03-08 16:24:36 +0800 | [diff] [blame] | 510 | ret = -EINVAL; |
| 511 | goto out; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 512 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 513 | |
Max Reitz | 998c201 | 2019-02-01 20:29:08 +0100 | [diff] [blame] | 514 | pstrcpy(bs->auto_backing_file, end_name - p_name + 1, p_name); |
| 515 | pstrcpy(bs->backing_file, sizeof(bs->backing_file), |
| 516 | bs->auto_backing_file); |
Sam Eiderman | 7502be8 | 2019-03-26 21:58:37 +0200 | [diff] [blame] | 517 | pstrcpy(bs->backing_format, sizeof(bs->backing_format), |
| 518 | "vmdk"); |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 519 | } |
| 520 | |
Fam Zheng | 71968db | 2016-03-08 16:24:36 +0800 | [diff] [blame] | 521 | out: |
| 522 | g_free(desc); |
| 523 | return ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 524 | } |
| 525 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 526 | /* Create and append extent to the extent array. Return the added VmdkExtent |
| 527 | * address. return NULL if allocation failed. */ |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 528 | static int vmdk_add_extent(BlockDriverState *bs, |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 529 | BdrvChild *file, bool flat, int64_t sectors, |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 530 | int64_t l1_offset, int64_t l1_backup_offset, |
| 531 | uint32_t l1_size, |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 532 | int l2_size, uint64_t cluster_sectors, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 533 | VmdkExtent **new_extent, |
| 534 | Error **errp) |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 535 | { |
| 536 | VmdkExtent *extent; |
| 537 | BDRVVmdkState *s = bs->opaque; |
Markus Armbruster | 0a156f7 | 2014-08-21 14:36:19 +0200 | [diff] [blame] | 538 | int64_t nb_sectors; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 539 | |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 540 | if (cluster_sectors > 0x200000) { |
| 541 | /* 0x200000 * 512Bytes = 1GB for one cluster is unrealistic */ |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 542 | error_setg(errp, "Invalid granularity, image may be corrupt"); |
| 543 | return -EFBIG; |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 544 | } |
Sam Eiderman | 59d6ee4 | 2019-06-20 12:10:56 +0300 | [diff] [blame] | 545 | if (l1_size > 32 * 1024 * 1024) { |
Sam Eiderman | 940a2cd | 2019-06-20 12:10:55 +0300 | [diff] [blame] | 546 | /* |
| 547 | * Although with big capacity and small l1_entry_sectors, we can get a |
Fam Zheng | b0651b8 | 2013-08-19 18:54:25 +0800 | [diff] [blame] | 548 | * big l1_size, we don't want unbounded value to allocate the table. |
Sam Eiderman | 59d6ee4 | 2019-06-20 12:10:56 +0300 | [diff] [blame] | 549 | * Limit it to 32M, which is enough to store: |
| 550 | * 8TB - for both VMDK3 & VMDK4 with |
| 551 | * minimal cluster size: 512B |
| 552 | * minimal L2 table size: 512 entries |
| 553 | * 8 TB is still more than the maximal value supported for |
| 554 | * VMDK3 & VMDK4 which is 2TB. |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 555 | * 64TB - for "ESXi seSparse Extent" |
| 556 | * minimal cluster size: 512B (default is 4KB) |
| 557 | * L2 table size: 4096 entries (const). |
| 558 | * 64TB is more than the maximal value supported for |
| 559 | * seSparse VMDKs (which is slightly less than 64TB) |
Sam Eiderman | 940a2cd | 2019-06-20 12:10:55 +0300 | [diff] [blame] | 560 | */ |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 561 | error_setg(errp, "L1 size too big"); |
Fam Zheng | b0651b8 | 2013-08-19 18:54:25 +0800 | [diff] [blame] | 562 | return -EFBIG; |
| 563 | } |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 564 | |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 565 | nb_sectors = bdrv_nb_sectors(file->bs); |
Markus Armbruster | 0a156f7 | 2014-08-21 14:36:19 +0200 | [diff] [blame] | 566 | if (nb_sectors < 0) { |
| 567 | return nb_sectors; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 568 | } |
| 569 | |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 570 | s->extents = g_renew(VmdkExtent, s->extents, s->num_extents + 1); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 571 | extent = &s->extents[s->num_extents]; |
| 572 | s->num_extents++; |
| 573 | |
| 574 | memset(extent, 0, sizeof(VmdkExtent)); |
| 575 | extent->file = file; |
| 576 | extent->flat = flat; |
| 577 | extent->sectors = sectors; |
| 578 | extent->l1_table_offset = l1_offset; |
| 579 | extent->l1_backup_table_offset = l1_backup_offset; |
| 580 | extent->l1_size = l1_size; |
| 581 | extent->l1_entry_sectors = l2_size * cluster_sectors; |
| 582 | extent->l2_size = l2_size; |
Fam Zheng | 301c7d3 | 2013-09-23 17:18:29 +0800 | [diff] [blame] | 583 | extent->cluster_sectors = flat ? sectors : cluster_sectors; |
Markus Armbruster | 0a156f7 | 2014-08-21 14:36:19 +0200 | [diff] [blame] | 584 | extent->next_cluster_sector = ROUND_UP(nb_sectors, cluster_sectors); |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 585 | extent->entry_size = sizeof(uint32_t); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 586 | |
| 587 | if (s->num_extents > 1) { |
| 588 | extent->end_sector = (*(extent - 1)).end_sector + extent->sectors; |
| 589 | } else { |
| 590 | extent->end_sector = extent->sectors; |
| 591 | } |
| 592 | bs->total_sectors = extent->end_sector; |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 593 | if (new_extent) { |
| 594 | *new_extent = extent; |
| 595 | } |
| 596 | return 0; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 597 | } |
| 598 | |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 599 | static int GRAPH_RDLOCK |
| 600 | vmdk_init_tables(BlockDriverState *bs, VmdkExtent *extent, Error **errp) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 601 | { |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 602 | int ret; |
Fam Zheng | 13c4941 | 2015-05-05 17:28:13 +0800 | [diff] [blame] | 603 | size_t l1_size; |
| 604 | int i; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 605 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 606 | /* read the L1 table */ |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 607 | l1_size = extent->l1_size * extent->entry_size; |
Kevin Wolf | d6e5993 | 2014-05-20 13:56:27 +0200 | [diff] [blame] | 608 | extent->l1_table = g_try_malloc(l1_size); |
| 609 | if (l1_size && extent->l1_table == NULL) { |
| 610 | return -ENOMEM; |
| 611 | } |
| 612 | |
Alberto Faria | 32cc71d | 2022-06-09 16:27:36 +0100 | [diff] [blame] | 613 | ret = bdrv_pread(extent->file, extent->l1_table_offset, l1_size, |
| 614 | extent->l1_table, 0); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 615 | if (ret < 0) { |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 616 | bdrv_refresh_filename(extent->file->bs); |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 617 | error_setg_errno(errp, -ret, |
| 618 | "Could not read l1 table from extent '%s'", |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 619 | extent->file->bs->filename); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 620 | goto fail_l1; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 621 | } |
| 622 | for (i = 0; i < extent->l1_size; i++) { |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 623 | if (extent->entry_size == sizeof(uint64_t)) { |
| 624 | le64_to_cpus((uint64_t *)extent->l1_table + i); |
| 625 | } else { |
| 626 | assert(extent->entry_size == sizeof(uint32_t)); |
| 627 | le32_to_cpus((uint32_t *)extent->l1_table + i); |
| 628 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 629 | } |
| 630 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 631 | if (extent->l1_backup_table_offset) { |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 632 | assert(!extent->sesparse); |
Kevin Wolf | d6e5993 | 2014-05-20 13:56:27 +0200 | [diff] [blame] | 633 | extent->l1_backup_table = g_try_malloc(l1_size); |
| 634 | if (l1_size && extent->l1_backup_table == NULL) { |
| 635 | ret = -ENOMEM; |
| 636 | goto fail_l1; |
| 637 | } |
Alberto Faria | 53fb784 | 2022-06-09 16:27:35 +0100 | [diff] [blame] | 638 | ret = bdrv_pread(extent->file, extent->l1_backup_table_offset, |
Alberto Faria | 32cc71d | 2022-06-09 16:27:36 +0100 | [diff] [blame] | 639 | l1_size, extent->l1_backup_table, 0); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 640 | if (ret < 0) { |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 641 | bdrv_refresh_filename(extent->file->bs); |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 642 | error_setg_errno(errp, -ret, |
| 643 | "Could not read l1 backup table from extent '%s'", |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 644 | extent->file->bs->filename); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 645 | goto fail_l1b; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 646 | } |
| 647 | for (i = 0; i < extent->l1_size; i++) { |
| 648 | le32_to_cpus(&extent->l1_backup_table[i]); |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 649 | } |
| 650 | } |
| 651 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 652 | extent->l2_cache = |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 653 | g_malloc(extent->entry_size * extent->l2_size * L2_CACHE_SIZE); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 654 | return 0; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 655 | fail_l1b: |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 656 | g_free(extent->l1_backup_table); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 657 | fail_l1: |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 658 | g_free(extent->l1_table); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 659 | return ret; |
| 660 | } |
| 661 | |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 662 | static int GRAPH_RDLOCK |
| 663 | vmdk_open_vmfs_sparse(BlockDriverState *bs, BdrvChild *file, int flags, |
| 664 | Error **errp) |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 665 | { |
| 666 | int ret; |
| 667 | uint32_t magic; |
| 668 | VMDK3Header header; |
Christian Borntraeger | cd46670 | 2020-09-30 17:58:56 +0200 | [diff] [blame] | 669 | VmdkExtent *extent = NULL; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 670 | |
Alberto Faria | 32cc71d | 2022-06-09 16:27:36 +0100 | [diff] [blame] | 671 | ret = bdrv_pread(file, sizeof(magic), sizeof(header), &header, 0); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 672 | if (ret < 0) { |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 673 | bdrv_refresh_filename(file->bs); |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 674 | error_setg_errno(errp, -ret, |
| 675 | "Could not read header from file '%s'", |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 676 | file->bs->filename); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 677 | return ret; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 678 | } |
Fam Zheng | f6b61e5 | 2013-08-19 18:54:26 +0800 | [diff] [blame] | 679 | ret = vmdk_add_extent(bs, file, false, |
| 680 | le32_to_cpu(header.disk_sectors), |
Fam Zheng | 7237aec | 2015-04-27 22:23:01 +0800 | [diff] [blame] | 681 | (int64_t)le32_to_cpu(header.l1dir_offset) << 9, |
Fam Zheng | f6b61e5 | 2013-08-19 18:54:26 +0800 | [diff] [blame] | 682 | 0, |
| 683 | le32_to_cpu(header.l1dir_size), |
| 684 | 4096, |
| 685 | le32_to_cpu(header.granularity), |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 686 | &extent, |
| 687 | errp); |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 688 | if (ret < 0) { |
| 689 | return ret; |
| 690 | } |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 691 | ret = vmdk_init_tables(bs, extent, errp); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 692 | if (ret) { |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 693 | /* free extent allocated by vmdk_add_extent */ |
| 694 | vmdk_free_last_extent(bs); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 695 | } |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 696 | return ret; |
| 697 | } |
| 698 | |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 699 | #define SESPARSE_CONST_HEADER_MAGIC UINT64_C(0x00000000cafebabe) |
| 700 | #define SESPARSE_VOLATILE_HEADER_MAGIC UINT64_C(0x00000000cafecafe) |
| 701 | |
| 702 | /* Strict checks - format not officially documented */ |
| 703 | static int check_se_sparse_const_header(VMDKSESparseConstHeader *header, |
| 704 | Error **errp) |
| 705 | { |
| 706 | header->magic = le64_to_cpu(header->magic); |
| 707 | header->version = le64_to_cpu(header->version); |
| 708 | header->grain_size = le64_to_cpu(header->grain_size); |
| 709 | header->grain_table_size = le64_to_cpu(header->grain_table_size); |
| 710 | header->flags = le64_to_cpu(header->flags); |
| 711 | header->reserved1 = le64_to_cpu(header->reserved1); |
| 712 | header->reserved2 = le64_to_cpu(header->reserved2); |
| 713 | header->reserved3 = le64_to_cpu(header->reserved3); |
| 714 | header->reserved4 = le64_to_cpu(header->reserved4); |
| 715 | |
| 716 | header->volatile_header_offset = |
| 717 | le64_to_cpu(header->volatile_header_offset); |
| 718 | header->volatile_header_size = le64_to_cpu(header->volatile_header_size); |
| 719 | |
| 720 | header->journal_header_offset = le64_to_cpu(header->journal_header_offset); |
| 721 | header->journal_header_size = le64_to_cpu(header->journal_header_size); |
| 722 | |
| 723 | header->journal_offset = le64_to_cpu(header->journal_offset); |
| 724 | header->journal_size = le64_to_cpu(header->journal_size); |
| 725 | |
| 726 | header->grain_dir_offset = le64_to_cpu(header->grain_dir_offset); |
| 727 | header->grain_dir_size = le64_to_cpu(header->grain_dir_size); |
| 728 | |
| 729 | header->grain_tables_offset = le64_to_cpu(header->grain_tables_offset); |
| 730 | header->grain_tables_size = le64_to_cpu(header->grain_tables_size); |
| 731 | |
| 732 | header->free_bitmap_offset = le64_to_cpu(header->free_bitmap_offset); |
| 733 | header->free_bitmap_size = le64_to_cpu(header->free_bitmap_size); |
| 734 | |
| 735 | header->backmap_offset = le64_to_cpu(header->backmap_offset); |
| 736 | header->backmap_size = le64_to_cpu(header->backmap_size); |
| 737 | |
| 738 | header->grains_offset = le64_to_cpu(header->grains_offset); |
| 739 | header->grains_size = le64_to_cpu(header->grains_size); |
| 740 | |
| 741 | if (header->magic != SESPARSE_CONST_HEADER_MAGIC) { |
| 742 | error_setg(errp, "Bad const header magic: 0x%016" PRIx64, |
| 743 | header->magic); |
| 744 | return -EINVAL; |
| 745 | } |
| 746 | |
| 747 | if (header->version != 0x0000000200000001) { |
| 748 | error_setg(errp, "Unsupported version: 0x%016" PRIx64, |
| 749 | header->version); |
| 750 | return -ENOTSUP; |
| 751 | } |
| 752 | |
| 753 | if (header->grain_size != 8) { |
| 754 | error_setg(errp, "Unsupported grain size: %" PRIu64, |
| 755 | header->grain_size); |
| 756 | return -ENOTSUP; |
| 757 | } |
| 758 | |
| 759 | if (header->grain_table_size != 64) { |
| 760 | error_setg(errp, "Unsupported grain table size: %" PRIu64, |
| 761 | header->grain_table_size); |
| 762 | return -ENOTSUP; |
| 763 | } |
| 764 | |
| 765 | if (header->flags != 0) { |
| 766 | error_setg(errp, "Unsupported flags: 0x%016" PRIx64, |
| 767 | header->flags); |
| 768 | return -ENOTSUP; |
| 769 | } |
| 770 | |
| 771 | if (header->reserved1 != 0 || header->reserved2 != 0 || |
| 772 | header->reserved3 != 0 || header->reserved4 != 0) { |
| 773 | error_setg(errp, "Unsupported reserved bits:" |
| 774 | " 0x%016" PRIx64 " 0x%016" PRIx64 |
| 775 | " 0x%016" PRIx64 " 0x%016" PRIx64, |
| 776 | header->reserved1, header->reserved2, |
| 777 | header->reserved3, header->reserved4); |
| 778 | return -ENOTSUP; |
| 779 | } |
| 780 | |
| 781 | /* check that padding is 0 */ |
| 782 | if (!buffer_is_zero(header->pad, sizeof(header->pad))) { |
| 783 | error_setg(errp, "Unsupported non-zero const header padding"); |
| 784 | return -ENOTSUP; |
| 785 | } |
| 786 | |
| 787 | return 0; |
| 788 | } |
| 789 | |
| 790 | static int check_se_sparse_volatile_header(VMDKSESparseVolatileHeader *header, |
| 791 | Error **errp) |
| 792 | { |
| 793 | header->magic = le64_to_cpu(header->magic); |
| 794 | header->free_gt_number = le64_to_cpu(header->free_gt_number); |
| 795 | header->next_txn_seq_number = le64_to_cpu(header->next_txn_seq_number); |
| 796 | header->replay_journal = le64_to_cpu(header->replay_journal); |
| 797 | |
| 798 | if (header->magic != SESPARSE_VOLATILE_HEADER_MAGIC) { |
| 799 | error_setg(errp, "Bad volatile header magic: 0x%016" PRIx64, |
| 800 | header->magic); |
| 801 | return -EINVAL; |
| 802 | } |
| 803 | |
| 804 | if (header->replay_journal) { |
| 805 | error_setg(errp, "Image is dirty, Replaying journal not supported"); |
| 806 | return -ENOTSUP; |
| 807 | } |
| 808 | |
| 809 | /* check that padding is 0 */ |
| 810 | if (!buffer_is_zero(header->pad, sizeof(header->pad))) { |
| 811 | error_setg(errp, "Unsupported non-zero volatile header padding"); |
| 812 | return -ENOTSUP; |
| 813 | } |
| 814 | |
| 815 | return 0; |
| 816 | } |
| 817 | |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 818 | static int GRAPH_RDLOCK |
| 819 | vmdk_open_se_sparse(BlockDriverState *bs, BdrvChild *file, int flags, |
| 820 | Error **errp) |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 821 | { |
| 822 | int ret; |
| 823 | VMDKSESparseConstHeader const_header; |
| 824 | VMDKSESparseVolatileHeader volatile_header; |
Christian Borntraeger | cd46670 | 2020-09-30 17:58:56 +0200 | [diff] [blame] | 825 | VmdkExtent *extent = NULL; |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 826 | |
| 827 | ret = bdrv_apply_auto_read_only(bs, |
| 828 | "No write support for seSparse images available", errp); |
| 829 | if (ret < 0) { |
| 830 | return ret; |
| 831 | } |
| 832 | |
| 833 | assert(sizeof(const_header) == SECTOR_SIZE); |
| 834 | |
Alberto Faria | 32cc71d | 2022-06-09 16:27:36 +0100 | [diff] [blame] | 835 | ret = bdrv_pread(file, 0, sizeof(const_header), &const_header, 0); |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 836 | if (ret < 0) { |
| 837 | bdrv_refresh_filename(file->bs); |
| 838 | error_setg_errno(errp, -ret, |
| 839 | "Could not read const header from file '%s'", |
| 840 | file->bs->filename); |
| 841 | return ret; |
| 842 | } |
| 843 | |
| 844 | /* check const header */ |
| 845 | ret = check_se_sparse_const_header(&const_header, errp); |
| 846 | if (ret < 0) { |
| 847 | return ret; |
| 848 | } |
| 849 | |
| 850 | assert(sizeof(volatile_header) == SECTOR_SIZE); |
| 851 | |
Alberto Faria | 53fb784 | 2022-06-09 16:27:35 +0100 | [diff] [blame] | 852 | ret = bdrv_pread(file, const_header.volatile_header_offset * SECTOR_SIZE, |
Alberto Faria | 32cc71d | 2022-06-09 16:27:36 +0100 | [diff] [blame] | 853 | sizeof(volatile_header), &volatile_header, 0); |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 854 | if (ret < 0) { |
| 855 | bdrv_refresh_filename(file->bs); |
| 856 | error_setg_errno(errp, -ret, |
| 857 | "Could not read volatile header from file '%s'", |
| 858 | file->bs->filename); |
| 859 | return ret; |
| 860 | } |
| 861 | |
| 862 | /* check volatile header */ |
| 863 | ret = check_se_sparse_volatile_header(&volatile_header, errp); |
| 864 | if (ret < 0) { |
| 865 | return ret; |
| 866 | } |
| 867 | |
| 868 | ret = vmdk_add_extent(bs, file, false, |
| 869 | const_header.capacity, |
| 870 | const_header.grain_dir_offset * SECTOR_SIZE, |
| 871 | 0, |
| 872 | const_header.grain_dir_size * |
| 873 | SECTOR_SIZE / sizeof(uint64_t), |
| 874 | const_header.grain_table_size * |
| 875 | SECTOR_SIZE / sizeof(uint64_t), |
| 876 | const_header.grain_size, |
| 877 | &extent, |
| 878 | errp); |
| 879 | if (ret < 0) { |
| 880 | return ret; |
| 881 | } |
| 882 | |
| 883 | extent->sesparse = true; |
| 884 | extent->sesparse_l2_tables_offset = const_header.grain_tables_offset; |
| 885 | extent->sesparse_clusters_offset = const_header.grains_offset; |
| 886 | extent->entry_size = sizeof(uint64_t); |
| 887 | |
| 888 | ret = vmdk_init_tables(bs, extent, errp); |
| 889 | if (ret) { |
| 890 | /* free extent allocated by vmdk_add_extent */ |
| 891 | vmdk_free_last_extent(bs); |
| 892 | } |
| 893 | |
| 894 | return ret; |
| 895 | } |
| 896 | |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 897 | static int vmdk_open_desc_file(BlockDriverState *bs, int flags, char *buf, |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 898 | QDict *options, Error **errp); |
Fam Zheng | f16f509 | 2011-08-12 23:19:33 +0800 | [diff] [blame] | 899 | |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 900 | static char *vmdk_read_desc(BdrvChild *file, uint64_t desc_offset, Error **errp) |
Paolo Bonzini | a8842e6 | 2014-02-17 14:44:02 +0100 | [diff] [blame] | 901 | { |
| 902 | int64_t size; |
| 903 | char *buf; |
| 904 | int ret; |
| 905 | |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 906 | size = bdrv_getlength(file->bs); |
Paolo Bonzini | a8842e6 | 2014-02-17 14:44:02 +0100 | [diff] [blame] | 907 | if (size < 0) { |
| 908 | error_setg_errno(errp, -size, "Could not access file"); |
| 909 | return NULL; |
| 910 | } |
| 911 | |
Fam Zheng | 03c3359 | 2014-12-04 07:28:32 +0800 | [diff] [blame] | 912 | if (size < 4) { |
| 913 | /* Both descriptor file and sparse image must be much larger than 4 |
| 914 | * bytes, also callers of vmdk_read_desc want to compare the first 4 |
| 915 | * bytes with VMDK4_MAGIC, let's error out if less is read. */ |
| 916 | error_setg(errp, "File is too small, not a valid image"); |
| 917 | return NULL; |
| 918 | } |
| 919 | |
Fam Zheng | 73b7bca | 2014-12-04 07:28:31 +0800 | [diff] [blame] | 920 | size = MIN(size, (1 << 20) - 1); /* avoid unbounded allocation */ |
| 921 | buf = g_malloc(size + 1); |
Paolo Bonzini | a8842e6 | 2014-02-17 14:44:02 +0100 | [diff] [blame] | 922 | |
Alberto Faria | 32cc71d | 2022-06-09 16:27:36 +0100 | [diff] [blame] | 923 | ret = bdrv_pread(file, desc_offset, size, buf, 0); |
Paolo Bonzini | a8842e6 | 2014-02-17 14:44:02 +0100 | [diff] [blame] | 924 | if (ret < 0) { |
| 925 | error_setg_errno(errp, -ret, "Could not read from file"); |
| 926 | g_free(buf); |
| 927 | return NULL; |
| 928 | } |
Alberto Faria | 353a5d8 | 2022-06-09 16:27:37 +0100 | [diff] [blame] | 929 | buf[size] = 0; |
Paolo Bonzini | a8842e6 | 2014-02-17 14:44:02 +0100 | [diff] [blame] | 930 | |
| 931 | return buf; |
| 932 | } |
| 933 | |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 934 | static int GRAPH_RDLOCK |
| 935 | vmdk_open_vmdk4(BlockDriverState *bs, BdrvChild *file, int flags, |
| 936 | QDict *options, Error **errp) |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 937 | { |
| 938 | int ret; |
| 939 | uint32_t magic; |
| 940 | uint32_t l1_size, l1_entry_sectors; |
| 941 | VMDK4Header header; |
Christian Borntraeger | cd46670 | 2020-09-30 17:58:56 +0200 | [diff] [blame] | 942 | VmdkExtent *extent = NULL; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 943 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | bb45ded | 2011-08-12 23:19:34 +0800 | [diff] [blame] | 944 | int64_t l1_backup_offset = 0; |
Fam Zheng | 3db1d98 | 2016-01-25 10:26:23 +0800 | [diff] [blame] | 945 | bool compressed; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 946 | |
Alberto Faria | 32cc71d | 2022-06-09 16:27:36 +0100 | [diff] [blame] | 947 | ret = bdrv_pread(file, sizeof(magic), sizeof(header), &header, 0); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 948 | if (ret < 0) { |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 949 | bdrv_refresh_filename(file->bs); |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 950 | error_setg_errno(errp, -ret, |
| 951 | "Could not read header from file '%s'", |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 952 | file->bs->filename); |
Paolo Bonzini | 89ac848 | 2014-02-17 14:44:05 +0100 | [diff] [blame] | 953 | return -EINVAL; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 954 | } |
Stefan Hajnoczi | 5a394b9 | 2013-06-10 11:07:33 +0200 | [diff] [blame] | 955 | if (header.capacity == 0) { |
Fam Zheng | e98768d | 2013-08-06 15:44:48 +0800 | [diff] [blame] | 956 | uint64_t desc_offset = le64_to_cpu(header.desc_offset); |
Stefan Hajnoczi | 5a394b9 | 2013-06-10 11:07:33 +0200 | [diff] [blame] | 957 | if (desc_offset) { |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 958 | char *buf = vmdk_read_desc(file, desc_offset << 9, errp); |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 959 | if (!buf) { |
| 960 | return -EINVAL; |
| 961 | } |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 962 | ret = vmdk_open_desc_file(bs, flags, buf, options, errp); |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 963 | g_free(buf); |
| 964 | return ret; |
Stefan Hajnoczi | 5a394b9 | 2013-06-10 11:07:33 +0200 | [diff] [blame] | 965 | } |
Fam Zheng | f16f509 | 2011-08-12 23:19:33 +0800 | [diff] [blame] | 966 | } |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 967 | |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 968 | if (!s->create_type) { |
| 969 | s->create_type = g_strdup("monolithicSparse"); |
| 970 | } |
| 971 | |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 972 | if (le64_to_cpu(header.gd_offset) == VMDK4_GD_AT_END) { |
| 973 | /* |
| 974 | * The footer takes precedence over the header, so read it in. The |
| 975 | * footer starts at offset -1024 from the end: One sector for the |
| 976 | * footer, and another one for the end-of-stream marker. |
| 977 | */ |
| 978 | struct { |
| 979 | struct { |
| 980 | uint64_t val; |
| 981 | uint32_t size; |
| 982 | uint32_t type; |
| 983 | uint8_t pad[512 - 16]; |
| 984 | } QEMU_PACKED footer_marker; |
| 985 | |
| 986 | uint32_t magic; |
| 987 | VMDK4Header header; |
| 988 | uint8_t pad[512 - 4 - sizeof(VMDK4Header)]; |
| 989 | |
| 990 | struct { |
| 991 | uint64_t val; |
| 992 | uint32_t size; |
| 993 | uint32_t type; |
| 994 | uint8_t pad[512 - 16]; |
| 995 | } QEMU_PACKED eos_marker; |
| 996 | } QEMU_PACKED footer; |
| 997 | |
Alberto Faria | 53fb784 | 2022-06-09 16:27:35 +0100 | [diff] [blame] | 998 | ret = bdrv_pread(file, bs->file->bs->total_sectors * 512 - 1536, |
Alberto Faria | 32cc71d | 2022-06-09 16:27:36 +0100 | [diff] [blame] | 999 | sizeof(footer), &footer, 0); |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 1000 | if (ret < 0) { |
Fam Zheng | d899d2e | 2014-12-04 07:28:34 +0800 | [diff] [blame] | 1001 | error_setg_errno(errp, -ret, "Failed to read footer"); |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 1002 | return ret; |
| 1003 | } |
| 1004 | |
| 1005 | /* Some sanity checks for the footer */ |
| 1006 | if (be32_to_cpu(footer.magic) != VMDK4_MAGIC || |
| 1007 | le32_to_cpu(footer.footer_marker.size) != 0 || |
| 1008 | le32_to_cpu(footer.footer_marker.type) != MARKER_FOOTER || |
| 1009 | le64_to_cpu(footer.eos_marker.val) != 0 || |
| 1010 | le32_to_cpu(footer.eos_marker.size) != 0 || |
| 1011 | le32_to_cpu(footer.eos_marker.type) != MARKER_END_OF_STREAM) |
| 1012 | { |
Fam Zheng | d899d2e | 2014-12-04 07:28:34 +0800 | [diff] [blame] | 1013 | error_setg(errp, "Invalid footer"); |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 1014 | return -EINVAL; |
| 1015 | } |
| 1016 | |
| 1017 | header = footer.header; |
| 1018 | } |
| 1019 | |
Fam Zheng | 3db1d98 | 2016-01-25 10:26:23 +0800 | [diff] [blame] | 1020 | compressed = |
| 1021 | le16_to_cpu(header.compressAlgorithm) == VMDK4_COMPRESSION_DEFLATE; |
Fam Zheng | 509d39a | 2013-11-28 09:48:03 +0800 | [diff] [blame] | 1022 | if (le32_to_cpu(header.version) > 3) { |
Max Reitz | a55448b | 2016-03-16 19:54:33 +0100 | [diff] [blame] | 1023 | error_setg(errp, "Unsupported VMDK version %" PRIu32, |
| 1024 | le32_to_cpu(header.version)); |
Fam Zheng | 96c51eb | 2013-06-13 11:21:29 +0800 | [diff] [blame] | 1025 | return -ENOTSUP; |
Fam Zheng | 3db1d98 | 2016-01-25 10:26:23 +0800 | [diff] [blame] | 1026 | } else if (le32_to_cpu(header.version) == 3 && (flags & BDRV_O_RDWR) && |
| 1027 | !compressed) { |
Fam Zheng | 509d39a | 2013-11-28 09:48:03 +0800 | [diff] [blame] | 1028 | /* VMware KB 2064959 explains that version 3 added support for |
| 1029 | * persistent changed block tracking (CBT), and backup software can |
| 1030 | * read it as version=1 if it doesn't care about the changed area |
| 1031 | * information. So we are safe to enable read only. */ |
| 1032 | error_setg(errp, "VMDK version 3 must be read only"); |
| 1033 | return -EINVAL; |
Fam Zheng | 96c51eb | 2013-06-13 11:21:29 +0800 | [diff] [blame] | 1034 | } |
| 1035 | |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 1036 | if (le32_to_cpu(header.num_gtes_per_gt) > 512) { |
Paolo Bonzini | 89ac848 | 2014-02-17 14:44:05 +0100 | [diff] [blame] | 1037 | error_setg(errp, "L2 table size too big"); |
Fam Zheng | f8ce040 | 2013-08-06 15:44:52 +0800 | [diff] [blame] | 1038 | return -EINVAL; |
| 1039 | } |
| 1040 | |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 1041 | l1_entry_sectors = le32_to_cpu(header.num_gtes_per_gt) |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1042 | * le64_to_cpu(header.granularity); |
Stefan Weil | 75d1234 | 2012-02-25 14:01:42 +0100 | [diff] [blame] | 1043 | if (l1_entry_sectors == 0) { |
Fam Zheng | d899d2e | 2014-12-04 07:28:34 +0800 | [diff] [blame] | 1044 | error_setg(errp, "L1 entry size is invalid"); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 1045 | return -EINVAL; |
| 1046 | } |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1047 | l1_size = (le64_to_cpu(header.capacity) + l1_entry_sectors - 1) |
| 1048 | / l1_entry_sectors; |
Fam Zheng | bb45ded | 2011-08-12 23:19:34 +0800 | [diff] [blame] | 1049 | if (le32_to_cpu(header.flags) & VMDK4_FLAG_RGD) { |
| 1050 | l1_backup_offset = le64_to_cpu(header.rgd_offset) << 9; |
| 1051 | } |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 1052 | if (bdrv_nb_sectors(file->bs) < le64_to_cpu(header.grain_offset)) { |
Fam Zheng | 4ab9dab | 2014-04-17 11:34:37 +0800 | [diff] [blame] | 1053 | error_setg(errp, "File truncated, expecting at least %" PRId64 " bytes", |
| 1054 | (int64_t)(le64_to_cpu(header.grain_offset) |
| 1055 | * BDRV_SECTOR_SIZE)); |
Fam Zheng | 34ceed8 | 2014-01-21 15:07:43 +0800 | [diff] [blame] | 1056 | return -EINVAL; |
| 1057 | } |
| 1058 | |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 1059 | ret = vmdk_add_extent(bs, file, false, |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1060 | le64_to_cpu(header.capacity), |
| 1061 | le64_to_cpu(header.gd_offset) << 9, |
Fam Zheng | bb45ded | 2011-08-12 23:19:34 +0800 | [diff] [blame] | 1062 | l1_backup_offset, |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1063 | l1_size, |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 1064 | le32_to_cpu(header.num_gtes_per_gt), |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 1065 | le64_to_cpu(header.granularity), |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1066 | &extent, |
| 1067 | errp); |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 1068 | if (ret < 0) { |
| 1069 | return ret; |
| 1070 | } |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 1071 | extent->compressed = |
| 1072 | le16_to_cpu(header.compressAlgorithm) == VMDK4_COMPRESSION_DEFLATE; |
Fam Zheng | d8a7b06 | 2014-01-23 15:10:52 +0800 | [diff] [blame] | 1073 | if (extent->compressed) { |
| 1074 | g_free(s->create_type); |
| 1075 | s->create_type = g_strdup("streamOptimized"); |
| 1076 | } |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 1077 | extent->has_marker = le32_to_cpu(header.flags) & VMDK4_FLAG_MARKER; |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1078 | extent->version = le32_to_cpu(header.version); |
| 1079 | extent->has_zero_grain = le32_to_cpu(header.flags) & VMDK4_FLAG_ZERO_GRAIN; |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1080 | ret = vmdk_init_tables(bs, extent, errp); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1081 | if (ret) { |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 1082 | /* free extent allocated by vmdk_add_extent */ |
| 1083 | vmdk_free_last_extent(bs); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1084 | } |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1085 | return ret; |
| 1086 | } |
| 1087 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1088 | /* find an option value out of descriptor file */ |
| 1089 | static int vmdk_parse_description(const char *desc, const char *opt_name, |
| 1090 | char *buf, int buf_size) |
| 1091 | { |
| 1092 | char *opt_pos, *opt_end; |
| 1093 | const char *end = desc + strlen(desc); |
| 1094 | |
| 1095 | opt_pos = strstr(desc, opt_name); |
| 1096 | if (!opt_pos) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1097 | return VMDK_ERROR; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1098 | } |
| 1099 | /* Skip "=\"" following opt_name */ |
| 1100 | opt_pos += strlen(opt_name) + 2; |
| 1101 | if (opt_pos >= end) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1102 | return VMDK_ERROR; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1103 | } |
| 1104 | opt_end = opt_pos; |
| 1105 | while (opt_end < end && *opt_end != '"') { |
| 1106 | opt_end++; |
| 1107 | } |
| 1108 | if (opt_end == end || buf_size < opt_end - opt_pos + 1) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1109 | return VMDK_ERROR; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1110 | } |
| 1111 | pstrcpy(buf, opt_end - opt_pos + 1, opt_pos); |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1112 | return VMDK_OK; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1113 | } |
| 1114 | |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 1115 | /* Open an extent file and append to bs array */ |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1116 | static int GRAPH_RDLOCK |
| 1117 | vmdk_open_sparse(BlockDriverState *bs, BdrvChild *file, int flags, |
| 1118 | char *buf, QDict *options, Error **errp) |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 1119 | { |
| 1120 | uint32_t magic; |
| 1121 | |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 1122 | magic = ldl_be_p(buf); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 1123 | switch (magic) { |
| 1124 | case VMDK3_MAGIC: |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1125 | return vmdk_open_vmfs_sparse(bs, file, flags, errp); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 1126 | case VMDK4_MAGIC: |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 1127 | return vmdk_open_vmdk4(bs, file, flags, options, errp); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 1128 | default: |
Paolo Bonzini | 76abe40 | 2014-02-17 14:44:06 +0100 | [diff] [blame] | 1129 | error_setg(errp, "Image not in VMDK format"); |
| 1130 | return -EINVAL; |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 1131 | } |
| 1132 | } |
| 1133 | |
Markus Armbruster | e493769 | 2015-12-18 16:35:20 +0100 | [diff] [blame] | 1134 | static const char *next_line(const char *s) |
| 1135 | { |
| 1136 | while (*s) { |
| 1137 | if (*s == '\n') { |
| 1138 | return s + 1; |
| 1139 | } |
| 1140 | s++; |
| 1141 | } |
| 1142 | return s; |
| 1143 | } |
| 1144 | |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1145 | static int GRAPH_RDLOCK |
| 1146 | vmdk_parse_extents(const char *desc, BlockDriverState *bs, QDict *options, |
| 1147 | Error **errp) |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1148 | { |
Zhao Liu | 76db0ea | 2024-03-11 11:38:05 +0800 | [diff] [blame] | 1149 | ERRP_GUARD(); |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1150 | int ret; |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 1151 | int matches; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1152 | char access[11]; |
| 1153 | char type[11]; |
| 1154 | char fname[512]; |
Markus Armbruster | d28d737 | 2015-12-18 16:35:21 +0100 | [diff] [blame] | 1155 | const char *p, *np; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1156 | int64_t sectors = 0; |
| 1157 | int64_t flat_offset; |
Max Reitz | cdc0dd2 | 2019-08-15 17:36:33 +0200 | [diff] [blame] | 1158 | char *desc_file_dir = NULL; |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 1159 | char *extent_path; |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 1160 | BdrvChild *extent_file; |
Max Reitz | 8b1869d | 2020-05-13 13:05:35 +0200 | [diff] [blame] | 1161 | BdrvChildRole extent_role; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 1162 | BDRVVmdkState *s = bs->opaque; |
Christian Borntraeger | cd46670 | 2020-09-30 17:58:56 +0200 | [diff] [blame] | 1163 | VmdkExtent *extent = NULL; |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 1164 | char extent_opt_prefix[32]; |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 1165 | Error *local_err = NULL; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1166 | |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1167 | GLOBAL_STATE_CODE(); |
| 1168 | |
Markus Armbruster | e493769 | 2015-12-18 16:35:20 +0100 | [diff] [blame] | 1169 | for (p = desc; *p; p = next_line(p)) { |
Fam Zheng | 8a3e0bc | 2014-12-04 07:28:30 +0800 | [diff] [blame] | 1170 | /* parse extent line in one of below formats: |
| 1171 | * |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1172 | * RW [size in sectors] FLAT "file-name.vmdk" OFFSET |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1173 | * RW [size in sectors] SPARSE "file-name.vmdk" |
Fam Zheng | 8a3e0bc | 2014-12-04 07:28:30 +0800 | [diff] [blame] | 1174 | * RW [size in sectors] VMFS "file-name.vmdk" |
| 1175 | * RW [size in sectors] VMFSSPARSE "file-name.vmdk" |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 1176 | * RW [size in sectors] SESPARSE "file-name.vmdk" |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1177 | */ |
| 1178 | flat_offset = -1; |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 1179 | matches = sscanf(p, "%10s %" SCNd64 " %10s \"%511[^\n\r\"]\" %" SCNd64, |
| 1180 | access, §ors, type, fname, &flat_offset); |
| 1181 | if (matches < 4 || strcmp(access, "RW")) { |
Markus Armbruster | e493769 | 2015-12-18 16:35:20 +0100 | [diff] [blame] | 1182 | continue; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1183 | } else if (!strcmp(type, "FLAT")) { |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 1184 | if (matches != 5 || flat_offset < 0) { |
Markus Armbruster | d28d737 | 2015-12-18 16:35:21 +0100 | [diff] [blame] | 1185 | goto invalid; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1186 | } |
Fam Zheng | dbbcaa8 | 2013-10-18 15:07:33 +0800 | [diff] [blame] | 1187 | } else if (!strcmp(type, "VMFS")) { |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 1188 | if (matches == 4) { |
Fam Zheng | b47053b | 2013-12-09 13:24:36 +0800 | [diff] [blame] | 1189 | flat_offset = 0; |
| 1190 | } else { |
Markus Armbruster | d28d737 | 2015-12-18 16:35:21 +0100 | [diff] [blame] | 1191 | goto invalid; |
Fam Zheng | b47053b | 2013-12-09 13:24:36 +0800 | [diff] [blame] | 1192 | } |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 1193 | } else if (matches != 4) { |
Markus Armbruster | d28d737 | 2015-12-18 16:35:21 +0100 | [diff] [blame] | 1194 | goto invalid; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1195 | } |
| 1196 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1197 | if (sectors <= 0 || |
Fam Zheng | daac8fd | 2013-08-19 18:54:27 +0800 | [diff] [blame] | 1198 | (strcmp(type, "FLAT") && strcmp(type, "SPARSE") && |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 1199 | strcmp(type, "VMFS") && strcmp(type, "VMFSSPARSE") && |
| 1200 | strcmp(type, "SESPARSE")) || |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1201 | (strcmp(access, "RW"))) { |
Markus Armbruster | e493769 | 2015-12-18 16:35:20 +0100 | [diff] [blame] | 1202 | continue; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1203 | } |
| 1204 | |
Max Reitz | cdc0dd2 | 2019-08-15 17:36:33 +0200 | [diff] [blame] | 1205 | if (path_is_absolute(fname)) { |
| 1206 | extent_path = g_strdup(fname); |
| 1207 | } else { |
| 1208 | if (!desc_file_dir) { |
| 1209 | desc_file_dir = bdrv_dirname(bs->file->bs, errp); |
| 1210 | if (!desc_file_dir) { |
| 1211 | bdrv_refresh_filename(bs->file->bs); |
| 1212 | error_prepend(errp, "Cannot use relative paths with VMDK " |
| 1213 | "descriptor file '%s': ", |
| 1214 | bs->file->bs->filename); |
| 1215 | ret = -EINVAL; |
| 1216 | goto out; |
| 1217 | } |
| 1218 | } |
Max Reitz | 5c98415 | 2014-12-03 14:57:22 +0100 | [diff] [blame] | 1219 | |
Max Reitz | cdc0dd2 | 2019-08-15 17:36:33 +0200 | [diff] [blame] | 1220 | extent_path = g_strconcat(desc_file_dir, fname, NULL); |
| 1221 | } |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 1222 | |
| 1223 | ret = snprintf(extent_opt_prefix, 32, "extents.%d", s->num_extents); |
| 1224 | assert(ret < 32); |
| 1225 | |
Max Reitz | 8b1869d | 2020-05-13 13:05:35 +0200 | [diff] [blame] | 1226 | extent_role = BDRV_CHILD_DATA; |
| 1227 | if (strcmp(type, "FLAT") != 0 && strcmp(type, "VMFS") != 0) { |
| 1228 | /* non-flat extents have metadata */ |
| 1229 | extent_role |= BDRV_CHILD_METADATA; |
| 1230 | } |
| 1231 | |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 1232 | extent_file = bdrv_open_child(extent_path, options, extent_opt_prefix, |
Max Reitz | 8b1869d | 2020-05-13 13:05:35 +0200 | [diff] [blame] | 1233 | bs, &child_of_bds, extent_role, false, |
| 1234 | &local_err); |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 1235 | g_free(extent_path); |
Dmitry Frolov | a8d99c0 | 2023-08-31 15:59:27 +0300 | [diff] [blame] | 1236 | if (!extent_file) { |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 1237 | error_propagate(errp, local_err); |
Max Reitz | cdc0dd2 | 2019-08-15 17:36:33 +0200 | [diff] [blame] | 1238 | ret = -EINVAL; |
| 1239 | goto out; |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 1240 | } |
| 1241 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1242 | /* save to extents array */ |
Paolo Bonzini | 04d542c | 2013-08-19 18:54:28 +0800 | [diff] [blame] | 1243 | if (!strcmp(type, "FLAT") || !strcmp(type, "VMFS")) { |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1244 | /* FLAT extent */ |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1245 | |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 1246 | ret = vmdk_add_extent(bs, extent_file, true, sectors, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1247 | 0, 0, 0, 0, 0, &extent, errp); |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 1248 | if (ret < 0) { |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1249 | bdrv_graph_rdunlock_main_loop(); |
Stefan Hajnoczi | 6bc30f1 | 2023-12-05 13:20:02 -0500 | [diff] [blame] | 1250 | bdrv_graph_wrlock(); |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 1251 | bdrv_unref_child(bs, extent_file); |
Stefan Hajnoczi | 6bc30f1 | 2023-12-05 13:20:02 -0500 | [diff] [blame] | 1252 | bdrv_graph_wrunlock(); |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1253 | bdrv_graph_rdlock_main_loop(); |
Max Reitz | cdc0dd2 | 2019-08-15 17:36:33 +0200 | [diff] [blame] | 1254 | goto out; |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 1255 | } |
Fam Zheng | f16f509 | 2011-08-12 23:19:33 +0800 | [diff] [blame] | 1256 | extent->flat_start_offset = flat_offset << 9; |
Fam Zheng | daac8fd | 2013-08-19 18:54:27 +0800 | [diff] [blame] | 1257 | } else if (!strcmp(type, "SPARSE") || !strcmp(type, "VMFSSPARSE")) { |
| 1258 | /* SPARSE extent and VMFSSPARSE extent are both "COWD" sparse file*/ |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 1259 | char *buf = vmdk_read_desc(extent_file, 0, errp); |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 1260 | if (!buf) { |
| 1261 | ret = -EINVAL; |
| 1262 | } else { |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 1263 | ret = vmdk_open_sparse(bs, extent_file, bs->open_flags, buf, |
| 1264 | options, errp); |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 1265 | } |
Stefan Hajnoczi | b6b1d31 | 2014-09-04 21:04:43 +0100 | [diff] [blame] | 1266 | g_free(buf); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 1267 | if (ret) { |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1268 | bdrv_graph_rdunlock_main_loop(); |
Stefan Hajnoczi | 6bc30f1 | 2023-12-05 13:20:02 -0500 | [diff] [blame] | 1269 | bdrv_graph_wrlock(); |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 1270 | bdrv_unref_child(bs, extent_file); |
Stefan Hajnoczi | 6bc30f1 | 2023-12-05 13:20:02 -0500 | [diff] [blame] | 1271 | bdrv_graph_wrunlock(); |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1272 | bdrv_graph_rdlock_main_loop(); |
Max Reitz | cdc0dd2 | 2019-08-15 17:36:33 +0200 | [diff] [blame] | 1273 | goto out; |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 1274 | } |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 1275 | extent = &s->extents[s->num_extents - 1]; |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 1276 | } else if (!strcmp(type, "SESPARSE")) { |
| 1277 | ret = vmdk_open_se_sparse(bs, extent_file, bs->open_flags, errp); |
| 1278 | if (ret) { |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1279 | bdrv_graph_rdunlock_main_loop(); |
Stefan Hajnoczi | 6bc30f1 | 2023-12-05 13:20:02 -0500 | [diff] [blame] | 1280 | bdrv_graph_wrlock(); |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 1281 | bdrv_unref_child(bs, extent_file); |
Stefan Hajnoczi | 6bc30f1 | 2023-12-05 13:20:02 -0500 | [diff] [blame] | 1282 | bdrv_graph_wrunlock(); |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1283 | bdrv_graph_rdlock_main_loop(); |
Max Reitz | cdc0dd2 | 2019-08-15 17:36:33 +0200 | [diff] [blame] | 1284 | goto out; |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 1285 | } |
| 1286 | extent = &s->extents[s->num_extents - 1]; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1287 | } else { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1288 | error_setg(errp, "Unsupported extent type '%s'", type); |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1289 | bdrv_graph_rdunlock_main_loop(); |
Stefan Hajnoczi | 6bc30f1 | 2023-12-05 13:20:02 -0500 | [diff] [blame] | 1290 | bdrv_graph_wrlock(); |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 1291 | bdrv_unref_child(bs, extent_file); |
Stefan Hajnoczi | 6bc30f1 | 2023-12-05 13:20:02 -0500 | [diff] [blame] | 1292 | bdrv_graph_wrunlock(); |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1293 | bdrv_graph_rdlock_main_loop(); |
Max Reitz | cdc0dd2 | 2019-08-15 17:36:33 +0200 | [diff] [blame] | 1294 | ret = -ENOTSUP; |
| 1295 | goto out; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1296 | } |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 1297 | extent->type = g_strdup(type); |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1298 | } |
Max Reitz | cdc0dd2 | 2019-08-15 17:36:33 +0200 | [diff] [blame] | 1299 | |
| 1300 | ret = 0; |
| 1301 | goto out; |
Markus Armbruster | d28d737 | 2015-12-18 16:35:21 +0100 | [diff] [blame] | 1302 | |
| 1303 | invalid: |
| 1304 | np = next_line(p); |
| 1305 | assert(np != p); |
| 1306 | if (np[-1] == '\n') { |
| 1307 | np--; |
| 1308 | } |
| 1309 | error_setg(errp, "Invalid extent line: %.*s", (int)(np - p), p); |
Max Reitz | cdc0dd2 | 2019-08-15 17:36:33 +0200 | [diff] [blame] | 1310 | ret = -EINVAL; |
| 1311 | |
| 1312 | out: |
| 1313 | g_free(desc_file_dir); |
| 1314 | return ret; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1315 | } |
| 1316 | |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 1317 | static int GRAPH_RDLOCK |
| 1318 | vmdk_open_desc_file(BlockDriverState *bs, int flags, char *buf, QDict *options, |
| 1319 | Error **errp) |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1320 | { |
| 1321 | int ret; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1322 | char ct[128]; |
| 1323 | BDRVVmdkState *s = bs->opaque; |
| 1324 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1325 | if (vmdk_parse_description(buf, "createType", ct, sizeof(ct))) { |
Paolo Bonzini | 76abe40 | 2014-02-17 14:44:06 +0100 | [diff] [blame] | 1326 | error_setg(errp, "invalid VMDK image descriptor"); |
| 1327 | ret = -EINVAL; |
Evgeny Budilovsky | 0bed087 | 2013-06-12 14:06:30 +0300 | [diff] [blame] | 1328 | goto exit; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1329 | } |
Fam Zheng | 6398de5 | 2011-08-12 23:19:27 +0800 | [diff] [blame] | 1330 | if (strcmp(ct, "monolithicFlat") && |
Paolo Bonzini | 04d542c | 2013-08-19 18:54:28 +0800 | [diff] [blame] | 1331 | strcmp(ct, "vmfs") && |
Fam Zheng | daac8fd | 2013-08-19 18:54:27 +0800 | [diff] [blame] | 1332 | strcmp(ct, "vmfsSparse") && |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 1333 | strcmp(ct, "seSparse") && |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 1334 | strcmp(ct, "twoGbMaxExtentSparse") && |
Fam Zheng | 6398de5 | 2011-08-12 23:19:27 +0800 | [diff] [blame] | 1335 | strcmp(ct, "twoGbMaxExtentFlat")) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1336 | error_setg(errp, "Unsupported image type '%s'", ct); |
Evgeny Budilovsky | 0bed087 | 2013-06-12 14:06:30 +0300 | [diff] [blame] | 1337 | ret = -ENOTSUP; |
| 1338 | goto exit; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1339 | } |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 1340 | s->create_type = g_strdup(ct); |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1341 | s->desc_offset = 0; |
Max Reitz | cdc0dd2 | 2019-08-15 17:36:33 +0200 | [diff] [blame] | 1342 | ret = vmdk_parse_extents(buf, bs, options, errp); |
Evgeny Budilovsky | 0bed087 | 2013-06-12 14:06:30 +0300 | [diff] [blame] | 1343 | exit: |
Evgeny Budilovsky | 0bed087 | 2013-06-12 14:06:30 +0300 | [diff] [blame] | 1344 | return ret; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1345 | } |
| 1346 | |
Max Reitz | 015a103 | 2013-09-05 14:22:29 +0200 | [diff] [blame] | 1347 | static int vmdk_open(BlockDriverState *bs, QDict *options, int flags, |
| 1348 | Error **errp) |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1349 | { |
Fam Zheng | 9aeecbb | 2014-12-04 07:28:33 +0800 | [diff] [blame] | 1350 | char *buf; |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 1351 | int ret; |
| 1352 | BDRVVmdkState *s = bs->opaque; |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 1353 | uint32_t magic; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1354 | |
Kevin Wolf | 3804e3c | 2023-09-11 11:46:12 +0200 | [diff] [blame] | 1355 | GRAPH_RDLOCK_GUARD_MAINLOOP(); |
| 1356 | |
Vladimir Sementsov-Ogievskiy | 8393078 | 2022-07-26 23:11:21 +0300 | [diff] [blame] | 1357 | ret = bdrv_open_file_child(NULL, options, "file", bs, errp); |
| 1358 | if (ret < 0) { |
| 1359 | return ret; |
Kevin Wolf | 4e4bf5c | 2016-12-16 18:52:37 +0100 | [diff] [blame] | 1360 | } |
| 1361 | |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 1362 | buf = vmdk_read_desc(bs->file, 0, errp); |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 1363 | if (!buf) { |
| 1364 | return -EINVAL; |
| 1365 | } |
| 1366 | |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 1367 | magic = ldl_be_p(buf); |
| 1368 | switch (magic) { |
| 1369 | case VMDK3_MAGIC: |
| 1370 | case VMDK4_MAGIC: |
Kevin Wolf | 9a4f4c3 | 2015-06-16 14:19:22 +0200 | [diff] [blame] | 1371 | ret = vmdk_open_sparse(bs, bs->file, flags, buf, options, |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 1372 | errp); |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 1373 | s->desc_offset = 0x200; |
| 1374 | break; |
| 1375 | default: |
Max Reitz | 8b1869d | 2020-05-13 13:05:35 +0200 | [diff] [blame] | 1376 | /* No data in the descriptor file */ |
| 1377 | bs->file->role &= ~BDRV_CHILD_DATA; |
| 1378 | |
| 1379 | /* Must succeed because we have given up permissions if anything */ |
| 1380 | bdrv_child_refresh_perms(bs, bs->file, &error_abort); |
| 1381 | |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 1382 | ret = vmdk_open_desc_file(bs, flags, buf, options, errp); |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 1383 | break; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1384 | } |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 1385 | if (ret) { |
| 1386 | goto fail; |
| 1387 | } |
| 1388 | |
Paolo Bonzini | bae0a0c | 2011-10-20 13:16:20 +0200 | [diff] [blame] | 1389 | /* try to open parent images, if exist */ |
| 1390 | ret = vmdk_parent_open(bs); |
| 1391 | if (ret) { |
| 1392 | goto fail; |
| 1393 | } |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 1394 | ret = vmdk_read_cid(bs, 0, &s->cid); |
| 1395 | if (ret) { |
| 1396 | goto fail; |
| 1397 | } |
| 1398 | ret = vmdk_read_cid(bs, 1, &s->parent_cid); |
| 1399 | if (ret) { |
| 1400 | goto fail; |
| 1401 | } |
Paolo Bonzini | 848c66e | 2011-10-20 13:16:21 +0200 | [diff] [blame] | 1402 | qemu_co_mutex_init(&s->lock); |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 1403 | |
| 1404 | /* Disable migration when VMDK images are used */ |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1405 | error_setg(&s->migration_blocker, "The vmdk format used by node '%s' " |
| 1406 | "does not support live migration", |
| 1407 | bdrv_get_device_or_node_name(bs)); |
Steve Sistare | e0ee3a8 | 2023-10-25 12:44:26 -0700 | [diff] [blame] | 1408 | ret = migrate_add_blocker_normal(&s->migration_blocker, errp); |
Markus Armbruster | 386f6c0 | 2020-07-07 18:06:10 +0200 | [diff] [blame] | 1409 | if (ret < 0) { |
Ashijeet Acharya | fe44dc9 | 2017-01-16 17:01:53 +0530 | [diff] [blame] | 1410 | goto fail; |
| 1411 | } |
| 1412 | |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 1413 | g_free(buf); |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 1414 | return 0; |
Paolo Bonzini | bae0a0c | 2011-10-20 13:16:20 +0200 | [diff] [blame] | 1415 | |
| 1416 | fail: |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 1417 | g_free(buf); |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 1418 | g_free(s->create_type); |
| 1419 | s->create_type = NULL; |
Paolo Bonzini | bae0a0c | 2011-10-20 13:16:20 +0200 | [diff] [blame] | 1420 | vmdk_free_extents(bs); |
| 1421 | return ret; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1422 | } |
| 1423 | |
Kevin Wolf | d34682c | 2013-12-11 19:26:16 +0100 | [diff] [blame] | 1424 | |
Kevin Wolf | 3baca89 | 2014-07-16 17:48:16 +0200 | [diff] [blame] | 1425 | static void vmdk_refresh_limits(BlockDriverState *bs, Error **errp) |
Kevin Wolf | d34682c | 2013-12-11 19:26:16 +0100 | [diff] [blame] | 1426 | { |
| 1427 | BDRVVmdkState *s = bs->opaque; |
| 1428 | int i; |
| 1429 | |
| 1430 | for (i = 0; i < s->num_extents; i++) { |
| 1431 | if (!s->extents[i].flat) { |
Eric Blake | cf081fc | 2016-06-01 15:10:02 -0600 | [diff] [blame] | 1432 | bs->bl.pwrite_zeroes_alignment = |
| 1433 | MAX(bs->bl.pwrite_zeroes_alignment, |
| 1434 | s->extents[i].cluster_sectors << BDRV_SECTOR_BITS); |
Kevin Wolf | d34682c | 2013-12-11 19:26:16 +0100 | [diff] [blame] | 1435 | } |
| 1436 | } |
Kevin Wolf | d34682c | 2013-12-11 19:26:16 +0100 | [diff] [blame] | 1437 | } |
| 1438 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1439 | /** |
| 1440 | * get_whole_cluster |
| 1441 | * |
| 1442 | * Copy backing file's cluster that covers @sector_num, otherwise write zero, |
Kevin Wolf | 4823cde | 2020-04-30 15:30:04 +0200 | [diff] [blame] | 1443 | * to the cluster at @cluster_sector_num. If @zeroed is true, we're overwriting |
| 1444 | * a zeroed cluster in the current layer and must not copy data from the |
| 1445 | * backing file. |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1446 | * |
| 1447 | * If @skip_start_sector < @skip_end_sector, the relative range |
| 1448 | * [@skip_start_sector, @skip_end_sector) is not copied or written, and leave |
| 1449 | * it for call to write user data in the request. |
| 1450 | */ |
Kevin Wolf | b9b10c3 | 2023-02-03 16:21:50 +0100 | [diff] [blame] | 1451 | static int coroutine_fn GRAPH_RDLOCK |
| 1452 | get_whole_cluster(BlockDriverState *bs, VmdkExtent *extent, |
| 1453 | uint64_t cluster_offset, uint64_t offset, |
| 1454 | uint64_t skip_start_bytes, uint64_t skip_end_bytes, |
| 1455 | bool zeroed) |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1456 | { |
Fam Zheng | bf81507 | 2013-08-06 15:44:54 +0800 | [diff] [blame] | 1457 | int ret = VMDK_OK; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1458 | int64_t cluster_bytes; |
| 1459 | uint8_t *whole_grain; |
Kevin Wolf | 4823cde | 2020-04-30 15:30:04 +0200 | [diff] [blame] | 1460 | bool copy_from_backing; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1461 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1462 | /* For COW, align request sector_num to cluster start */ |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1463 | cluster_bytes = extent->cluster_sectors << BDRV_SECTOR_BITS; |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1464 | offset = QEMU_ALIGN_DOWN(offset, cluster_bytes); |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1465 | whole_grain = qemu_blockalign(bs, cluster_bytes); |
Kevin Wolf | 4823cde | 2020-04-30 15:30:04 +0200 | [diff] [blame] | 1466 | copy_from_backing = bs->backing && !zeroed; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1467 | |
Kevin Wolf | 4823cde | 2020-04-30 15:30:04 +0200 | [diff] [blame] | 1468 | if (!copy_from_backing) { |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1469 | memset(whole_grain, 0, skip_start_bytes); |
| 1470 | memset(whole_grain + skip_end_bytes, 0, cluster_bytes - skip_end_bytes); |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1471 | } |
| 1472 | |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1473 | assert(skip_end_bytes <= cluster_bytes); |
Fam Zheng | 0e69c54 | 2011-07-12 19:56:29 +0800 | [diff] [blame] | 1474 | /* we will be here if it's first write on non-exist grain(cluster). |
| 1475 | * try to read from parent image, if exist */ |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 1476 | if (bs->backing && !vmdk_is_cid_valid(bs)) { |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1477 | ret = VMDK_ERROR; |
| 1478 | goto exit; |
| 1479 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1480 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1481 | /* Read backing data before skip range */ |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1482 | if (skip_start_bytes > 0) { |
Kevin Wolf | 4823cde | 2020-04-30 15:30:04 +0200 | [diff] [blame] | 1483 | if (copy_from_backing) { |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1484 | /* qcow2 emits this on bs->file instead of bs->backing */ |
Paolo Bonzini | 1736239 | 2023-06-01 13:51:45 +0200 | [diff] [blame] | 1485 | BLKDBG_CO_EVENT(extent->file, BLKDBG_COW_READ); |
Alberto Faria | a5c4e5b | 2022-10-13 14:37:10 +0200 | [diff] [blame] | 1486 | ret = bdrv_co_pread(bs->backing, offset, skip_start_bytes, |
| 1487 | whole_grain, 0); |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1488 | if (ret < 0) { |
| 1489 | ret = VMDK_ERROR; |
| 1490 | goto exit; |
| 1491 | } |
Kevin Wolf | c336500 | 2010-04-16 19:28:14 +0200 | [diff] [blame] | 1492 | } |
Paolo Bonzini | 1736239 | 2023-06-01 13:51:45 +0200 | [diff] [blame] | 1493 | BLKDBG_CO_EVENT(extent->file, BLKDBG_COW_WRITE); |
Alberto Faria | a5c4e5b | 2022-10-13 14:37:10 +0200 | [diff] [blame] | 1494 | ret = bdrv_co_pwrite(extent->file, cluster_offset, skip_start_bytes, |
| 1495 | whole_grain, 0); |
Kevin Wolf | c336500 | 2010-04-16 19:28:14 +0200 | [diff] [blame] | 1496 | if (ret < 0) { |
Fam Zheng | bf81507 | 2013-08-06 15:44:54 +0800 | [diff] [blame] | 1497 | ret = VMDK_ERROR; |
| 1498 | goto exit; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1499 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1500 | } |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1501 | /* Read backing data after skip range */ |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1502 | if (skip_end_bytes < cluster_bytes) { |
Kevin Wolf | 4823cde | 2020-04-30 15:30:04 +0200 | [diff] [blame] | 1503 | if (copy_from_backing) { |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1504 | /* qcow2 emits this on bs->file instead of bs->backing */ |
Paolo Bonzini | 1736239 | 2023-06-01 13:51:45 +0200 | [diff] [blame] | 1505 | BLKDBG_CO_EVENT(extent->file, BLKDBG_COW_READ); |
Alberto Faria | a5c4e5b | 2022-10-13 14:37:10 +0200 | [diff] [blame] | 1506 | ret = bdrv_co_pread(bs->backing, offset + skip_end_bytes, |
| 1507 | cluster_bytes - skip_end_bytes, |
| 1508 | whole_grain + skip_end_bytes, 0); |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1509 | if (ret < 0) { |
| 1510 | ret = VMDK_ERROR; |
| 1511 | goto exit; |
| 1512 | } |
| 1513 | } |
Paolo Bonzini | 1736239 | 2023-06-01 13:51:45 +0200 | [diff] [blame] | 1514 | BLKDBG_CO_EVENT(extent->file, BLKDBG_COW_WRITE); |
Alberto Faria | a5c4e5b | 2022-10-13 14:37:10 +0200 | [diff] [blame] | 1515 | ret = bdrv_co_pwrite(extent->file, cluster_offset + skip_end_bytes, |
| 1516 | cluster_bytes - skip_end_bytes, |
| 1517 | whole_grain + skip_end_bytes, 0); |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1518 | if (ret < 0) { |
| 1519 | ret = VMDK_ERROR; |
| 1520 | goto exit; |
| 1521 | } |
| 1522 | } |
| 1523 | |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1524 | ret = VMDK_OK; |
Fam Zheng | bf81507 | 2013-08-06 15:44:54 +0800 | [diff] [blame] | 1525 | exit: |
| 1526 | qemu_vfree(whole_grain); |
| 1527 | return ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1528 | } |
| 1529 | |
Emanuele Giuseppe Esposito | 8809534 | 2023-02-03 16:21:46 +0100 | [diff] [blame] | 1530 | static int coroutine_fn GRAPH_RDLOCK |
| 1531 | vmdk_L2update(VmdkExtent *extent, VmdkMetaData *m_data, uint32_t offset) |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1532 | { |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1533 | offset = cpu_to_le32(offset); |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1534 | /* update L2 table */ |
Paolo Bonzini | 1736239 | 2023-06-01 13:51:45 +0200 | [diff] [blame] | 1535 | BLKDBG_CO_EVENT(extent->file, BLKDBG_L2_UPDATE); |
Alberto Faria | a5c4e5b | 2022-10-13 14:37:10 +0200 | [diff] [blame] | 1536 | if (bdrv_co_pwrite(extent->file, |
| 1537 | ((int64_t)m_data->l2_offset * 512) |
| 1538 | + (m_data->l2_index * sizeof(offset)), |
| 1539 | sizeof(offset), &offset, 0) < 0) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1540 | return VMDK_ERROR; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1541 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1542 | /* update backup L2 table */ |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1543 | if (extent->l1_backup_table_offset != 0) { |
| 1544 | m_data->l2_offset = extent->l1_backup_table[m_data->l1_index]; |
Alberto Faria | a5c4e5b | 2022-10-13 14:37:10 +0200 | [diff] [blame] | 1545 | if (bdrv_co_pwrite(extent->file, |
| 1546 | ((int64_t)m_data->l2_offset * 512) |
| 1547 | + (m_data->l2_index * sizeof(offset)), |
| 1548 | sizeof(offset), &offset, 0) < 0) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1549 | return VMDK_ERROR; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1550 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1551 | } |
Alberto Faria | a5c4e5b | 2022-10-13 14:37:10 +0200 | [diff] [blame] | 1552 | if (bdrv_co_flush(extent->file->bs) < 0) { |
Kevin Wolf | 2758be0 | 2020-04-30 15:30:06 +0200 | [diff] [blame] | 1553 | return VMDK_ERROR; |
| 1554 | } |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1555 | if (m_data->l2_cache_entry) { |
| 1556 | *m_data->l2_cache_entry = offset; |
| 1557 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1558 | |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1559 | return VMDK_OK; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1560 | } |
| 1561 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1562 | /** |
| 1563 | * get_cluster_offset |
| 1564 | * |
| 1565 | * Look up cluster offset in extent file by sector number, and store in |
| 1566 | * @cluster_offset. |
| 1567 | * |
| 1568 | * For flat extents, the start offset as parsed from the description file is |
| 1569 | * returned. |
| 1570 | * |
| 1571 | * For sparse extents, look up in L1, L2 table. If allocate is true, return an |
| 1572 | * offset for a new cluster and update L2 cache. If there is a backing file, |
| 1573 | * COW is done before returning; otherwise, zeroes are written to the allocated |
| 1574 | * cluster. Both COW and zero writing skips the sector range |
| 1575 | * [@skip_start_sector, @skip_end_sector) passed in by caller, because caller |
| 1576 | * has new data to write there. |
| 1577 | * |
| 1578 | * Returns: VMDK_OK if cluster exists and mapped in the image. |
| 1579 | * VMDK_UNALLOC if cluster is not mapped and @allocate is false. |
| 1580 | * VMDK_ERROR if failed. |
| 1581 | */ |
Kevin Wolf | b9b10c3 | 2023-02-03 16:21:50 +0100 | [diff] [blame] | 1582 | static int coroutine_fn GRAPH_RDLOCK |
| 1583 | get_cluster_offset(BlockDriverState *bs, VmdkExtent *extent, |
| 1584 | VmdkMetaData *m_data, uint64_t offset, bool allocate, |
| 1585 | uint64_t *cluster_offset, uint64_t skip_start_bytes, |
| 1586 | uint64_t skip_end_bytes) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1587 | { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1588 | unsigned int l1_index, l2_offset, l2_index; |
| 1589 | int min_index, i, j; |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 1590 | uint32_t min_count; |
| 1591 | void *l2_table; |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1592 | bool zeroed = false; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1593 | int64_t ret; |
Fam Zheng | d1319b0 | 2014-09-23 09:56:21 +0800 | [diff] [blame] | 1594 | int64_t cluster_sector; |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 1595 | unsigned int l2_size_bytes = extent->l2_size * extent->entry_size; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1596 | |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1597 | if (m_data) { |
Kevin Wolf | 4dc20e6 | 2020-04-30 15:30:02 +0200 | [diff] [blame] | 1598 | m_data->new_allocation = false; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1599 | } |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1600 | if (extent->flat) { |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1601 | *cluster_offset = extent->flat_start_offset; |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1602 | return VMDK_OK; |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1603 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1604 | |
Fam Zheng | 6398de5 | 2011-08-12 23:19:27 +0800 | [diff] [blame] | 1605 | offset -= (extent->end_sector - extent->sectors) * SECTOR_SIZE; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1606 | l1_index = (offset >> 9) / extent->l1_entry_sectors; |
| 1607 | if (l1_index >= extent->l1_size) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1608 | return VMDK_ERROR; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1609 | } |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 1610 | if (extent->sesparse) { |
| 1611 | uint64_t l2_offset_u64; |
| 1612 | |
| 1613 | assert(extent->entry_size == sizeof(uint64_t)); |
| 1614 | |
| 1615 | l2_offset_u64 = ((uint64_t *)extent->l1_table)[l1_index]; |
| 1616 | if (l2_offset_u64 == 0) { |
| 1617 | l2_offset = 0; |
| 1618 | } else if ((l2_offset_u64 & 0xffffffff00000000) != 0x1000000000000000) { |
| 1619 | /* |
| 1620 | * Top most nibble is 0x1 if grain table is allocated. |
| 1621 | * strict check - top most 4 bytes must be 0x10000000 since max |
| 1622 | * supported size is 64TB for disk - so no more than 64TB / 16MB |
| 1623 | * grain directories which is smaller than uint32, |
| 1624 | * where 16MB is the only supported default grain table coverage. |
| 1625 | */ |
| 1626 | return VMDK_ERROR; |
| 1627 | } else { |
| 1628 | l2_offset_u64 = l2_offset_u64 & 0x00000000ffffffff; |
| 1629 | l2_offset_u64 = extent->sesparse_l2_tables_offset + |
| 1630 | l2_offset_u64 * l2_size_bytes / SECTOR_SIZE; |
| 1631 | if (l2_offset_u64 > 0x00000000ffffffff) { |
| 1632 | return VMDK_ERROR; |
| 1633 | } |
| 1634 | l2_offset = (unsigned int)(l2_offset_u64); |
| 1635 | } |
| 1636 | } else { |
| 1637 | assert(extent->entry_size == sizeof(uint32_t)); |
| 1638 | l2_offset = ((uint32_t *)extent->l1_table)[l1_index]; |
| 1639 | } |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1640 | if (!l2_offset) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1641 | return VMDK_UNALLOC; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1642 | } |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1643 | for (i = 0; i < L2_CACHE_SIZE; i++) { |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1644 | if (l2_offset == extent->l2_cache_offsets[i]) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1645 | /* increment the hit count */ |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1646 | if (++extent->l2_cache_counts[i] == 0xffffffff) { |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1647 | for (j = 0; j < L2_CACHE_SIZE; j++) { |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1648 | extent->l2_cache_counts[j] >>= 1; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1649 | } |
| 1650 | } |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 1651 | l2_table = (char *)extent->l2_cache + (i * l2_size_bytes); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1652 | goto found; |
| 1653 | } |
| 1654 | } |
| 1655 | /* not found: load a new entry in the least used one */ |
| 1656 | min_index = 0; |
| 1657 | min_count = 0xffffffff; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1658 | for (i = 0; i < L2_CACHE_SIZE; i++) { |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1659 | if (extent->l2_cache_counts[i] < min_count) { |
| 1660 | min_count = extent->l2_cache_counts[i]; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1661 | min_index = i; |
| 1662 | } |
| 1663 | } |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 1664 | l2_table = (char *)extent->l2_cache + (min_index * l2_size_bytes); |
Paolo Bonzini | 1736239 | 2023-06-01 13:51:45 +0200 | [diff] [blame] | 1665 | BLKDBG_CO_EVENT(extent->file, BLKDBG_L2_LOAD); |
Alberto Faria | a5c4e5b | 2022-10-13 14:37:10 +0200 | [diff] [blame] | 1666 | if (bdrv_co_pread(extent->file, |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1667 | (int64_t)l2_offset * 512, |
Alberto Faria | 53fb784 | 2022-06-09 16:27:35 +0100 | [diff] [blame] | 1668 | l2_size_bytes, |
Alberto Faria | a5c4e5b | 2022-10-13 14:37:10 +0200 | [diff] [blame] | 1669 | l2_table, 0 |
Alberto Faria | 353a5d8 | 2022-06-09 16:27:37 +0100 | [diff] [blame] | 1670 | ) < 0) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1671 | return VMDK_ERROR; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1672 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1673 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1674 | extent->l2_cache_offsets[min_index] = l2_offset; |
| 1675 | extent->l2_cache_counts[min_index] = 1; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1676 | found: |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1677 | l2_index = ((offset >> 9) / extent->cluster_sectors) % extent->l2_size; |
Kevin Wolf | 2821c1c | 2020-04-30 15:30:03 +0200 | [diff] [blame] | 1678 | if (m_data) { |
| 1679 | m_data->l1_index = l1_index; |
| 1680 | m_data->l2_index = l2_index; |
| 1681 | m_data->l2_offset = l2_offset; |
| 1682 | m_data->l2_cache_entry = ((uint32_t *)l2_table) + l2_index; |
| 1683 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1684 | |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 1685 | if (extent->sesparse) { |
| 1686 | cluster_sector = le64_to_cpu(((uint64_t *)l2_table)[l2_index]); |
| 1687 | switch (cluster_sector & 0xf000000000000000) { |
| 1688 | case 0x0000000000000000: |
| 1689 | /* unallocated grain */ |
| 1690 | if (cluster_sector != 0) { |
| 1691 | return VMDK_ERROR; |
| 1692 | } |
| 1693 | break; |
| 1694 | case 0x1000000000000000: |
| 1695 | /* scsi-unmapped grain - fallthrough */ |
| 1696 | case 0x2000000000000000: |
| 1697 | /* zero grain */ |
| 1698 | zeroed = true; |
| 1699 | break; |
| 1700 | case 0x3000000000000000: |
| 1701 | /* allocated grain */ |
| 1702 | cluster_sector = (((cluster_sector & 0x0fff000000000000) >> 48) | |
| 1703 | ((cluster_sector & 0x0000ffffffffffff) << 12)); |
| 1704 | cluster_sector = extent->sesparse_clusters_offset + |
| 1705 | cluster_sector * extent->cluster_sectors; |
| 1706 | break; |
| 1707 | default: |
| 1708 | return VMDK_ERROR; |
| 1709 | } |
| 1710 | } else { |
| 1711 | cluster_sector = le32_to_cpu(((uint32_t *)l2_table)[l2_index]); |
| 1712 | |
| 1713 | if (extent->has_zero_grain && cluster_sector == VMDK_GTE_ZEROED) { |
| 1714 | zeroed = true; |
| 1715 | } |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1716 | } |
| 1717 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1718 | if (!cluster_sector || zeroed) { |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1719 | if (!allocate) { |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1720 | return zeroed ? VMDK_ZEROED : VMDK_UNALLOC; |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1721 | } |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 1722 | assert(!extent->sesparse); |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1723 | |
yuchenlin | a77672e | 2018-03-22 21:33:37 +0800 | [diff] [blame] | 1724 | if (extent->next_cluster_sector >= VMDK_EXTENT_MAX_SECTORS) { |
| 1725 | return VMDK_ERROR; |
| 1726 | } |
| 1727 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1728 | cluster_sector = extent->next_cluster_sector; |
| 1729 | extent->next_cluster_sector += extent->cluster_sectors; |
Kevin Wolf | 9949f97 | 2010-04-16 21:07:19 +0200 | [diff] [blame] | 1730 | |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1731 | /* First of all we write grain itself, to avoid race condition |
| 1732 | * that may to corrupt the image. |
| 1733 | * This problem may occur because of insufficient space on host disk |
| 1734 | * or inappropriate VM shutdown. |
| 1735 | */ |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1736 | ret = get_whole_cluster(bs, extent, cluster_sector * BDRV_SECTOR_SIZE, |
Kevin Wolf | 4823cde | 2020-04-30 15:30:04 +0200 | [diff] [blame] | 1737 | offset, skip_start_bytes, skip_end_bytes, |
| 1738 | zeroed); |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1739 | if (ret) { |
| 1740 | return ret; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1741 | } |
Reda Sallahi | 524089b | 2016-07-07 10:42:49 +0200 | [diff] [blame] | 1742 | if (m_data) { |
Kevin Wolf | 4dc20e6 | 2020-04-30 15:30:02 +0200 | [diff] [blame] | 1743 | m_data->new_allocation = true; |
Reda Sallahi | 524089b | 2016-07-07 10:42:49 +0200 | [diff] [blame] | 1744 | } |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 1745 | } |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1746 | *cluster_offset = cluster_sector << BDRV_SECTOR_BITS; |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1747 | return VMDK_OK; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1748 | } |
| 1749 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1750 | static VmdkExtent *find_extent(BDRVVmdkState *s, |
| 1751 | int64_t sector_num, VmdkExtent *start_hint) |
| 1752 | { |
| 1753 | VmdkExtent *extent = start_hint; |
| 1754 | |
| 1755 | if (!extent) { |
| 1756 | extent = &s->extents[0]; |
| 1757 | } |
| 1758 | while (extent < &s->extents[s->num_extents]) { |
| 1759 | if (sector_num < extent->end_sector) { |
| 1760 | return extent; |
| 1761 | } |
| 1762 | extent++; |
| 1763 | } |
| 1764 | return NULL; |
| 1765 | } |
| 1766 | |
Kevin Wolf | a844a2b | 2016-04-25 17:14:48 +0200 | [diff] [blame] | 1767 | static inline uint64_t vmdk_find_offset_in_cluster(VmdkExtent *extent, |
| 1768 | int64_t offset) |
| 1769 | { |
Eduardo Habkost | 9be3859 | 2016-06-13 18:57:58 -0300 | [diff] [blame] | 1770 | uint64_t extent_begin_offset, extent_relative_offset; |
Kevin Wolf | a844a2b | 2016-04-25 17:14:48 +0200 | [diff] [blame] | 1771 | uint64_t cluster_size = extent->cluster_sectors * BDRV_SECTOR_SIZE; |
| 1772 | |
| 1773 | extent_begin_offset = |
| 1774 | (extent->end_sector - extent->sectors) * BDRV_SECTOR_SIZE; |
| 1775 | extent_relative_offset = offset - extent_begin_offset; |
Eduardo Habkost | 9be3859 | 2016-06-13 18:57:58 -0300 | [diff] [blame] | 1776 | return extent_relative_offset % cluster_size; |
Kevin Wolf | a844a2b | 2016-04-25 17:14:48 +0200 | [diff] [blame] | 1777 | } |
| 1778 | |
Kevin Wolf | b9b10c3 | 2023-02-03 16:21:50 +0100 | [diff] [blame] | 1779 | static int coroutine_fn GRAPH_RDLOCK |
| 1780 | vmdk_co_block_status(BlockDriverState *bs, bool want_zero, |
| 1781 | int64_t offset, int64_t bytes, int64_t *pnum, |
| 1782 | int64_t *map, BlockDriverState **file) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1783 | { |
| 1784 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1785 | int64_t index_in_cluster, n, ret; |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1786 | uint64_t cluster_offset; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1787 | VmdkExtent *extent; |
| 1788 | |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1789 | extent = find_extent(s, offset >> BDRV_SECTOR_BITS, NULL); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1790 | if (!extent) { |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1791 | return -EIO; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1792 | } |
Stefan Hajnoczi | f8a2e5e | 2011-11-14 12:44:21 +0000 | [diff] [blame] | 1793 | qemu_co_mutex_lock(&s->lock); |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1794 | ret = get_cluster_offset(bs, extent, NULL, offset, false, &cluster_offset, |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1795 | 0, 0); |
Stefan Hajnoczi | f8a2e5e | 2011-11-14 12:44:21 +0000 | [diff] [blame] | 1796 | qemu_co_mutex_unlock(&s->lock); |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1797 | |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1798 | index_in_cluster = vmdk_find_offset_in_cluster(extent, offset); |
Paolo Bonzini | 4bc74be | 2013-09-04 19:00:30 +0200 | [diff] [blame] | 1799 | switch (ret) { |
| 1800 | case VMDK_ERROR: |
| 1801 | ret = -EIO; |
| 1802 | break; |
| 1803 | case VMDK_UNALLOC: |
| 1804 | ret = 0; |
| 1805 | break; |
| 1806 | case VMDK_ZEROED: |
| 1807 | ret = BDRV_BLOCK_ZERO; |
| 1808 | break; |
| 1809 | case VMDK_OK: |
| 1810 | ret = BDRV_BLOCK_DATA; |
Fam Zheng | e0f100f | 2016-01-26 11:58:59 +0800 | [diff] [blame] | 1811 | if (!extent->compressed) { |
Fam Zheng | d0a18f1 | 2016-01-26 11:58:58 +0800 | [diff] [blame] | 1812 | ret |= BDRV_BLOCK_OFFSET_VALID; |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1813 | *map = cluster_offset + index_in_cluster; |
Max Reitz | 4dd84ac | 2019-07-25 17:55:11 +0200 | [diff] [blame] | 1814 | if (extent->flat) { |
| 1815 | ret |= BDRV_BLOCK_RECURSE; |
| 1816 | } |
Andrey Drobyshev via | 2848289 | 2023-09-08 00:02:25 +0300 | [diff] [blame] | 1817 | } else { |
| 1818 | ret |= BDRV_BLOCK_COMPRESSED; |
Paolo Bonzini | 4bc74be | 2013-09-04 19:00:30 +0200 | [diff] [blame] | 1819 | } |
Fam Zheng | e0f100f | 2016-01-26 11:58:59 +0800 | [diff] [blame] | 1820 | *file = extent->file->bs; |
Paolo Bonzini | 4bc74be | 2013-09-04 19:00:30 +0200 | [diff] [blame] | 1821 | break; |
| 1822 | } |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1823 | |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1824 | n = extent->cluster_sectors * BDRV_SECTOR_SIZE - index_in_cluster; |
| 1825 | *pnum = MIN(n, bytes); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1826 | return ret; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1827 | } |
| 1828 | |
Kevin Wolf | b9b10c3 | 2023-02-03 16:21:50 +0100 | [diff] [blame] | 1829 | static int coroutine_fn GRAPH_RDLOCK |
Paolo Bonzini | b4df990 | 2022-09-22 10:49:18 +0200 | [diff] [blame] | 1830 | vmdk_write_extent(VmdkExtent *extent, int64_t cluster_offset, |
| 1831 | int64_t offset_in_cluster, QEMUIOVector *qiov, |
| 1832 | uint64_t qiov_offset, uint64_t n_bytes, |
| 1833 | uint64_t offset) |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1834 | { |
| 1835 | int ret; |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1836 | VmdkGrainMarker *data = NULL; |
| 1837 | uLongf buf_len; |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1838 | QEMUIOVector local_qiov; |
Fam Zheng | 5e82a31 | 2015-05-06 20:23:46 +0800 | [diff] [blame] | 1839 | int64_t write_offset; |
| 1840 | int64_t write_end_sector; |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1841 | |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1842 | if (extent->compressed) { |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1843 | void *compressed_data; |
| 1844 | |
Max Reitz | bedb8bb | 2019-08-15 17:36:35 +0200 | [diff] [blame] | 1845 | /* Only whole clusters */ |
| 1846 | if (offset_in_cluster || |
| 1847 | n_bytes > (extent->cluster_sectors * SECTOR_SIZE) || |
| 1848 | (n_bytes < (extent->cluster_sectors * SECTOR_SIZE) && |
| 1849 | offset + n_bytes != extent->end_sector * SECTOR_SIZE)) |
| 1850 | { |
| 1851 | ret = -EINVAL; |
| 1852 | goto out; |
| 1853 | } |
| 1854 | |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1855 | if (!extent->has_marker) { |
| 1856 | ret = -EINVAL; |
| 1857 | goto out; |
| 1858 | } |
| 1859 | buf_len = (extent->cluster_sectors << 9) * 2; |
| 1860 | data = g_malloc(buf_len + sizeof(VmdkGrainMarker)); |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1861 | |
| 1862 | compressed_data = g_malloc(n_bytes); |
| 1863 | qemu_iovec_to_buf(qiov, qiov_offset, compressed_data, n_bytes); |
| 1864 | ret = compress(data->data, &buf_len, compressed_data, n_bytes); |
| 1865 | g_free(compressed_data); |
| 1866 | |
| 1867 | if (ret != Z_OK || buf_len == 0) { |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1868 | ret = -EINVAL; |
| 1869 | goto out; |
| 1870 | } |
Fam Zheng | 5e82a31 | 2015-05-06 20:23:46 +0800 | [diff] [blame] | 1871 | |
QingFeng Hao | 4545d4f | 2016-12-16 06:20:40 +0100 | [diff] [blame] | 1872 | data->lba = cpu_to_le64(offset >> BDRV_SECTOR_BITS); |
| 1873 | data->size = cpu_to_le32(buf_len); |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1874 | |
| 1875 | n_bytes = buf_len + sizeof(VmdkGrainMarker); |
Vladimir Sementsov-Ogievskiy | 199d95b | 2019-02-18 17:09:20 +0300 | [diff] [blame] | 1876 | qemu_iovec_init_buf(&local_qiov, data, n_bytes); |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1877 | |
Paolo Bonzini | 1736239 | 2023-06-01 13:51:45 +0200 | [diff] [blame] | 1878 | BLKDBG_CO_EVENT(extent->file, BLKDBG_WRITE_COMPRESSED); |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1879 | } else { |
| 1880 | qemu_iovec_init(&local_qiov, qiov->niov); |
| 1881 | qemu_iovec_concat(&local_qiov, qiov, qiov_offset, n_bytes); |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1882 | |
Paolo Bonzini | 1736239 | 2023-06-01 13:51:45 +0200 | [diff] [blame] | 1883 | BLKDBG_CO_EVENT(extent->file, BLKDBG_WRITE_AIO); |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1884 | } |
| 1885 | |
Max Reitz | 3c36357 | 2017-11-23 03:08:16 +0100 | [diff] [blame] | 1886 | write_offset = cluster_offset + offset_in_cluster; |
Kevin Wolf | a03ef88 | 2016-06-20 21:31:46 +0200 | [diff] [blame] | 1887 | ret = bdrv_co_pwritev(extent->file, write_offset, n_bytes, |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1888 | &local_qiov, 0); |
| 1889 | |
| 1890 | write_end_sector = DIV_ROUND_UP(write_offset + n_bytes, BDRV_SECTOR_SIZE); |
Fam Zheng | 5e82a31 | 2015-05-06 20:23:46 +0800 | [diff] [blame] | 1891 | |
Radoslav Gerganov | 3efffc3 | 2015-09-10 10:53:14 +0300 | [diff] [blame] | 1892 | if (extent->compressed) { |
| 1893 | extent->next_cluster_sector = write_end_sector; |
| 1894 | } else { |
| 1895 | extent->next_cluster_sector = MAX(extent->next_cluster_sector, |
| 1896 | write_end_sector); |
| 1897 | } |
Fam Zheng | 5e82a31 | 2015-05-06 20:23:46 +0800 | [diff] [blame] | 1898 | |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1899 | if (ret < 0) { |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1900 | goto out; |
| 1901 | } |
| 1902 | ret = 0; |
| 1903 | out: |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1904 | g_free(data); |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1905 | if (!extent->compressed) { |
| 1906 | qemu_iovec_destroy(&local_qiov); |
| 1907 | } |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1908 | return ret; |
| 1909 | } |
| 1910 | |
Kevin Wolf | b9b10c3 | 2023-02-03 16:21:50 +0100 | [diff] [blame] | 1911 | static int coroutine_fn GRAPH_RDLOCK |
Paolo Bonzini | b4df990 | 2022-09-22 10:49:18 +0200 | [diff] [blame] | 1912 | vmdk_read_extent(VmdkExtent *extent, int64_t cluster_offset, |
Kevin Wolf | b9b10c3 | 2023-02-03 16:21:50 +0100 | [diff] [blame] | 1913 | int64_t offset_in_cluster, QEMUIOVector *qiov, int bytes) |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1914 | { |
| 1915 | int ret; |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1916 | int cluster_bytes, buf_bytes; |
| 1917 | uint8_t *cluster_buf, *compressed_data; |
| 1918 | uint8_t *uncomp_buf; |
| 1919 | uint32_t data_len; |
| 1920 | VmdkGrainMarker *marker; |
| 1921 | uLongf buf_len; |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1922 | |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1923 | |
| 1924 | if (!extent->compressed) { |
Paolo Bonzini | 1736239 | 2023-06-01 13:51:45 +0200 | [diff] [blame] | 1925 | BLKDBG_CO_EVENT(extent->file, BLKDBG_READ_AIO); |
Kevin Wolf | a03ef88 | 2016-06-20 21:31:46 +0200 | [diff] [blame] | 1926 | ret = bdrv_co_preadv(extent->file, |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1927 | cluster_offset + offset_in_cluster, bytes, |
| 1928 | qiov, 0); |
| 1929 | if (ret < 0) { |
| 1930 | return ret; |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1931 | } |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1932 | return 0; |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1933 | } |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1934 | cluster_bytes = extent->cluster_sectors * 512; |
| 1935 | /* Read two clusters in case GrainMarker + compressed data > one cluster */ |
| 1936 | buf_bytes = cluster_bytes * 2; |
| 1937 | cluster_buf = g_malloc(buf_bytes); |
| 1938 | uncomp_buf = g_malloc(cluster_bytes); |
Paolo Bonzini | 1736239 | 2023-06-01 13:51:45 +0200 | [diff] [blame] | 1939 | BLKDBG_CO_EVENT(extent->file, BLKDBG_READ_COMPRESSED); |
Alberto Faria | a5c4e5b | 2022-10-13 14:37:10 +0200 | [diff] [blame] | 1940 | ret = bdrv_co_pread(extent->file, cluster_offset, buf_bytes, cluster_buf, |
| 1941 | 0); |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1942 | if (ret < 0) { |
| 1943 | goto out; |
| 1944 | } |
| 1945 | compressed_data = cluster_buf; |
| 1946 | buf_len = cluster_bytes; |
| 1947 | data_len = cluster_bytes; |
| 1948 | if (extent->has_marker) { |
| 1949 | marker = (VmdkGrainMarker *)cluster_buf; |
| 1950 | compressed_data = marker->data; |
| 1951 | data_len = le32_to_cpu(marker->size); |
| 1952 | } |
| 1953 | if (!data_len || data_len > buf_bytes) { |
| 1954 | ret = -EINVAL; |
| 1955 | goto out; |
| 1956 | } |
| 1957 | ret = uncompress(uncomp_buf, &buf_len, compressed_data, data_len); |
| 1958 | if (ret != Z_OK) { |
| 1959 | ret = -EINVAL; |
| 1960 | goto out; |
| 1961 | |
| 1962 | } |
| 1963 | if (offset_in_cluster < 0 || |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1964 | offset_in_cluster + bytes > buf_len) { |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1965 | ret = -EINVAL; |
| 1966 | goto out; |
| 1967 | } |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1968 | qemu_iovec_from_buf(qiov, 0, uncomp_buf + offset_in_cluster, bytes); |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1969 | ret = 0; |
| 1970 | |
| 1971 | out: |
| 1972 | g_free(uncomp_buf); |
| 1973 | g_free(cluster_buf); |
| 1974 | return ret; |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1975 | } |
| 1976 | |
Kevin Wolf | b9b10c3 | 2023-02-03 16:21:50 +0100 | [diff] [blame] | 1977 | static int coroutine_fn GRAPH_RDLOCK |
Vladimir Sementsov-Ogievskiy | f7ef38d | 2021-09-03 13:27:59 +0300 | [diff] [blame] | 1978 | vmdk_co_preadv(BlockDriverState *bs, int64_t offset, int64_t bytes, |
| 1979 | QEMUIOVector *qiov, BdrvRequestFlags flags) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1980 | { |
| 1981 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1982 | int ret; |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1983 | uint64_t n_bytes, offset_in_cluster; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1984 | VmdkExtent *extent = NULL; |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1985 | QEMUIOVector local_qiov; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1986 | uint64_t cluster_offset; |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1987 | uint64_t bytes_done = 0; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1988 | |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1989 | qemu_iovec_init(&local_qiov, qiov->niov); |
| 1990 | qemu_co_mutex_lock(&s->lock); |
| 1991 | |
| 1992 | while (bytes > 0) { |
| 1993 | extent = find_extent(s, offset >> BDRV_SECTOR_BITS, extent); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1994 | if (!extent) { |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1995 | ret = -EIO; |
| 1996 | goto fail; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1997 | } |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1998 | ret = get_cluster_offset(bs, extent, NULL, |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1999 | offset, false, &cluster_offset, 0, 0); |
| 2000 | offset_in_cluster = vmdk_find_offset_in_cluster(extent, offset); |
| 2001 | |
| 2002 | n_bytes = MIN(bytes, extent->cluster_sectors * BDRV_SECTOR_SIZE |
| 2003 | - offset_in_cluster); |
| 2004 | |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 2005 | if (ret != VMDK_OK) { |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 2006 | /* if not allocated, try to read from parent image, if exist */ |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 2007 | if (bs->backing && ret != VMDK_ZEROED) { |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 2008 | if (!vmdk_is_cid_valid(bs)) { |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 2009 | ret = -EINVAL; |
| 2010 | goto fail; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 2011 | } |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 2012 | |
| 2013 | qemu_iovec_reset(&local_qiov); |
| 2014 | qemu_iovec_concat(&local_qiov, qiov, bytes_done, n_bytes); |
| 2015 | |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 2016 | /* qcow2 emits this on bs->file instead of bs->backing */ |
Paolo Bonzini | 1736239 | 2023-06-01 13:51:45 +0200 | [diff] [blame] | 2017 | BLKDBG_CO_EVENT(bs->file, BLKDBG_READ_BACKING_AIO); |
Kevin Wolf | a03ef88 | 2016-06-20 21:31:46 +0200 | [diff] [blame] | 2018 | ret = bdrv_co_preadv(bs->backing, offset, n_bytes, |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 2019 | &local_qiov, 0); |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 2020 | if (ret < 0) { |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 2021 | goto fail; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 2022 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 2023 | } else { |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 2024 | qemu_iovec_memset(qiov, bytes_done, 0, n_bytes); |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 2025 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 2026 | } else { |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 2027 | qemu_iovec_reset(&local_qiov); |
| 2028 | qemu_iovec_concat(&local_qiov, qiov, bytes_done, n_bytes); |
| 2029 | |
| 2030 | ret = vmdk_read_extent(extent, cluster_offset, offset_in_cluster, |
| 2031 | &local_qiov, n_bytes); |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 2032 | if (ret) { |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 2033 | goto fail; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 2034 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 2035 | } |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 2036 | bytes -= n_bytes; |
| 2037 | offset += n_bytes; |
| 2038 | bytes_done += n_bytes; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 2039 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 2040 | |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 2041 | ret = 0; |
| 2042 | fail: |
Paolo Bonzini | 2914caa | 2011-10-20 13:16:22 +0200 | [diff] [blame] | 2043 | qemu_co_mutex_unlock(&s->lock); |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 2044 | qemu_iovec_destroy(&local_qiov); |
| 2045 | |
Paolo Bonzini | 2914caa | 2011-10-20 13:16:22 +0200 | [diff] [blame] | 2046 | return ret; |
| 2047 | } |
| 2048 | |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 2049 | /** |
| 2050 | * vmdk_write: |
| 2051 | * @zeroed: buf is ignored (data is zero), use zeroed_grain GTE feature |
Fam Zheng | 8e50724 | 2013-08-01 18:12:17 +0800 | [diff] [blame] | 2052 | * if possible, otherwise return -ENOTSUP. |
| 2053 | * @zero_dry_run: used for zeroed == true only, don't update L2 table, just try |
| 2054 | * with each cluster. By dry run we can find if the zero write |
| 2055 | * is possible without modifying image data. |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 2056 | * |
| 2057 | * Returns: error code with 0 for success. |
| 2058 | */ |
Kevin Wolf | b9b10c3 | 2023-02-03 16:21:50 +0100 | [diff] [blame] | 2059 | static int coroutine_fn GRAPH_RDLOCK |
| 2060 | vmdk_pwritev(BlockDriverState *bs, uint64_t offset, uint64_t bytes, |
| 2061 | QEMUIOVector *qiov, bool zeroed, bool zero_dry_run) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 2062 | { |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 2063 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 2064 | VmdkExtent *extent = NULL; |
Fam Zheng | 585ea0c | 2014-01-08 09:42:07 +0800 | [diff] [blame] | 2065 | int ret; |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2066 | int64_t offset_in_cluster, n_bytes; |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 2067 | uint64_t cluster_offset; |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2068 | uint64_t bytes_done = 0; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 2069 | VmdkMetaData m_data; |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 2070 | |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2071 | if (DIV_ROUND_UP(offset, BDRV_SECTOR_SIZE) > bs->total_sectors) { |
| 2072 | error_report("Wrong offset: offset=0x%" PRIx64 |
Markus Armbruster | 9af9e0f | 2015-12-18 16:35:19 +0100 | [diff] [blame] | 2073 | " total_sectors=0x%" PRIx64, |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2074 | offset, bs->total_sectors); |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 2075 | return -EIO; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 2076 | } |
| 2077 | |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2078 | while (bytes > 0) { |
| 2079 | extent = find_extent(s, offset >> BDRV_SECTOR_BITS, extent); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 2080 | if (!extent) { |
| 2081 | return -EIO; |
| 2082 | } |
Sam Eiderman | 98eb973 | 2019-06-20 12:10:57 +0300 | [diff] [blame] | 2083 | if (extent->sesparse) { |
| 2084 | return -ENOTSUP; |
| 2085 | } |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2086 | offset_in_cluster = vmdk_find_offset_in_cluster(extent, offset); |
| 2087 | n_bytes = MIN(bytes, extent->cluster_sectors * BDRV_SECTOR_SIZE |
| 2088 | - offset_in_cluster); |
| 2089 | |
| 2090 | ret = get_cluster_offset(bs, extent, &m_data, offset, |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 2091 | !(extent->compressed || zeroed), |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2092 | &cluster_offset, offset_in_cluster, |
| 2093 | offset_in_cluster + n_bytes); |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 2094 | if (extent->compressed) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 2095 | if (ret == VMDK_OK) { |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 2096 | /* Refuse write to allocated cluster for streamOptimized */ |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 2097 | error_report("Could not write to allocated cluster" |
| 2098 | " for streamOptimized"); |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 2099 | return -EIO; |
Kevin Wolf | 2821c1c | 2020-04-30 15:30:03 +0200 | [diff] [blame] | 2100 | } else if (!zeroed) { |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 2101 | /* allocate */ |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2102 | ret = get_cluster_offset(bs, extent, &m_data, offset, |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 2103 | true, &cluster_offset, 0, 0); |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 2104 | } |
| 2105 | } |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 2106 | if (ret == VMDK_ERROR) { |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 2107 | return -EINVAL; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 2108 | } |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 2109 | if (zeroed) { |
| 2110 | /* Do zeroed write, buf is ignored */ |
| 2111 | if (extent->has_zero_grain && |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2112 | offset_in_cluster == 0 && |
| 2113 | n_bytes >= extent->cluster_sectors * BDRV_SECTOR_SIZE) { |
| 2114 | n_bytes = extent->cluster_sectors * BDRV_SECTOR_SIZE; |
Kevin Wolf | 78cae78 | 2020-04-30 15:30:05 +0200 | [diff] [blame] | 2115 | if (!zero_dry_run && ret != VMDK_ZEROED) { |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 2116 | /* update L2 tables */ |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 2117 | if (vmdk_L2update(extent, &m_data, VMDK_GTE_ZEROED) |
| 2118 | != VMDK_OK) { |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 2119 | return -EIO; |
| 2120 | } |
| 2121 | } |
| 2122 | } else { |
| 2123 | return -ENOTSUP; |
| 2124 | } |
| 2125 | } else { |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2126 | ret = vmdk_write_extent(extent, cluster_offset, offset_in_cluster, |
| 2127 | qiov, bytes_done, n_bytes, offset); |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 2128 | if (ret) { |
| 2129 | return ret; |
| 2130 | } |
Kevin Wolf | 4dc20e6 | 2020-04-30 15:30:02 +0200 | [diff] [blame] | 2131 | if (m_data.new_allocation) { |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 2132 | /* update L2 tables */ |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 2133 | if (vmdk_L2update(extent, &m_data, |
| 2134 | cluster_offset >> BDRV_SECTOR_BITS) |
| 2135 | != VMDK_OK) { |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 2136 | return -EIO; |
| 2137 | } |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 2138 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 2139 | } |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2140 | bytes -= n_bytes; |
| 2141 | offset += n_bytes; |
| 2142 | bytes_done += n_bytes; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 2143 | |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 2144 | /* update CID on the first write every time the virtual disk is |
| 2145 | * opened */ |
Fam Zheng | 69b4d86 | 2011-07-12 19:56:34 +0800 | [diff] [blame] | 2146 | if (!s->cid_updated) { |
Fam Zheng | e5dc64b | 2014-12-04 07:28:29 +0800 | [diff] [blame] | 2147 | ret = vmdk_write_cid(bs, g_random_int()); |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 2148 | if (ret < 0) { |
| 2149 | return ret; |
| 2150 | } |
Fam Zheng | 69b4d86 | 2011-07-12 19:56:34 +0800 | [diff] [blame] | 2151 | s->cid_updated = true; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 2152 | } |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 2153 | } |
| 2154 | return 0; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 2155 | } |
| 2156 | |
Kevin Wolf | b9b10c3 | 2023-02-03 16:21:50 +0100 | [diff] [blame] | 2157 | static int coroutine_fn GRAPH_RDLOCK |
Vladimir Sementsov-Ogievskiy | e75abed | 2021-09-03 13:28:00 +0300 | [diff] [blame] | 2158 | vmdk_co_pwritev(BlockDriverState *bs, int64_t offset, int64_t bytes, |
| 2159 | QEMUIOVector *qiov, BdrvRequestFlags flags) |
Paolo Bonzini | e183ef7 | 2011-10-20 13:16:23 +0200 | [diff] [blame] | 2160 | { |
| 2161 | int ret; |
| 2162 | BDRVVmdkState *s = bs->opaque; |
| 2163 | qemu_co_mutex_lock(&s->lock); |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2164 | ret = vmdk_pwritev(bs, offset, bytes, qiov, false, false); |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 2165 | qemu_co_mutex_unlock(&s->lock); |
| 2166 | return ret; |
| 2167 | } |
| 2168 | |
Kevin Wolf | 7b1fb72 | 2023-02-03 16:21:49 +0100 | [diff] [blame] | 2169 | static int coroutine_fn GRAPH_RDLOCK |
Vladimir Sementsov-Ogievskiy | e75abed | 2021-09-03 13:28:00 +0300 | [diff] [blame] | 2170 | vmdk_co_pwritev_compressed(BlockDriverState *bs, int64_t offset, int64_t bytes, |
| 2171 | QEMUIOVector *qiov) |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2172 | { |
yuchenlin | 51b3c6b | 2018-09-13 16:29:52 +0800 | [diff] [blame] | 2173 | if (bytes == 0) { |
| 2174 | /* The caller will write bytes 0 to signal EOF. |
| 2175 | * When receive it, we align EOF to a sector boundary. */ |
| 2176 | BDRVVmdkState *s = bs->opaque; |
| 2177 | int i, ret; |
| 2178 | int64_t length; |
| 2179 | |
| 2180 | for (i = 0; i < s->num_extents; i++) { |
Paolo Bonzini | 0af02bd | 2023-06-01 13:51:44 +0200 | [diff] [blame] | 2181 | length = bdrv_co_getlength(s->extents[i].file->bs); |
yuchenlin | 51b3c6b | 2018-09-13 16:29:52 +0800 | [diff] [blame] | 2182 | if (length < 0) { |
| 2183 | return length; |
| 2184 | } |
| 2185 | length = QEMU_ALIGN_UP(length, BDRV_SECTOR_SIZE); |
Alberto Faria | a5c4e5b | 2022-10-13 14:37:10 +0200 | [diff] [blame] | 2186 | ret = bdrv_co_truncate(s->extents[i].file, length, false, |
| 2187 | PREALLOC_MODE_OFF, 0, NULL); |
yuchenlin | 51b3c6b | 2018-09-13 16:29:52 +0800 | [diff] [blame] | 2188 | if (ret < 0) { |
| 2189 | return ret; |
| 2190 | } |
| 2191 | } |
| 2192 | return 0; |
| 2193 | } |
Pavel Butsykin | b2c622d | 2016-07-22 11:17:45 +0300 | [diff] [blame] | 2194 | return vmdk_co_pwritev(bs, offset, bytes, qiov, 0); |
Fam Zheng | ba0ad89 | 2014-05-06 21:08:44 +0800 | [diff] [blame] | 2195 | } |
| 2196 | |
Kevin Wolf | b9b10c3 | 2023-02-03 16:21:50 +0100 | [diff] [blame] | 2197 | static int coroutine_fn GRAPH_RDLOCK |
| 2198 | vmdk_co_pwrite_zeroes(BlockDriverState *bs, int64_t offset, int64_t bytes, |
| 2199 | BdrvRequestFlags flags) |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 2200 | { |
| 2201 | int ret; |
| 2202 | BDRVVmdkState *s = bs->opaque; |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2203 | |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 2204 | qemu_co_mutex_lock(&s->lock); |
Fam Zheng | 8e50724 | 2013-08-01 18:12:17 +0800 | [diff] [blame] | 2205 | /* write zeroes could fail if sectors not aligned to cluster, test it with |
| 2206 | * dry_run == true before really updating image */ |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2207 | ret = vmdk_pwritev(bs, offset, bytes, NULL, true, true); |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 2208 | if (!ret) { |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2209 | ret = vmdk_pwritev(bs, offset, bytes, NULL, true, false); |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 2210 | } |
Paolo Bonzini | e183ef7 | 2011-10-20 13:16:23 +0200 | [diff] [blame] | 2211 | qemu_co_mutex_unlock(&s->lock); |
| 2212 | return ret; |
| 2213 | } |
| 2214 | |
Paolo Bonzini | 28944f9 | 2023-06-01 13:51:41 +0200 | [diff] [blame] | 2215 | static int coroutine_fn GRAPH_UNLOCKED |
Kevin Wolf | 4db7ba3 | 2023-05-10 22:35:54 +0200 | [diff] [blame] | 2216 | vmdk_init_extent(BlockBackend *blk, int64_t filesize, bool flat, bool compress, |
| 2217 | bool zeroed_grain, Error **errp) |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2218 | { |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2219 | int ret, i; |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2220 | VMDK4Header header; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2221 | uint32_t tmp, magic, grains, gd_sectors, gt_size, gt_count; |
| 2222 | uint32_t *gd_buf = NULL; |
| 2223 | int gd_buf_size; |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 2224 | |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2225 | if (flat) { |
Paolo Bonzini | 28944f9 | 2023-06-01 13:51:41 +0200 | [diff] [blame] | 2226 | ret = blk_co_truncate(blk, filesize, false, PREALLOC_MODE_OFF, 0, errp); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2227 | goto exit; |
| 2228 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2229 | magic = cpu_to_be32(VMDK4_MAGIC); |
| 2230 | memset(&header, 0, sizeof(header)); |
Fam Zheng | d62d9dc | 2015-09-17 13:04:10 +0800 | [diff] [blame] | 2231 | if (compress) { |
| 2232 | header.version = 3; |
| 2233 | } else if (zeroed_grain) { |
| 2234 | header.version = 2; |
| 2235 | } else { |
| 2236 | header.version = 1; |
| 2237 | } |
Fam Zheng | 95b0aa4 | 2013-05-02 10:25:25 +0800 | [diff] [blame] | 2238 | header.flags = VMDK4_FLAG_RGD | VMDK4_FLAG_NL_DETECT |
Fam Zheng | 69e0b6d | 2013-05-02 10:25:24 +0800 | [diff] [blame] | 2239 | | (compress ? VMDK4_FLAG_COMPRESS | VMDK4_FLAG_MARKER : 0) |
| 2240 | | (zeroed_grain ? VMDK4_FLAG_ZERO_GRAIN : 0); |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 2241 | header.compressAlgorithm = compress ? VMDK4_COMPRESSION_DEFLATE : 0; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2242 | header.capacity = filesize / BDRV_SECTOR_SIZE; |
Alexander Graf | 16372ff | 2011-05-25 00:46:55 +0200 | [diff] [blame] | 2243 | header.granularity = 128; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2244 | header.num_gtes_per_gt = BDRV_SECTOR_SIZE; |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2245 | |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2246 | grains = DIV_ROUND_UP(filesize / BDRV_SECTOR_SIZE, header.granularity); |
| 2247 | gt_size = DIV_ROUND_UP(header.num_gtes_per_gt * sizeof(uint32_t), |
| 2248 | BDRV_SECTOR_SIZE); |
| 2249 | gt_count = DIV_ROUND_UP(grains, header.num_gtes_per_gt); |
| 2250 | gd_sectors = DIV_ROUND_UP(gt_count * sizeof(uint32_t), BDRV_SECTOR_SIZE); |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2251 | |
| 2252 | header.desc_offset = 1; |
| 2253 | header.desc_size = 20; |
| 2254 | header.rgd_offset = header.desc_offset + header.desc_size; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2255 | header.gd_offset = header.rgd_offset + gd_sectors + (gt_size * gt_count); |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2256 | header.grain_offset = |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2257 | ROUND_UP(header.gd_offset + gd_sectors + (gt_size * gt_count), |
| 2258 | header.granularity); |
Alexander Graf | 16372ff | 2011-05-25 00:46:55 +0200 | [diff] [blame] | 2259 | /* swap endianness for all header fields */ |
| 2260 | header.version = cpu_to_le32(header.version); |
| 2261 | header.flags = cpu_to_le32(header.flags); |
| 2262 | header.capacity = cpu_to_le64(header.capacity); |
| 2263 | header.granularity = cpu_to_le64(header.granularity); |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 2264 | header.num_gtes_per_gt = cpu_to_le32(header.num_gtes_per_gt); |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2265 | header.desc_offset = cpu_to_le64(header.desc_offset); |
| 2266 | header.desc_size = cpu_to_le64(header.desc_size); |
| 2267 | header.rgd_offset = cpu_to_le64(header.rgd_offset); |
| 2268 | header.gd_offset = cpu_to_le64(header.gd_offset); |
| 2269 | header.grain_offset = cpu_to_le64(header.grain_offset); |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 2270 | header.compressAlgorithm = cpu_to_le16(header.compressAlgorithm); |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2271 | |
| 2272 | header.check_bytes[0] = 0xa; |
| 2273 | header.check_bytes[1] = 0x20; |
| 2274 | header.check_bytes[2] = 0xd; |
| 2275 | header.check_bytes[3] = 0xa; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 2276 | |
| 2277 | /* write all the data */ |
Paolo Bonzini | 28944f9 | 2023-06-01 13:51:41 +0200 | [diff] [blame] | 2278 | ret = blk_co_pwrite(blk, 0, sizeof(magic), &magic, 0); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2279 | if (ret < 0) { |
Markus Armbruster | 29ad187 | 2024-05-13 16:17:00 +0200 | [diff] [blame] | 2280 | error_setg_errno(errp, -ret, "failed to write VMDK magic"); |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 2281 | goto exit; |
| 2282 | } |
Paolo Bonzini | 28944f9 | 2023-06-01 13:51:41 +0200 | [diff] [blame] | 2283 | ret = blk_co_pwrite(blk, sizeof(magic), sizeof(header), &header, 0); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2284 | if (ret < 0) { |
Markus Armbruster | 29ad187 | 2024-05-13 16:17:00 +0200 | [diff] [blame] | 2285 | error_setg_errno(errp, -ret, "failed to write VMDK header"); |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 2286 | goto exit; |
| 2287 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2288 | |
Paolo Bonzini | 28944f9 | 2023-06-01 13:51:41 +0200 | [diff] [blame] | 2289 | ret = blk_co_truncate(blk, le64_to_cpu(header.grain_offset) << 9, false, |
| 2290 | PREALLOC_MODE_OFF, 0, errp); |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 2291 | if (ret < 0) { |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 2292 | goto exit; |
| 2293 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2294 | |
| 2295 | /* write grain directory */ |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2296 | gd_buf_size = gd_sectors * BDRV_SECTOR_SIZE; |
| 2297 | gd_buf = g_malloc0(gd_buf_size); |
| 2298 | for (i = 0, tmp = le64_to_cpu(header.rgd_offset) + gd_sectors; |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 2299 | i < gt_count; i++, tmp += gt_size) { |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2300 | gd_buf[i] = cpu_to_le32(tmp); |
| 2301 | } |
Paolo Bonzini | 28944f9 | 2023-06-01 13:51:41 +0200 | [diff] [blame] | 2302 | ret = blk_co_pwrite(blk, le64_to_cpu(header.rgd_offset) * BDRV_SECTOR_SIZE, |
| 2303 | gd_buf_size, gd_buf, 0); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2304 | if (ret < 0) { |
Markus Armbruster | 29ad187 | 2024-05-13 16:17:00 +0200 | [diff] [blame] | 2305 | error_setg_errno(errp, -ret, "failed to write VMDK grain directory"); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2306 | goto exit; |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 2307 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 2308 | |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2309 | /* write backup grain directory */ |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2310 | for (i = 0, tmp = le64_to_cpu(header.gd_offset) + gd_sectors; |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 2311 | i < gt_count; i++, tmp += gt_size) { |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2312 | gd_buf[i] = cpu_to_le32(tmp); |
| 2313 | } |
Paolo Bonzini | 28944f9 | 2023-06-01 13:51:41 +0200 | [diff] [blame] | 2314 | ret = blk_co_pwrite(blk, le64_to_cpu(header.gd_offset) * BDRV_SECTOR_SIZE, |
| 2315 | gd_buf_size, gd_buf, 0); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2316 | if (ret < 0) { |
Markus Armbruster | 29ad187 | 2024-05-13 16:17:00 +0200 | [diff] [blame] | 2317 | error_setg_errno(errp, -ret, |
| 2318 | "failed to write VMDK backup grain directory"); |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 2319 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2320 | |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2321 | ret = 0; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2322 | exit: |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2323 | g_free(gd_buf); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2324 | return ret; |
| 2325 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2326 | |
Kevin Wolf | 4db7ba3 | 2023-05-10 22:35:54 +0200 | [diff] [blame] | 2327 | static int coroutine_fn GRAPH_UNLOCKED |
Kevin Wolf | 4ec8df0 | 2023-02-03 16:21:55 +0100 | [diff] [blame] | 2328 | vmdk_create_extent(const char *filename, int64_t filesize, bool flat, |
| 2329 | bool compress, bool zeroed_grain, BlockBackend **pbb, |
| 2330 | QemuOpts *opts, Error **errp) |
Fam Zheng | 5be2849 | 2018-05-15 23:36:31 +0800 | [diff] [blame] | 2331 | { |
| 2332 | int ret; |
| 2333 | BlockBackend *blk = NULL; |
Fam Zheng | 5be2849 | 2018-05-15 23:36:31 +0800 | [diff] [blame] | 2334 | |
Emanuele Giuseppe Esposito | 2475a0d | 2022-11-28 09:23:31 -0500 | [diff] [blame] | 2335 | ret = bdrv_co_create_file(filename, opts, errp); |
Fam Zheng | 5be2849 | 2018-05-15 23:36:31 +0800 | [diff] [blame] | 2336 | if (ret < 0) { |
Fam Zheng | 5be2849 | 2018-05-15 23:36:31 +0800 | [diff] [blame] | 2337 | goto exit; |
| 2338 | } |
| 2339 | |
Kevin Wolf | 882f202 | 2023-01-26 18:24:29 +0100 | [diff] [blame] | 2340 | blk = blk_co_new_open(filename, NULL, NULL, |
| 2341 | BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_PROTOCOL, |
| 2342 | errp); |
Fam Zheng | 5be2849 | 2018-05-15 23:36:31 +0800 | [diff] [blame] | 2343 | if (blk == NULL) { |
Fam Zheng | 5be2849 | 2018-05-15 23:36:31 +0800 | [diff] [blame] | 2344 | ret = -EIO; |
| 2345 | goto exit; |
| 2346 | } |
| 2347 | |
| 2348 | blk_set_allow_write_beyond_eof(blk, true); |
| 2349 | |
| 2350 | ret = vmdk_init_extent(blk, filesize, flat, compress, zeroed_grain, errp); |
| 2351 | exit: |
| 2352 | if (blk) { |
| 2353 | if (pbb) { |
| 2354 | *pbb = blk; |
| 2355 | } else { |
Kevin Wolf | b2ab5f5 | 2023-05-04 13:57:33 +0200 | [diff] [blame] | 2356 | blk_co_unref(blk); |
Fam Zheng | 5be2849 | 2018-05-15 23:36:31 +0800 | [diff] [blame] | 2357 | blk = NULL; |
| 2358 | } |
| 2359 | } |
| 2360 | return ret; |
| 2361 | } |
| 2362 | |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2363 | static int filename_decompose(const char *filename, char *path, char *prefix, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 2364 | char *postfix, size_t buf_len, Error **errp) |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2365 | { |
| 2366 | const char *p, *q; |
| 2367 | |
| 2368 | if (filename == NULL || !strlen(filename)) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 2369 | error_setg(errp, "No filename provided"); |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 2370 | return VMDK_ERROR; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2371 | } |
| 2372 | p = strrchr(filename, '/'); |
| 2373 | if (p == NULL) { |
| 2374 | p = strrchr(filename, '\\'); |
| 2375 | } |
| 2376 | if (p == NULL) { |
| 2377 | p = strrchr(filename, ':'); |
| 2378 | } |
| 2379 | if (p != NULL) { |
| 2380 | p++; |
| 2381 | if (p - filename >= buf_len) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 2382 | return VMDK_ERROR; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2383 | } |
| 2384 | pstrcpy(path, p - filename + 1, filename); |
| 2385 | } else { |
| 2386 | p = filename; |
| 2387 | path[0] = '\0'; |
| 2388 | } |
| 2389 | q = strrchr(p, '.'); |
| 2390 | if (q == NULL) { |
| 2391 | pstrcpy(prefix, buf_len, p); |
| 2392 | postfix[0] = '\0'; |
| 2393 | } else { |
| 2394 | if (q - p >= buf_len) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 2395 | return VMDK_ERROR; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2396 | } |
| 2397 | pstrcpy(prefix, q - p + 1, p); |
| 2398 | pstrcpy(postfix, buf_len, q); |
| 2399 | } |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 2400 | return VMDK_OK; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2401 | } |
| 2402 | |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2403 | /* |
| 2404 | * idx == 0: get or create the descriptor file (also the image file if in a |
| 2405 | * non-split format. |
| 2406 | * idx >= 1: get the n-th extent if in a split subformat |
| 2407 | */ |
Kevin Wolf | 4db7ba3 | 2023-05-10 22:35:54 +0200 | [diff] [blame] | 2408 | typedef BlockBackend * coroutine_fn GRAPH_UNLOCKED_PTR |
Kevin Wolf | 4ec8df0 | 2023-02-03 16:21:55 +0100 | [diff] [blame] | 2409 | (*vmdk_create_extent_fn)(int64_t size, int idx, bool flat, bool split, |
| 2410 | bool compress, bool zeroed_grain, void *opaque, |
| 2411 | Error **errp); |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2412 | |
| 2413 | static void vmdk_desc_add_extent(GString *desc, |
| 2414 | const char *extent_line_fmt, |
| 2415 | int64_t size, const char *filename) |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2416 | { |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2417 | char *basename = g_path_get_basename(filename); |
| 2418 | |
| 2419 | g_string_append_printf(desc, extent_line_fmt, |
| 2420 | DIV_ROUND_UP(size, BDRV_SECTOR_SIZE), basename); |
| 2421 | g_free(basename); |
| 2422 | } |
| 2423 | |
Kevin Wolf | 4db7ba3 | 2023-05-10 22:35:54 +0200 | [diff] [blame] | 2424 | static int coroutine_fn GRAPH_UNLOCKED |
Kevin Wolf | 4ec8df0 | 2023-02-03 16:21:55 +0100 | [diff] [blame] | 2425 | vmdk_co_do_create(int64_t size, |
| 2426 | BlockdevVmdkSubformat subformat, |
| 2427 | BlockdevVmdkAdapterType adapter_type, |
| 2428 | const char *backing_file, |
| 2429 | const char *hw_version, |
| 2430 | const char *toolsversion, |
| 2431 | bool compat6, |
| 2432 | bool zeroed_grain, |
| 2433 | vmdk_create_extent_fn extent_fn, |
| 2434 | void *opaque, |
| 2435 | Error **errp) |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2436 | { |
| 2437 | int extent_idx; |
| 2438 | BlockBackend *blk = NULL; |
Kevin Wolf | 4a960ec | 2018-12-07 12:42:19 +0100 | [diff] [blame] | 2439 | BlockBackend *extent_blk; |
Fam Zheng | c13959c | 2014-05-28 11:38:58 +0800 | [diff] [blame] | 2440 | Error *local_err = NULL; |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2441 | char *desc = NULL; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2442 | int ret = 0; |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 2443 | bool flat, split, compress; |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2444 | GString *ext_desc_lines; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2445 | const int64_t split_size = 0x80000000; /* VMDK has constant split size */ |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2446 | int64_t extent_size; |
| 2447 | int64_t created_size = 0; |
| 2448 | const char *extent_line_fmt; |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 2449 | char *parent_desc_line = g_malloc0(BUF_SIZE); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2450 | uint32_t parent_cid = 0xffffffff; |
Othmar Pasteka | 7f2039f | 2013-01-30 00:26:52 +0100 | [diff] [blame] | 2451 | uint32_t number_heads = 16; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2452 | uint32_t desc_offset = 0, desc_len; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2453 | const char desc_template[] = |
| 2454 | "# Disk DescriptorFile\n" |
| 2455 | "version=1\n" |
Fam Zheng | 9b17031 | 2014-04-17 18:43:53 +0800 | [diff] [blame] | 2456 | "CID=%" PRIx32 "\n" |
| 2457 | "parentCID=%" PRIx32 "\n" |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2458 | "createType=\"%s\"\n" |
| 2459 | "%s" |
| 2460 | "\n" |
| 2461 | "# Extent description\n" |
| 2462 | "%s" |
| 2463 | "\n" |
| 2464 | "# The Disk Data Base\n" |
| 2465 | "#DDB\n" |
| 2466 | "\n" |
Janne Karhunen | f249924 | 2016-05-03 02:43:30 -0700 | [diff] [blame] | 2467 | "ddb.virtualHWVersion = \"%s\"\n" |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2468 | "ddb.geometry.cylinders = \"%" PRId64 "\"\n" |
Fam Zheng | 4ab9dab | 2014-04-17 11:34:37 +0800 | [diff] [blame] | 2469 | "ddb.geometry.heads = \"%" PRIu32 "\"\n" |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2470 | "ddb.geometry.sectors = \"63\"\n" |
Thomas Weißschuh | f3d43df | 2021-09-13 15:04:19 +0200 | [diff] [blame] | 2471 | "ddb.adapterType = \"%s\"\n" |
| 2472 | "ddb.toolsVersion = \"%s\"\n"; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2473 | |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2474 | ext_desc_lines = g_string_new(NULL); |
| 2475 | |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2476 | /* Read out options */ |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2477 | if (compat6) { |
| 2478 | if (hw_version) { |
Janne Karhunen | f249924 | 2016-05-03 02:43:30 -0700 | [diff] [blame] | 2479 | error_setg(errp, |
| 2480 | "compat6 cannot be enabled with hwversion set"); |
| 2481 | ret = -EINVAL; |
| 2482 | goto exit; |
| 2483 | } |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2484 | hw_version = "6"; |
Janne Karhunen | f249924 | 2016-05-03 02:43:30 -0700 | [diff] [blame] | 2485 | } |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2486 | if (!hw_version) { |
| 2487 | hw_version = "4"; |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 2488 | } |
Thomas Weißschuh | f3d43df | 2021-09-13 15:04:19 +0200 | [diff] [blame] | 2489 | if (!toolsversion) { |
| 2490 | toolsversion = "2147483647"; |
| 2491 | } |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 2492 | |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2493 | if (adapter_type != BLOCKDEV_VMDK_ADAPTER_TYPE_IDE) { |
Othmar Pasteka | 7f2039f | 2013-01-30 00:26:52 +0100 | [diff] [blame] | 2494 | /* that's the number of heads with which vmware operates when |
| 2495 | creating, exporting, etc. vmdk files with a non-ide adapter type */ |
| 2496 | number_heads = 255; |
| 2497 | } |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2498 | split = (subformat == BLOCKDEV_VMDK_SUBFORMAT_TWOGBMAXEXTENTFLAT) || |
| 2499 | (subformat == BLOCKDEV_VMDK_SUBFORMAT_TWOGBMAXEXTENTSPARSE); |
| 2500 | flat = (subformat == BLOCKDEV_VMDK_SUBFORMAT_MONOLITHICFLAT) || |
| 2501 | (subformat == BLOCKDEV_VMDK_SUBFORMAT_TWOGBMAXEXTENTFLAT); |
| 2502 | compress = subformat == BLOCKDEV_VMDK_SUBFORMAT_STREAMOPTIMIZED; |
| 2503 | |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2504 | if (flat) { |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2505 | extent_line_fmt = "RW %" PRId64 " FLAT \"%s\" 0\n"; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2506 | } else { |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2507 | extent_line_fmt = "RW %" PRId64 " SPARSE \"%s\"\n"; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2508 | } |
| 2509 | if (flat && backing_file) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 2510 | error_setg(errp, "Flat image can't have backing file"); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2511 | ret = -ENOTSUP; |
| 2512 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2513 | } |
Fam Zheng | 52c8d62 | 2013-10-11 15:43:23 +0800 | [diff] [blame] | 2514 | if (flat && zeroed_grain) { |
| 2515 | error_setg(errp, "Flat image can't enable zeroed grain"); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2516 | ret = -ENOTSUP; |
| 2517 | goto exit; |
Fam Zheng | 52c8d62 | 2013-10-11 15:43:23 +0800 | [diff] [blame] | 2518 | } |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2519 | |
| 2520 | /* Create extents */ |
| 2521 | if (split) { |
| 2522 | extent_size = split_size; |
| 2523 | } else { |
| 2524 | extent_size = size; |
| 2525 | } |
| 2526 | if (!split && !flat) { |
| 2527 | created_size = extent_size; |
| 2528 | } else { |
| 2529 | created_size = 0; |
| 2530 | } |
| 2531 | /* Get the descriptor file BDS */ |
| 2532 | blk = extent_fn(created_size, 0, flat, split, compress, zeroed_grain, |
| 2533 | opaque, errp); |
| 2534 | if (!blk) { |
| 2535 | ret = -EIO; |
| 2536 | goto exit; |
| 2537 | } |
| 2538 | if (!split && !flat) { |
| 2539 | vmdk_desc_add_extent(ext_desc_lines, extent_line_fmt, created_size, |
| 2540 | blk_bs(blk)->filename); |
| 2541 | } |
| 2542 | |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2543 | if (backing_file) { |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2544 | BlockBackend *backing; |
Max Reitz | 645ae7d | 2019-02-01 20:29:14 +0100 | [diff] [blame] | 2545 | char *full_backing = |
| 2546 | bdrv_get_full_backing_filename_from_filename(blk_bs(blk)->filename, |
| 2547 | backing_file, |
| 2548 | &local_err); |
Max Reitz | 1085daf | 2014-11-26 17:20:28 +0100 | [diff] [blame] | 2549 | if (local_err) { |
Max Reitz | 1085daf | 2014-11-26 17:20:28 +0100 | [diff] [blame] | 2550 | error_propagate(errp, local_err); |
| 2551 | ret = -ENOENT; |
| 2552 | goto exit; |
| 2553 | } |
Max Reitz | 645ae7d | 2019-02-01 20:29:14 +0100 | [diff] [blame] | 2554 | assert(full_backing); |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 2555 | |
Kevin Wolf | 882f202 | 2023-01-26 18:24:29 +0100 | [diff] [blame] | 2556 | backing = blk_co_new_open(full_backing, NULL, NULL, |
| 2557 | BDRV_O_NO_BACKING, errp); |
Max Reitz | 1085daf | 2014-11-26 17:20:28 +0100 | [diff] [blame] | 2558 | g_free(full_backing); |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2559 | if (backing == NULL) { |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 2560 | ret = -EIO; |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2561 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2562 | } |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2563 | if (strcmp(blk_bs(backing)->drv->format_name, "vmdk")) { |
| 2564 | error_setg(errp, "Invalid backing file format: %s. Must be vmdk", |
| 2565 | blk_bs(backing)->drv->format_name); |
Kevin Wolf | b2ab5f5 | 2023-05-04 13:57:33 +0200 | [diff] [blame] | 2566 | blk_co_unref(backing); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2567 | ret = -EINVAL; |
| 2568 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2569 | } |
Kevin Wolf | 1f051dc | 2023-10-27 17:53:33 +0200 | [diff] [blame] | 2570 | |
| 2571 | bdrv_graph_co_rdlock(); |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2572 | ret = vmdk_read_cid(blk_bs(backing), 0, &parent_cid); |
Kevin Wolf | 1f051dc | 2023-10-27 17:53:33 +0200 | [diff] [blame] | 2573 | bdrv_graph_co_rdunlock(); |
Kevin Wolf | b2ab5f5 | 2023-05-04 13:57:33 +0200 | [diff] [blame] | 2574 | blk_co_unref(backing); |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 2575 | if (ret) { |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2576 | error_setg(errp, "Failed to read parent CID"); |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 2577 | goto exit; |
| 2578 | } |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 2579 | snprintf(parent_desc_line, BUF_SIZE, |
Fam Zheng | 8ed610a | 2013-06-26 17:24:32 +0800 | [diff] [blame] | 2580 | "parentFileNameHint=\"%s\"", backing_file); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2581 | } |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2582 | extent_idx = 1; |
| 2583 | while (created_size < size) { |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2584 | int64_t cur_size = MIN(size - created_size, extent_size); |
| 2585 | extent_blk = extent_fn(cur_size, extent_idx, flat, split, compress, |
| 2586 | zeroed_grain, opaque, errp); |
| 2587 | if (!extent_blk) { |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2588 | ret = -EINVAL; |
| 2589 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2590 | } |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2591 | vmdk_desc_add_extent(ext_desc_lines, extent_line_fmt, cur_size, |
| 2592 | blk_bs(extent_blk)->filename); |
| 2593 | created_size += cur_size; |
| 2594 | extent_idx++; |
Kevin Wolf | b2ab5f5 | 2023-05-04 13:57:33 +0200 | [diff] [blame] | 2595 | blk_co_unref(extent_blk); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2596 | } |
Kevin Wolf | 4a960ec | 2018-12-07 12:42:19 +0100 | [diff] [blame] | 2597 | |
| 2598 | /* Check whether we got excess extents */ |
| 2599 | extent_blk = extent_fn(-1, extent_idx, flat, split, compress, zeroed_grain, |
| 2600 | opaque, NULL); |
| 2601 | if (extent_blk) { |
Kevin Wolf | b2ab5f5 | 2023-05-04 13:57:33 +0200 | [diff] [blame] | 2602 | blk_co_unref(extent_blk); |
Kevin Wolf | 4a960ec | 2018-12-07 12:42:19 +0100 | [diff] [blame] | 2603 | error_setg(errp, "List of extents contains unused extents"); |
| 2604 | ret = -EINVAL; |
| 2605 | goto exit; |
| 2606 | } |
| 2607 | |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2608 | /* generate descriptor file */ |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2609 | desc = g_strdup_printf(desc_template, |
Fam Zheng | e5dc64b | 2014-12-04 07:28:29 +0800 | [diff] [blame] | 2610 | g_random_int(), |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2611 | parent_cid, |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2612 | BlockdevVmdkSubformat_str(subformat), |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2613 | parent_desc_line, |
| 2614 | ext_desc_lines->str, |
Janne Karhunen | f249924 | 2016-05-03 02:43:30 -0700 | [diff] [blame] | 2615 | hw_version, |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2616 | size / |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2617 | (int64_t)(63 * number_heads * BDRV_SECTOR_SIZE), |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2618 | number_heads, |
Thomas Weißschuh | f3d43df | 2021-09-13 15:04:19 +0200 | [diff] [blame] | 2619 | BlockdevVmdkAdapterType_str(adapter_type), |
| 2620 | toolsversion); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2621 | desc_len = strlen(desc); |
| 2622 | /* the descriptor offset = 0x200 */ |
| 2623 | if (!split && !flat) { |
| 2624 | desc_offset = 0x200; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2625 | } |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 2626 | |
Alberto Faria | a5c4e5b | 2022-10-13 14:37:10 +0200 | [diff] [blame] | 2627 | ret = blk_co_pwrite(blk, desc_offset, desc_len, desc, 0); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2628 | if (ret < 0) { |
| 2629 | error_setg_errno(errp, -ret, "Could not write description"); |
| 2630 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2631 | } |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2632 | /* bdrv_pwrite write padding zeros to align to sector, we don't need that |
| 2633 | * for description file */ |
| 2634 | if (desc_offset == 0) { |
Alberto Faria | a5c4e5b | 2022-10-13 14:37:10 +0200 | [diff] [blame] | 2635 | ret = blk_co_truncate(blk, desc_len, false, PREALLOC_MODE_OFF, 0, errp); |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2636 | if (ret < 0) { |
| 2637 | goto exit; |
| 2638 | } |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 2639 | } |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2640 | ret = 0; |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2641 | exit: |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2642 | if (blk) { |
Kevin Wolf | b2ab5f5 | 2023-05-04 13:57:33 +0200 | [diff] [blame] | 2643 | blk_co_unref(blk); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2644 | } |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2645 | g_free(desc); |
| 2646 | g_free(parent_desc_line); |
| 2647 | g_string_free(ext_desc_lines, true); |
| 2648 | return ret; |
| 2649 | } |
| 2650 | |
| 2651 | typedef struct { |
| 2652 | char *path; |
| 2653 | char *prefix; |
| 2654 | char *postfix; |
| 2655 | QemuOpts *opts; |
| 2656 | } VMDKCreateOptsData; |
| 2657 | |
Kevin Wolf | 4db7ba3 | 2023-05-10 22:35:54 +0200 | [diff] [blame] | 2658 | static BlockBackend * coroutine_fn GRAPH_UNLOCKED |
Kevin Wolf | 4ec8df0 | 2023-02-03 16:21:55 +0100 | [diff] [blame] | 2659 | vmdk_co_create_opts_cb(int64_t size, int idx, bool flat, bool split, |
| 2660 | bool compress, bool zeroed_grain, void *opaque, |
| 2661 | Error **errp) |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2662 | { |
| 2663 | BlockBackend *blk = NULL; |
| 2664 | BlockDriverState *bs = NULL; |
| 2665 | VMDKCreateOptsData *data = opaque; |
| 2666 | char *ext_filename = NULL; |
| 2667 | char *rel_filename = NULL; |
| 2668 | |
Kevin Wolf | 4a960ec | 2018-12-07 12:42:19 +0100 | [diff] [blame] | 2669 | /* We're done, don't create excess extents. */ |
| 2670 | if (size == -1) { |
| 2671 | assert(errp == NULL); |
| 2672 | return NULL; |
| 2673 | } |
| 2674 | |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2675 | if (idx == 0) { |
| 2676 | rel_filename = g_strdup_printf("%s%s", data->prefix, data->postfix); |
| 2677 | } else if (split) { |
| 2678 | rel_filename = g_strdup_printf("%s-%c%03d%s", |
| 2679 | data->prefix, |
| 2680 | flat ? 'f' : 's', idx, data->postfix); |
| 2681 | } else { |
| 2682 | assert(idx == 1); |
| 2683 | rel_filename = g_strdup_printf("%s-flat%s", data->prefix, data->postfix); |
| 2684 | } |
| 2685 | |
| 2686 | ext_filename = g_strdup_printf("%s%s", data->path, rel_filename); |
| 2687 | g_free(rel_filename); |
| 2688 | |
| 2689 | if (vmdk_create_extent(ext_filename, size, |
| 2690 | flat, compress, zeroed_grain, &blk, data->opts, |
| 2691 | errp)) { |
| 2692 | goto exit; |
| 2693 | } |
Kevin Wolf | b2ab5f5 | 2023-05-04 13:57:33 +0200 | [diff] [blame] | 2694 | bdrv_co_unref(bs); |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2695 | exit: |
| 2696 | g_free(ext_filename); |
| 2697 | return blk; |
| 2698 | } |
| 2699 | |
Kevin Wolf | 4db7ba3 | 2023-05-10 22:35:54 +0200 | [diff] [blame] | 2700 | static int coroutine_fn GRAPH_UNLOCKED |
Kevin Wolf | 4ec8df0 | 2023-02-03 16:21:55 +0100 | [diff] [blame] | 2701 | vmdk_co_create_opts(BlockDriver *drv, const char *filename, |
| 2702 | QemuOpts *opts, Error **errp) |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2703 | { |
| 2704 | Error *local_err = NULL; |
| 2705 | char *desc = NULL; |
| 2706 | int64_t total_size = 0; |
| 2707 | char *adapter_type = NULL; |
| 2708 | BlockdevVmdkAdapterType adapter_type_enum; |
| 2709 | char *backing_file = NULL; |
| 2710 | char *hw_version = NULL; |
Thomas Weißschuh | f3d43df | 2021-09-13 15:04:19 +0200 | [diff] [blame] | 2711 | char *toolsversion = NULL; |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2712 | char *fmt = NULL; |
| 2713 | BlockdevVmdkSubformat subformat; |
| 2714 | int ret = 0; |
| 2715 | char *path = g_malloc0(PATH_MAX); |
| 2716 | char *prefix = g_malloc0(PATH_MAX); |
| 2717 | char *postfix = g_malloc0(PATH_MAX); |
| 2718 | char *desc_line = g_malloc0(BUF_SIZE); |
| 2719 | char *ext_filename = g_malloc0(PATH_MAX); |
| 2720 | char *desc_filename = g_malloc0(PATH_MAX); |
| 2721 | char *parent_desc_line = g_malloc0(BUF_SIZE); |
| 2722 | bool zeroed_grain; |
| 2723 | bool compat6; |
| 2724 | VMDKCreateOptsData data; |
Eric Blake | d51a814 | 2020-07-06 15:39:48 -0500 | [diff] [blame] | 2725 | char *backing_fmt = NULL; |
| 2726 | |
| 2727 | backing_fmt = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FMT); |
| 2728 | if (backing_fmt && strcmp(backing_fmt, "vmdk") != 0) { |
| 2729 | error_setg(errp, "backing_file must be a vmdk image"); |
| 2730 | ret = -EINVAL; |
| 2731 | goto exit; |
| 2732 | } |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2733 | |
| 2734 | if (filename_decompose(filename, path, prefix, postfix, PATH_MAX, errp)) { |
| 2735 | ret = -EINVAL; |
| 2736 | goto exit; |
| 2737 | } |
| 2738 | /* Read out options */ |
| 2739 | total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), |
| 2740 | BDRV_SECTOR_SIZE); |
| 2741 | adapter_type = qemu_opt_get_del(opts, BLOCK_OPT_ADAPTER_TYPE); |
| 2742 | backing_file = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FILE); |
| 2743 | hw_version = qemu_opt_get_del(opts, BLOCK_OPT_HWVERSION); |
Thomas Weißschuh | f3d43df | 2021-09-13 15:04:19 +0200 | [diff] [blame] | 2744 | toolsversion = qemu_opt_get_del(opts, BLOCK_OPT_TOOLSVERSION); |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2745 | compat6 = qemu_opt_get_bool_del(opts, BLOCK_OPT_COMPAT6, false); |
| 2746 | if (strcmp(hw_version, "undefined") == 0) { |
| 2747 | g_free(hw_version); |
yuchenlin | 26c9296 | 2019-02-21 11:08:05 +0000 | [diff] [blame] | 2748 | hw_version = NULL; |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2749 | } |
| 2750 | fmt = qemu_opt_get_del(opts, BLOCK_OPT_SUBFMT); |
| 2751 | zeroed_grain = qemu_opt_get_bool_del(opts, BLOCK_OPT_ZEROED_GRAIN, false); |
| 2752 | |
| 2753 | if (adapter_type) { |
| 2754 | adapter_type_enum = qapi_enum_parse(&BlockdevVmdkAdapterType_lookup, |
| 2755 | adapter_type, |
| 2756 | BLOCKDEV_VMDK_ADAPTER_TYPE_IDE, |
| 2757 | &local_err); |
| 2758 | if (local_err) { |
| 2759 | error_propagate(errp, local_err); |
| 2760 | ret = -EINVAL; |
| 2761 | goto exit; |
| 2762 | } |
| 2763 | } else { |
| 2764 | adapter_type_enum = BLOCKDEV_VMDK_ADAPTER_TYPE_IDE; |
| 2765 | } |
| 2766 | |
| 2767 | if (!fmt) { |
| 2768 | /* Default format to monolithicSparse */ |
| 2769 | subformat = BLOCKDEV_VMDK_SUBFORMAT_MONOLITHICSPARSE; |
| 2770 | } else { |
| 2771 | subformat = qapi_enum_parse(&BlockdevVmdkSubformat_lookup, |
| 2772 | fmt, |
| 2773 | BLOCKDEV_VMDK_SUBFORMAT_MONOLITHICSPARSE, |
| 2774 | &local_err); |
| 2775 | if (local_err) { |
| 2776 | error_propagate(errp, local_err); |
| 2777 | ret = -EINVAL; |
| 2778 | goto exit; |
| 2779 | } |
| 2780 | } |
| 2781 | data = (VMDKCreateOptsData){ |
| 2782 | .prefix = prefix, |
| 2783 | .postfix = postfix, |
| 2784 | .path = path, |
| 2785 | .opts = opts, |
| 2786 | }; |
| 2787 | ret = vmdk_co_do_create(total_size, subformat, adapter_type_enum, |
Thomas Weißschuh | f3d43df | 2021-09-13 15:04:19 +0200 | [diff] [blame] | 2788 | backing_file, hw_version, toolsversion, compat6, |
| 2789 | zeroed_grain, vmdk_co_create_opts_cb, &data, errp); |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2790 | |
| 2791 | exit: |
Eric Blake | d51a814 | 2020-07-06 15:39:48 -0500 | [diff] [blame] | 2792 | g_free(backing_fmt); |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 2793 | g_free(adapter_type); |
| 2794 | g_free(backing_file); |
Janne Karhunen | f249924 | 2016-05-03 02:43:30 -0700 | [diff] [blame] | 2795 | g_free(hw_version); |
Thomas Weißschuh | f3d43df | 2021-09-13 15:04:19 +0200 | [diff] [blame] | 2796 | g_free(toolsversion); |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 2797 | g_free(fmt); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2798 | g_free(desc); |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 2799 | g_free(path); |
| 2800 | g_free(prefix); |
| 2801 | g_free(postfix); |
| 2802 | g_free(desc_line); |
| 2803 | g_free(ext_filename); |
| 2804 | g_free(desc_filename); |
| 2805 | g_free(parent_desc_line); |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2806 | return ret; |
| 2807 | } |
| 2808 | |
Kevin Wolf | 4db7ba3 | 2023-05-10 22:35:54 +0200 | [diff] [blame] | 2809 | static BlockBackend * coroutine_fn GRAPH_UNLOCKED |
| 2810 | vmdk_co_create_cb(int64_t size, int idx, bool flat, bool split, bool compress, |
| 2811 | bool zeroed_grain, void *opaque, Error **errp) |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2812 | { |
| 2813 | int ret; |
| 2814 | BlockDriverState *bs; |
| 2815 | BlockBackend *blk; |
| 2816 | BlockdevCreateOptionsVmdk *opts = opaque; |
| 2817 | |
| 2818 | if (idx == 0) { |
Kevin Wolf | 882f202 | 2023-01-26 18:24:29 +0100 | [diff] [blame] | 2819 | bs = bdrv_co_open_blockdev_ref(opts->file, errp); |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2820 | } else { |
| 2821 | int i; |
| 2822 | BlockdevRefList *list = opts->extents; |
| 2823 | for (i = 1; i < idx; i++) { |
| 2824 | if (!list || !list->next) { |
| 2825 | error_setg(errp, "Extent [%d] not specified", i); |
| 2826 | return NULL; |
| 2827 | } |
| 2828 | list = list->next; |
| 2829 | } |
| 2830 | if (!list) { |
| 2831 | error_setg(errp, "Extent [%d] not specified", idx - 1); |
| 2832 | return NULL; |
| 2833 | } |
Kevin Wolf | 882f202 | 2023-01-26 18:24:29 +0100 | [diff] [blame] | 2834 | bs = bdrv_co_open_blockdev_ref(list->value, errp); |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2835 | } |
| 2836 | if (!bs) { |
| 2837 | return NULL; |
| 2838 | } |
Kevin Wolf | 882f202 | 2023-01-26 18:24:29 +0100 | [diff] [blame] | 2839 | blk = blk_co_new_with_bs(bs, |
| 2840 | BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE | |
| 2841 | BLK_PERM_RESIZE, |
| 2842 | BLK_PERM_ALL, |
| 2843 | errp); |
Eric Blake | a3aeeab | 2020-04-28 14:26:46 -0500 | [diff] [blame] | 2844 | if (!blk) { |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2845 | return NULL; |
| 2846 | } |
| 2847 | blk_set_allow_write_beyond_eof(blk, true); |
Kevin Wolf | b2ab5f5 | 2023-05-04 13:57:33 +0200 | [diff] [blame] | 2848 | bdrv_co_unref(bs); |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2849 | |
Kevin Wolf | 4a960ec | 2018-12-07 12:42:19 +0100 | [diff] [blame] | 2850 | if (size != -1) { |
| 2851 | ret = vmdk_init_extent(blk, size, flat, compress, zeroed_grain, errp); |
| 2852 | if (ret) { |
Kevin Wolf | b2ab5f5 | 2023-05-04 13:57:33 +0200 | [diff] [blame] | 2853 | blk_co_unref(blk); |
Kevin Wolf | 4a960ec | 2018-12-07 12:42:19 +0100 | [diff] [blame] | 2854 | blk = NULL; |
| 2855 | } |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2856 | } |
| 2857 | return blk; |
| 2858 | } |
| 2859 | |
Kevin Wolf | 4db7ba3 | 2023-05-10 22:35:54 +0200 | [diff] [blame] | 2860 | static int coroutine_fn GRAPH_UNLOCKED |
Kevin Wolf | 4ec8df0 | 2023-02-03 16:21:55 +0100 | [diff] [blame] | 2861 | vmdk_co_create(BlockdevCreateOptions *create_options, Error **errp) |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2862 | { |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2863 | BlockdevCreateOptionsVmdk *opts; |
| 2864 | |
| 2865 | opts = &create_options->u.vmdk; |
| 2866 | |
| 2867 | /* Validate options */ |
| 2868 | if (!QEMU_IS_ALIGNED(opts->size, BDRV_SECTOR_SIZE)) { |
| 2869 | error_setg(errp, "Image size must be a multiple of 512 bytes"); |
Markus Armbruster | 851fd4a | 2022-11-22 14:49:17 +0100 | [diff] [blame] | 2870 | return -EINVAL; |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 2871 | } |
| 2872 | |
Markus Armbruster | 851fd4a | 2022-11-22 14:49:17 +0100 | [diff] [blame] | 2873 | return vmdk_co_do_create(opts->size, |
| 2874 | opts->subformat, |
| 2875 | opts->adapter_type, |
| 2876 | opts->backing_file, |
| 2877 | opts->hwversion, |
| 2878 | opts->toolsversion, |
| 2879 | false, |
| 2880 | opts->zeroed_grain, |
| 2881 | vmdk_co_create_cb, |
| 2882 | opts, errp); |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2883 | } |
| 2884 | |
bellard | e2731ad | 2004-09-18 19:32:11 +0000 | [diff] [blame] | 2885 | static void vmdk_close(BlockDriverState *bs) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 2886 | { |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 2887 | BDRVVmdkState *s = bs->opaque; |
| 2888 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 2889 | vmdk_free_extents(bs); |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2890 | g_free(s->create_type); |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 2891 | |
Steve Sistare | c8a7fc5 | 2023-10-18 06:03:36 -0700 | [diff] [blame] | 2892 | migrate_del_blocker(&s->migration_blocker); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 2893 | } |
| 2894 | |
Emanuele Giuseppe Esposito | de33563 | 2023-05-04 13:57:43 +0200 | [diff] [blame] | 2895 | static int64_t coroutine_fn GRAPH_RDLOCK |
Emanuele Giuseppe Esposito | 82618d7 | 2023-01-13 21:42:07 +0100 | [diff] [blame] | 2896 | vmdk_co_get_allocated_file_size(BlockDriverState *bs) |
Fam Zheng | 4a1d5e1 | 2011-07-12 19:56:39 +0800 | [diff] [blame] | 2897 | { |
| 2898 | int i; |
| 2899 | int64_t ret = 0; |
| 2900 | int64_t r; |
| 2901 | BDRVVmdkState *s = bs->opaque; |
| 2902 | |
Emanuele Giuseppe Esposito | 82618d7 | 2023-01-13 21:42:07 +0100 | [diff] [blame] | 2903 | ret = bdrv_co_get_allocated_file_size(bs->file->bs); |
Fam Zheng | 4a1d5e1 | 2011-07-12 19:56:39 +0800 | [diff] [blame] | 2904 | if (ret < 0) { |
| 2905 | return ret; |
| 2906 | } |
| 2907 | for (i = 0; i < s->num_extents; i++) { |
Kevin Wolf | 9a4f4c3 | 2015-06-16 14:19:22 +0200 | [diff] [blame] | 2908 | if (s->extents[i].file == bs->file) { |
Fam Zheng | 4a1d5e1 | 2011-07-12 19:56:39 +0800 | [diff] [blame] | 2909 | continue; |
| 2910 | } |
Emanuele Giuseppe Esposito | 82618d7 | 2023-01-13 21:42:07 +0100 | [diff] [blame] | 2911 | r = bdrv_co_get_allocated_file_size(s->extents[i].file->bs); |
Fam Zheng | 4a1d5e1 | 2011-07-12 19:56:39 +0800 | [diff] [blame] | 2912 | if (r < 0) { |
| 2913 | return r; |
| 2914 | } |
| 2915 | ret += r; |
| 2916 | } |
| 2917 | return ret; |
| 2918 | } |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 2919 | |
Kevin Wolf | 0671798 | 2023-10-27 17:53:11 +0200 | [diff] [blame] | 2920 | static int GRAPH_RDLOCK vmdk_has_zero_init(BlockDriverState *bs) |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2921 | { |
| 2922 | int i; |
| 2923 | BDRVVmdkState *s = bs->opaque; |
| 2924 | |
| 2925 | /* If has a flat extent and its underlying storage doesn't have zero init, |
| 2926 | * return 0. */ |
| 2927 | for (i = 0; i < s->num_extents; i++) { |
| 2928 | if (s->extents[i].flat) { |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 2929 | if (!bdrv_has_zero_init(s->extents[i].file->bs)) { |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2930 | return 0; |
| 2931 | } |
| 2932 | } |
| 2933 | } |
| 2934 | return 1; |
| 2935 | } |
| 2936 | |
Kevin Wolf | b7cfc7d | 2023-09-29 16:51:45 +0200 | [diff] [blame] | 2937 | static VmdkExtentInfo * GRAPH_RDLOCK vmdk_get_extent_info(VmdkExtent *extent) |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2938 | { |
Hanna Reitz | 456e751 | 2022-06-20 18:26:55 +0200 | [diff] [blame] | 2939 | VmdkExtentInfo *info = g_new0(VmdkExtentInfo, 1); |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2940 | |
Max Reitz | f30c66b | 2019-02-01 20:29:05 +0100 | [diff] [blame] | 2941 | bdrv_refresh_filename(extent->file->bs); |
Hanna Reitz | 456e751 | 2022-06-20 18:26:55 +0200 | [diff] [blame] | 2942 | *info = (VmdkExtentInfo){ |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 2943 | .filename = g_strdup(extent->file->bs->filename), |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2944 | .format = g_strdup(extent->type), |
| 2945 | .virtual_size = extent->sectors * BDRV_SECTOR_SIZE, |
| 2946 | .compressed = extent->compressed, |
| 2947 | .has_compressed = extent->compressed, |
| 2948 | .cluster_size = extent->cluster_sectors * BDRV_SECTOR_SIZE, |
| 2949 | .has_cluster_size = !extent->flat, |
| 2950 | }; |
| 2951 | |
| 2952 | return info; |
| 2953 | } |
| 2954 | |
Kevin Wolf | b9b10c3 | 2023-02-03 16:21:50 +0100 | [diff] [blame] | 2955 | static int coroutine_fn GRAPH_RDLOCK |
| 2956 | vmdk_co_check(BlockDriverState *bs, BdrvCheckResult *result, BdrvCheckMode fix) |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 2957 | { |
| 2958 | BDRVVmdkState *s = bs->opaque; |
| 2959 | VmdkExtent *extent = NULL; |
| 2960 | int64_t sector_num = 0; |
Paolo Bonzini | 1736239 | 2023-06-01 13:51:45 +0200 | [diff] [blame] | 2961 | int64_t total_sectors = bdrv_co_nb_sectors(bs); |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 2962 | int ret; |
| 2963 | uint64_t cluster_offset; |
| 2964 | |
| 2965 | if (fix) { |
| 2966 | return -ENOTSUP; |
| 2967 | } |
| 2968 | |
| 2969 | for (;;) { |
| 2970 | if (sector_num >= total_sectors) { |
| 2971 | return 0; |
| 2972 | } |
| 2973 | extent = find_extent(s, sector_num, extent); |
| 2974 | if (!extent) { |
| 2975 | fprintf(stderr, |
| 2976 | "ERROR: could not find extent for sector %" PRId64 "\n", |
| 2977 | sector_num); |
Fam Zheng | 0e51b9b | 2017-08-04 22:09:42 +0800 | [diff] [blame] | 2978 | ret = -EINVAL; |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 2979 | break; |
| 2980 | } |
| 2981 | ret = get_cluster_offset(bs, extent, NULL, |
| 2982 | sector_num << BDRV_SECTOR_BITS, |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 2983 | false, &cluster_offset, 0, 0); |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 2984 | if (ret == VMDK_ERROR) { |
| 2985 | fprintf(stderr, |
| 2986 | "ERROR: could not get cluster_offset for sector %" |
| 2987 | PRId64 "\n", sector_num); |
| 2988 | break; |
| 2989 | } |
Fam Zheng | 0e51b9b | 2017-08-04 22:09:42 +0800 | [diff] [blame] | 2990 | if (ret == VMDK_OK) { |
Paolo Bonzini | 0af02bd | 2023-06-01 13:51:44 +0200 | [diff] [blame] | 2991 | int64_t extent_len = bdrv_co_getlength(extent->file->bs); |
Fam Zheng | 0e51b9b | 2017-08-04 22:09:42 +0800 | [diff] [blame] | 2992 | if (extent_len < 0) { |
| 2993 | fprintf(stderr, |
| 2994 | "ERROR: could not get extent file length for sector %" |
| 2995 | PRId64 "\n", sector_num); |
| 2996 | ret = extent_len; |
| 2997 | break; |
| 2998 | } |
| 2999 | if (cluster_offset >= extent_len) { |
| 3000 | fprintf(stderr, |
| 3001 | "ERROR: cluster offset for sector %" |
| 3002 | PRId64 " points after EOF\n", sector_num); |
| 3003 | ret = -EINVAL; |
| 3004 | break; |
| 3005 | } |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 3006 | } |
| 3007 | sector_num += extent->cluster_sectors; |
| 3008 | } |
| 3009 | |
| 3010 | result->corruptions++; |
Fam Zheng | 0e51b9b | 2017-08-04 22:09:42 +0800 | [diff] [blame] | 3011 | return ret; |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 3012 | } |
| 3013 | |
Kevin Wolf | 3574499 | 2023-09-29 16:51:54 +0200 | [diff] [blame] | 3014 | static ImageInfoSpecific * GRAPH_RDLOCK |
| 3015 | vmdk_get_specific_info(BlockDriverState *bs, Error **errp) |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 3016 | { |
| 3017 | int i; |
| 3018 | BDRVVmdkState *s = bs->opaque; |
| 3019 | ImageInfoSpecific *spec_info = g_new0(ImageInfoSpecific, 1); |
Hanna Reitz | 456e751 | 2022-06-20 18:26:55 +0200 | [diff] [blame] | 3020 | VmdkExtentInfoList **tail; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 3021 | |
| 3022 | *spec_info = (ImageInfoSpecific){ |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 3023 | .type = IMAGE_INFO_SPECIFIC_KIND_VMDK, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 3024 | .u = { |
| 3025 | .vmdk.data = g_new0(ImageInfoSpecificVmdk, 1), |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 3026 | }, |
| 3027 | }; |
| 3028 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 3029 | *spec_info->u.vmdk.data = (ImageInfoSpecificVmdk) { |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 3030 | .create_type = g_strdup(s->create_type), |
| 3031 | .cid = s->cid, |
| 3032 | .parent_cid = s->parent_cid, |
| 3033 | }; |
| 3034 | |
Eric Blake | c3033fd | 2021-01-13 16:10:12 -0600 | [diff] [blame] | 3035 | tail = &spec_info->u.vmdk.data->extents; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 3036 | for (i = 0; i < s->num_extents; i++) { |
Eric Blake | c3033fd | 2021-01-13 16:10:12 -0600 | [diff] [blame] | 3037 | QAPI_LIST_APPEND(tail, vmdk_get_extent_info(&s->extents[i])); |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 3038 | } |
| 3039 | |
| 3040 | return spec_info; |
| 3041 | } |
| 3042 | |
Fam Zheng | 5f58330 | 2014-11-14 12:09:21 +0800 | [diff] [blame] | 3043 | static bool vmdk_extents_type_eq(const VmdkExtent *a, const VmdkExtent *b) |
| 3044 | { |
| 3045 | return a->flat == b->flat && |
| 3046 | a->compressed == b->compressed && |
| 3047 | (a->flat || a->cluster_sectors == b->cluster_sectors); |
| 3048 | } |
| 3049 | |
Emanuele Giuseppe Esposito | 3d47eb0 | 2023-01-13 21:42:08 +0100 | [diff] [blame] | 3050 | static int coroutine_fn |
| 3051 | vmdk_co_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) |
Fam Zheng | 74fe188 | 2014-05-06 21:08:45 +0800 | [diff] [blame] | 3052 | { |
| 3053 | int i; |
| 3054 | BDRVVmdkState *s = bs->opaque; |
| 3055 | assert(s->num_extents); |
Fam Zheng | 5f58330 | 2014-11-14 12:09:21 +0800 | [diff] [blame] | 3056 | |
| 3057 | /* See if we have multiple extents but they have different cases */ |
| 3058 | for (i = 1; i < s->num_extents; i++) { |
| 3059 | if (!vmdk_extents_type_eq(&s->extents[0], &s->extents[i])) { |
| 3060 | return -ENOTSUP; |
| 3061 | } |
| 3062 | } |
Fam Zheng | 74fe188 | 2014-05-06 21:08:45 +0800 | [diff] [blame] | 3063 | bdi->needs_compressed_writes = s->extents[0].compressed; |
| 3064 | if (!s->extents[0].flat) { |
| 3065 | bdi->cluster_size = s->extents[0].cluster_sectors << BDRV_SECTOR_BITS; |
| 3066 | } |
Fam Zheng | 74fe188 | 2014-05-06 21:08:45 +0800 | [diff] [blame] | 3067 | return 0; |
| 3068 | } |
| 3069 | |
Kevin Wolf | 004915a | 2023-10-27 17:53:26 +0200 | [diff] [blame] | 3070 | static void GRAPH_RDLOCK |
| 3071 | vmdk_gather_child_options(BlockDriverState *bs, QDict *target, |
| 3072 | bool backing_overridden) |
Max Reitz | abc521a | 2019-02-01 20:29:26 +0100 | [diff] [blame] | 3073 | { |
| 3074 | /* No children but file and backing can be explicitly specified (TODO) */ |
| 3075 | qdict_put(target, "file", |
| 3076 | qobject_ref(bs->file->bs->full_open_options)); |
| 3077 | |
| 3078 | if (backing_overridden) { |
| 3079 | if (bs->backing) { |
| 3080 | qdict_put(target, "backing", |
| 3081 | qobject_ref(bs->backing->bs->full_open_options)); |
| 3082 | } else { |
| 3083 | qdict_put_null(target, "backing"); |
| 3084 | } |
| 3085 | } |
| 3086 | } |
| 3087 | |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 3088 | static QemuOptsList vmdk_create_opts = { |
| 3089 | .name = "vmdk-create-opts", |
| 3090 | .head = QTAILQ_HEAD_INITIALIZER(vmdk_create_opts.head), |
| 3091 | .desc = { |
| 3092 | { |
| 3093 | .name = BLOCK_OPT_SIZE, |
| 3094 | .type = QEMU_OPT_SIZE, |
| 3095 | .help = "Virtual disk size" |
| 3096 | }, |
| 3097 | { |
| 3098 | .name = BLOCK_OPT_ADAPTER_TYPE, |
| 3099 | .type = QEMU_OPT_STRING, |
| 3100 | .help = "Virtual adapter type, can be one of " |
| 3101 | "ide (default), lsilogic, buslogic or legacyESX" |
| 3102 | }, |
| 3103 | { |
| 3104 | .name = BLOCK_OPT_BACKING_FILE, |
| 3105 | .type = QEMU_OPT_STRING, |
| 3106 | .help = "File name of a base image" |
| 3107 | }, |
| 3108 | { |
Eric Blake | d51a814 | 2020-07-06 15:39:48 -0500 | [diff] [blame] | 3109 | .name = BLOCK_OPT_BACKING_FMT, |
| 3110 | .type = QEMU_OPT_STRING, |
| 3111 | .help = "Must be 'vmdk' if present", |
| 3112 | }, |
| 3113 | { |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 3114 | .name = BLOCK_OPT_COMPAT6, |
| 3115 | .type = QEMU_OPT_BOOL, |
| 3116 | .help = "VMDK version 6 image", |
| 3117 | .def_value_str = "off" |
| 3118 | }, |
| 3119 | { |
Janne Karhunen | f249924 | 2016-05-03 02:43:30 -0700 | [diff] [blame] | 3120 | .name = BLOCK_OPT_HWVERSION, |
| 3121 | .type = QEMU_OPT_STRING, |
| 3122 | .help = "VMDK hardware version", |
| 3123 | .def_value_str = "undefined" |
| 3124 | }, |
| 3125 | { |
Thomas Weißschuh | f3d43df | 2021-09-13 15:04:19 +0200 | [diff] [blame] | 3126 | .name = BLOCK_OPT_TOOLSVERSION, |
| 3127 | .type = QEMU_OPT_STRING, |
| 3128 | .help = "VMware guest tools version", |
| 3129 | }, |
| 3130 | { |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 3131 | .name = BLOCK_OPT_SUBFMT, |
| 3132 | .type = QEMU_OPT_STRING, |
| 3133 | .help = |
| 3134 | "VMDK flat extent format, can be one of " |
| 3135 | "{monolithicSparse (default) | monolithicFlat | twoGbMaxExtentSparse | twoGbMaxExtentFlat | streamOptimized} " |
| 3136 | }, |
| 3137 | { |
| 3138 | .name = BLOCK_OPT_ZEROED_GRAIN, |
| 3139 | .type = QEMU_OPT_BOOL, |
| 3140 | .help = "Enable efficient zero writes " |
| 3141 | "using the zeroed-grain GTE feature" |
| 3142 | }, |
| 3143 | { /* end of list */ } |
| 3144 | } |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 3145 | }; |
| 3146 | |
Anthony Liguori | 5efa9d5 | 2009-05-09 17:03:42 -0500 | [diff] [blame] | 3147 | static BlockDriver bdrv_vmdk = { |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 3148 | .format_name = "vmdk", |
| 3149 | .instance_size = sizeof(BDRVVmdkState), |
| 3150 | .bdrv_probe = vmdk_probe, |
| 3151 | .bdrv_open = vmdk_open, |
Paolo Bonzini | 2fd6163 | 2018-03-01 17:36:19 +0100 | [diff] [blame] | 3152 | .bdrv_co_check = vmdk_co_check, |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 3153 | .bdrv_reopen_prepare = vmdk_reopen_prepare, |
Hanna Reitz | 6d17e28 | 2022-03-14 17:27:18 +0100 | [diff] [blame] | 3154 | .bdrv_reopen_commit = vmdk_reopen_commit, |
| 3155 | .bdrv_reopen_abort = vmdk_reopen_abort, |
Max Reitz | 69dca43 | 2020-05-13 13:05:39 +0200 | [diff] [blame] | 3156 | .bdrv_child_perm = bdrv_default_perms, |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 3157 | .bdrv_co_preadv = vmdk_co_preadv, |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 3158 | .bdrv_co_pwritev = vmdk_co_pwritev, |
Pavel Butsykin | b2c622d | 2016-07-22 11:17:45 +0300 | [diff] [blame] | 3159 | .bdrv_co_pwritev_compressed = vmdk_co_pwritev_compressed, |
Eric Blake | a620f2a | 2016-06-01 15:10:12 -0600 | [diff] [blame] | 3160 | .bdrv_co_pwrite_zeroes = vmdk_co_pwrite_zeroes, |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 3161 | .bdrv_close = vmdk_close, |
Stefan Hajnoczi | efc75e2 | 2018-01-18 13:43:45 +0100 | [diff] [blame] | 3162 | .bdrv_co_create_opts = vmdk_co_create_opts, |
Fam Zheng | 3015372 | 2018-05-15 23:36:32 +0800 | [diff] [blame] | 3163 | .bdrv_co_create = vmdk_co_create, |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 3164 | .bdrv_co_block_status = vmdk_co_block_status, |
Emanuele Giuseppe Esposito | 82618d7 | 2023-01-13 21:42:07 +0100 | [diff] [blame] | 3165 | .bdrv_co_get_allocated_file_size = vmdk_co_get_allocated_file_size, |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 3166 | .bdrv_has_zero_init = vmdk_has_zero_init, |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 3167 | .bdrv_get_specific_info = vmdk_get_specific_info, |
Kevin Wolf | d34682c | 2013-12-11 19:26:16 +0100 | [diff] [blame] | 3168 | .bdrv_refresh_limits = vmdk_refresh_limits, |
Emanuele Giuseppe Esposito | 3d47eb0 | 2023-01-13 21:42:08 +0100 | [diff] [blame] | 3169 | .bdrv_co_get_info = vmdk_co_get_info, |
Max Reitz | abc521a | 2019-02-01 20:29:26 +0100 | [diff] [blame] | 3170 | .bdrv_gather_child_options = vmdk_gather_child_options, |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 3171 | |
Max Reitz | d67066d | 2020-05-13 13:05:12 +0200 | [diff] [blame] | 3172 | .is_format = true, |
Kevin Wolf | 8ee79e7 | 2014-06-04 15:09:35 +0200 | [diff] [blame] | 3173 | .supports_backing = true, |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 3174 | .create_opts = &vmdk_create_opts, |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 3175 | }; |
Anthony Liguori | 5efa9d5 | 2009-05-09 17:03:42 -0500 | [diff] [blame] | 3176 | |
| 3177 | static void bdrv_vmdk_init(void) |
| 3178 | { |
| 3179 | bdrv_register(&bdrv_vmdk); |
| 3180 | } |
| 3181 | |
| 3182 | block_init(bdrv_vmdk_init); |