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" |
Markus Armbruster | cc7a8ea | 2015-03-17 17:22:46 +0100 | [diff] [blame] | 30 | #include "qapi/qmp/qerror.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" |
Juan Quintela | 795c40b | 2017-04-06 12:00:28 +0200 | [diff] [blame] | 35 | #include "migration/blocker.h" |
Veronia Bahaa | f348b6d | 2016-03-20 19:16:19 +0200 | [diff] [blame] | 36 | #include "qemu/cutils.h" |
Stefan Weil | 2923d34 | 2011-11-20 12:34:30 +0100 | [diff] [blame] | 37 | #include <zlib.h> |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 38 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 39 | #define VMDK3_MAGIC (('C' << 24) | ('O' << 16) | ('W' << 8) | 'D') |
| 40 | #define VMDK4_MAGIC (('K' << 24) | ('D' << 16) | ('M' << 8) | 'V') |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 41 | #define VMDK4_COMPRESSION_DEFLATE 1 |
Fam Zheng | 95b0aa4 | 2013-05-02 10:25:25 +0800 | [diff] [blame] | 42 | #define VMDK4_FLAG_NL_DETECT (1 << 0) |
Fam Zheng | bb45ded | 2011-08-12 23:19:34 +0800 | [diff] [blame] | 43 | #define VMDK4_FLAG_RGD (1 << 1) |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 44 | /* Zeroed-grain enable bit */ |
| 45 | #define VMDK4_FLAG_ZERO_GRAIN (1 << 2) |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 46 | #define VMDK4_FLAG_COMPRESS (1 << 16) |
| 47 | #define VMDK4_FLAG_MARKER (1 << 17) |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 48 | #define VMDK4_GD_AT_END 0xffffffffffffffffULL |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 49 | |
yuchenlin | a77672e | 2018-03-22 21:33:37 +0800 | [diff] [blame] | 50 | #define VMDK_EXTENT_MAX_SECTORS (1ULL << 32) |
| 51 | |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 52 | #define VMDK_GTE_ZEROED 0x1 |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 53 | |
| 54 | /* VMDK internal error codes */ |
| 55 | #define VMDK_OK 0 |
| 56 | #define VMDK_ERROR (-1) |
| 57 | /* Cluster not allocated */ |
| 58 | #define VMDK_UNALLOC (-2) |
| 59 | #define VMDK_ZEROED (-3) |
| 60 | |
Fam Zheng | 69e0b6d | 2013-05-02 10:25:24 +0800 | [diff] [blame] | 61 | #define BLOCK_OPT_ZEROED_GRAIN "zeroed_grain" |
| 62 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 63 | typedef struct { |
| 64 | uint32_t version; |
| 65 | uint32_t flags; |
| 66 | uint32_t disk_sectors; |
| 67 | uint32_t granularity; |
| 68 | uint32_t l1dir_offset; |
| 69 | uint32_t l1dir_size; |
| 70 | uint32_t file_sectors; |
| 71 | uint32_t cylinders; |
| 72 | uint32_t heads; |
| 73 | uint32_t sectors_per_track; |
Fam Zheng | 5d8caa5 | 2013-08-06 15:44:47 +0800 | [diff] [blame] | 74 | } QEMU_PACKED VMDK3Header; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 75 | |
| 76 | typedef struct { |
| 77 | uint32_t version; |
| 78 | uint32_t flags; |
Fam Zheng | e98768d | 2013-08-06 15:44:48 +0800 | [diff] [blame] | 79 | uint64_t capacity; |
| 80 | uint64_t granularity; |
| 81 | uint64_t desc_offset; |
| 82 | uint64_t desc_size; |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 83 | /* Number of GrainTableEntries per GrainTable */ |
| 84 | uint32_t num_gtes_per_gt; |
Fam Zheng | e98768d | 2013-08-06 15:44:48 +0800 | [diff] [blame] | 85 | uint64_t rgd_offset; |
| 86 | uint64_t gd_offset; |
| 87 | uint64_t grain_offset; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 88 | char filler[1]; |
| 89 | char check_bytes[4]; |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 90 | uint16_t compressAlgorithm; |
Stefan Weil | 541dc0d | 2011-08-31 12:38:01 +0200 | [diff] [blame] | 91 | } QEMU_PACKED VMDK4Header; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 92 | |
| 93 | #define L2_CACHE_SIZE 16 |
| 94 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 95 | typedef struct VmdkExtent { |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 96 | BdrvChild *file; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 97 | bool flat; |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 98 | bool compressed; |
| 99 | bool has_marker; |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 100 | bool has_zero_grain; |
| 101 | int version; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 102 | int64_t sectors; |
| 103 | int64_t end_sector; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 104 | int64_t flat_start_offset; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 105 | int64_t l1_table_offset; |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 106 | int64_t l1_backup_table_offset; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 107 | uint32_t *l1_table; |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 108 | uint32_t *l1_backup_table; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 109 | unsigned int l1_size; |
| 110 | uint32_t l1_entry_sectors; |
| 111 | |
| 112 | unsigned int l2_size; |
| 113 | uint32_t *l2_cache; |
| 114 | uint32_t l2_cache_offsets[L2_CACHE_SIZE]; |
| 115 | uint32_t l2_cache_counts[L2_CACHE_SIZE]; |
| 116 | |
Fam Zheng | 301c7d3 | 2013-09-23 17:18:29 +0800 | [diff] [blame] | 117 | int64_t cluster_sectors; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 118 | int64_t next_cluster_sector; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 119 | char *type; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 120 | } VmdkExtent; |
| 121 | |
| 122 | typedef struct BDRVVmdkState { |
Paolo Bonzini | 848c66e | 2011-10-20 13:16:21 +0200 | [diff] [blame] | 123 | CoMutex lock; |
Fam Zheng | e98768d | 2013-08-06 15:44:48 +0800 | [diff] [blame] | 124 | uint64_t desc_offset; |
Fam Zheng | 69b4d86 | 2011-07-12 19:56:34 +0800 | [diff] [blame] | 125 | bool cid_updated; |
Fam Zheng | c338b6a | 2013-10-18 13:17:19 +0800 | [diff] [blame] | 126 | bool cid_checked; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 127 | uint32_t cid; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 128 | uint32_t parent_cid; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 129 | int num_extents; |
| 130 | /* Extent array with num_extents entries, ascend ordered by address */ |
| 131 | VmdkExtent *extents; |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 132 | Error *migration_blocker; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 133 | char *create_type; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 134 | } BDRVVmdkState; |
| 135 | |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 136 | typedef struct VmdkMetaData { |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 137 | unsigned int l1_index; |
| 138 | unsigned int l2_index; |
| 139 | unsigned int l2_offset; |
| 140 | int valid; |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 141 | uint32_t *l2_cache_entry; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 142 | } VmdkMetaData; |
| 143 | |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 144 | typedef struct VmdkGrainMarker { |
| 145 | uint64_t lba; |
| 146 | uint32_t size; |
| 147 | uint8_t data[0]; |
Fam Zheng | 5d8caa5 | 2013-08-06 15:44:47 +0800 | [diff] [blame] | 148 | } QEMU_PACKED VmdkGrainMarker; |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 149 | |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 150 | enum { |
| 151 | MARKER_END_OF_STREAM = 0, |
| 152 | MARKER_GRAIN_TABLE = 1, |
| 153 | MARKER_GRAIN_DIRECTORY = 2, |
| 154 | MARKER_FOOTER = 3, |
| 155 | }; |
| 156 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 157 | static int vmdk_probe(const uint8_t *buf, int buf_size, const char *filename) |
| 158 | { |
| 159 | uint32_t magic; |
| 160 | |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 161 | if (buf_size < 4) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 162 | return 0; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 163 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 164 | magic = be32_to_cpu(*(uint32_t *)buf); |
| 165 | if (magic == VMDK3_MAGIC || |
Fam Zheng | 01fc99d | 2011-07-12 19:56:30 +0800 | [diff] [blame] | 166 | magic == VMDK4_MAGIC) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 167 | return 100; |
Fam Zheng | 01fc99d | 2011-07-12 19:56:30 +0800 | [diff] [blame] | 168 | } else { |
| 169 | const char *p = (const char *)buf; |
| 170 | const char *end = p + buf_size; |
| 171 | while (p < end) { |
| 172 | if (*p == '#') { |
| 173 | /* skip comment line */ |
| 174 | while (p < end && *p != '\n') { |
| 175 | p++; |
| 176 | } |
| 177 | p++; |
| 178 | continue; |
| 179 | } |
| 180 | if (*p == ' ') { |
| 181 | while (p < end && *p == ' ') { |
| 182 | p++; |
| 183 | } |
| 184 | /* skip '\r' if windows line endings used. */ |
| 185 | if (p < end && *p == '\r') { |
| 186 | p++; |
| 187 | } |
| 188 | /* only accept blank lines before 'version=' line */ |
| 189 | if (p == end || *p != '\n') { |
| 190 | return 0; |
| 191 | } |
| 192 | p++; |
| 193 | continue; |
| 194 | } |
| 195 | if (end - p >= strlen("version=X\n")) { |
| 196 | if (strncmp("version=1\n", p, strlen("version=1\n")) == 0 || |
| 197 | strncmp("version=2\n", p, strlen("version=2\n")) == 0) { |
| 198 | return 100; |
| 199 | } |
| 200 | } |
| 201 | if (end - p >= strlen("version=X\r\n")) { |
| 202 | if (strncmp("version=1\r\n", p, strlen("version=1\r\n")) == 0 || |
| 203 | strncmp("version=2\r\n", p, strlen("version=2\r\n")) == 0) { |
| 204 | return 100; |
| 205 | } |
| 206 | } |
| 207 | return 0; |
| 208 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 209 | return 0; |
Fam Zheng | 01fc99d | 2011-07-12 19:56:30 +0800 | [diff] [blame] | 210 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 211 | } |
| 212 | |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 213 | #define SECTOR_SIZE 512 |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 214 | #define DESC_SIZE (20 * SECTOR_SIZE) /* 20 sectors of 512 bytes each */ |
| 215 | #define BUF_SIZE 4096 |
| 216 | #define HEADER_SIZE 512 /* first sector of 512 bytes */ |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 217 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 218 | static void vmdk_free_extents(BlockDriverState *bs) |
| 219 | { |
| 220 | int i; |
| 221 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | b3c0bfb | 2011-09-19 10:26:42 +0800 | [diff] [blame] | 222 | VmdkExtent *e; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 223 | |
| 224 | for (i = 0; i < s->num_extents; i++) { |
Fam Zheng | b3c0bfb | 2011-09-19 10:26:42 +0800 | [diff] [blame] | 225 | e = &s->extents[i]; |
| 226 | g_free(e->l1_table); |
| 227 | g_free(e->l2_cache); |
| 228 | g_free(e->l1_backup_table); |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 229 | g_free(e->type); |
Kevin Wolf | 9a4f4c3 | 2015-06-16 14:19:22 +0200 | [diff] [blame] | 230 | if (e->file != bs->file) { |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 231 | bdrv_unref_child(bs, e->file); |
Fam Zheng | b3c0bfb | 2011-09-19 10:26:42 +0800 | [diff] [blame] | 232 | } |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 233 | } |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 234 | g_free(s->extents); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 235 | } |
| 236 | |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 237 | static void vmdk_free_last_extent(BlockDriverState *bs) |
| 238 | { |
| 239 | BDRVVmdkState *s = bs->opaque; |
| 240 | |
| 241 | if (s->num_extents == 0) { |
| 242 | return; |
| 243 | } |
| 244 | s->num_extents--; |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 245 | s->extents = g_renew(VmdkExtent, s->extents, s->num_extents); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 246 | } |
| 247 | |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 248 | /* Return -ve errno, or 0 on success and write CID into *pcid. */ |
| 249 | static int vmdk_read_cid(BlockDriverState *bs, int parent, uint32_t *pcid) |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 250 | { |
Fam Zheng | 5997c21 | 2016-03-08 16:24:35 +0800 | [diff] [blame] | 251 | char *desc; |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 252 | uint32_t cid; |
blueswir1 | 7ccfb2e | 2008-09-14 06:45:34 +0000 | [diff] [blame] | 253 | const char *p_name, *cid_str; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 254 | size_t cid_str_size; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 255 | BDRVVmdkState *s = bs->opaque; |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 256 | int ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 257 | |
Fam Zheng | 5997c21 | 2016-03-08 16:24:35 +0800 | [diff] [blame] | 258 | desc = g_malloc0(DESC_SIZE); |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 259 | ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 260 | if (ret < 0) { |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 261 | goto out; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 262 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 263 | |
| 264 | if (parent) { |
| 265 | cid_str = "parentCID"; |
| 266 | cid_str_size = sizeof("parentCID"); |
| 267 | } else { |
| 268 | cid_str = "CID"; |
| 269 | cid_str_size = sizeof("CID"); |
| 270 | } |
| 271 | |
Kevin Wolf | 93897b9 | 2011-10-26 12:25:52 +0200 | [diff] [blame] | 272 | desc[DESC_SIZE - 1] = '\0'; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 273 | p_name = strstr(desc, cid_str); |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 274 | if (p_name == NULL) { |
| 275 | ret = -EINVAL; |
| 276 | goto out; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 277 | } |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 278 | p_name += cid_str_size; |
| 279 | if (sscanf(p_name, "%" SCNx32, &cid) != 1) { |
| 280 | ret = -EINVAL; |
| 281 | goto out; |
| 282 | } |
| 283 | *pcid = cid; |
| 284 | ret = 0; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 285 | |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 286 | out: |
Fam Zheng | 5997c21 | 2016-03-08 16:24:35 +0800 | [diff] [blame] | 287 | g_free(desc); |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 288 | return ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | static int vmdk_write_cid(BlockDriverState *bs, uint32_t cid) |
| 292 | { |
Fam Zheng | 965415e | 2016-03-08 16:24:34 +0800 | [diff] [blame] | 293 | char *desc, *tmp_desc; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 294 | char *p_name, *tmp_str; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 295 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | 965415e | 2016-03-08 16:24:34 +0800 | [diff] [blame] | 296 | int ret = 0; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 297 | |
Fam Zheng | 965415e | 2016-03-08 16:24:34 +0800 | [diff] [blame] | 298 | desc = g_malloc0(DESC_SIZE); |
| 299 | tmp_desc = g_malloc0(DESC_SIZE); |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 300 | ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 301 | if (ret < 0) { |
Fam Zheng | 965415e | 2016-03-08 16:24:34 +0800 | [diff] [blame] | 302 | goto out; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 303 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 304 | |
Kevin Wolf | 93897b9 | 2011-10-26 12:25:52 +0200 | [diff] [blame] | 305 | desc[DESC_SIZE - 1] = '\0'; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 306 | tmp_str = strstr(desc, "parentCID"); |
Kevin Wolf | 93897b9 | 2011-10-26 12:25:52 +0200 | [diff] [blame] | 307 | if (tmp_str == NULL) { |
Fam Zheng | 965415e | 2016-03-08 16:24:34 +0800 | [diff] [blame] | 308 | ret = -EINVAL; |
| 309 | goto out; |
Kevin Wolf | 93897b9 | 2011-10-26 12:25:52 +0200 | [diff] [blame] | 310 | } |
| 311 | |
Fam Zheng | 965415e | 2016-03-08 16:24:34 +0800 | [diff] [blame] | 312 | pstrcpy(tmp_desc, DESC_SIZE, tmp_str); |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 313 | p_name = strstr(desc, "CID"); |
| 314 | if (p_name != NULL) { |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 315 | p_name += sizeof("CID"); |
Fam Zheng | 965415e | 2016-03-08 16:24:34 +0800 | [diff] [blame] | 316 | snprintf(p_name, DESC_SIZE - (p_name - desc), "%" PRIx32 "\n", cid); |
| 317 | pstrcat(desc, DESC_SIZE, tmp_desc); |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 318 | } |
| 319 | |
Kevin Wolf | d9ca2ea | 2016-06-20 20:09:15 +0200 | [diff] [blame] | 320 | ret = bdrv_pwrite_sync(bs->file, s->desc_offset, desc, DESC_SIZE); |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 321 | |
Fam Zheng | 965415e | 2016-03-08 16:24:34 +0800 | [diff] [blame] | 322 | out: |
| 323 | g_free(desc); |
| 324 | g_free(tmp_desc); |
| 325 | return ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 326 | } |
| 327 | |
| 328 | static int vmdk_is_cid_valid(BlockDriverState *bs) |
| 329 | { |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 330 | BDRVVmdkState *s = bs->opaque; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 331 | uint32_t cur_pcid; |
| 332 | |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 333 | if (!s->cid_checked && bs->backing) { |
| 334 | BlockDriverState *p_bs = bs->backing->bs; |
| 335 | |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 336 | if (vmdk_read_cid(p_bs, 0, &cur_pcid) != 0) { |
| 337 | /* read failure: report as not valid */ |
| 338 | return 0; |
| 339 | } |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 340 | if (s->parent_cid != cur_pcid) { |
| 341 | /* CID not valid */ |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 342 | return 0; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 343 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 344 | } |
Fam Zheng | c338b6a | 2013-10-18 13:17:19 +0800 | [diff] [blame] | 345 | s->cid_checked = true; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 346 | /* CID valid */ |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 347 | return 1; |
| 348 | } |
| 349 | |
Kevin Wolf | 67251a3 | 2015-04-09 18:54:04 +0200 | [diff] [blame] | 350 | /* We have nothing to do for VMDK reopen, stubs just return success */ |
Jeff Cody | 3897575 | 2012-09-20 15:13:30 -0400 | [diff] [blame] | 351 | static int vmdk_reopen_prepare(BDRVReopenState *state, |
| 352 | BlockReopenQueue *queue, Error **errp) |
| 353 | { |
Jeff Cody | 3897575 | 2012-09-20 15:13:30 -0400 | [diff] [blame] | 354 | assert(state != NULL); |
| 355 | assert(state->bs != NULL); |
Kevin Wolf | 67251a3 | 2015-04-09 18:54:04 +0200 | [diff] [blame] | 356 | return 0; |
Jeff Cody | 3897575 | 2012-09-20 15:13:30 -0400 | [diff] [blame] | 357 | } |
| 358 | |
Kevin Wolf | 9949f97 | 2010-04-16 21:07:19 +0200 | [diff] [blame] | 359 | static int vmdk_parent_open(BlockDriverState *bs) |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 360 | { |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 361 | char *p_name; |
Fam Zheng | 71968db | 2016-03-08 16:24:36 +0800 | [diff] [blame] | 362 | char *desc; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 363 | BDRVVmdkState *s = bs->opaque; |
Paolo Bonzini | 588b65a | 2011-10-20 13:16:19 +0200 | [diff] [blame] | 364 | int ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 365 | |
Fam Zheng | 71968db | 2016-03-08 16:24:36 +0800 | [diff] [blame] | 366 | desc = g_malloc0(DESC_SIZE + 1); |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 367 | ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); |
Paolo Bonzini | 588b65a | 2011-10-20 13:16:19 +0200 | [diff] [blame] | 368 | if (ret < 0) { |
Fam Zheng | 71968db | 2016-03-08 16:24:36 +0800 | [diff] [blame] | 369 | goto out; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 370 | } |
Fam Zheng | 71968db | 2016-03-08 16:24:36 +0800 | [diff] [blame] | 371 | ret = 0; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 372 | |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 373 | p_name = strstr(desc, "parentFileNameHint"); |
| 374 | if (p_name != NULL) { |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 375 | char *end_name; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 376 | |
| 377 | p_name += sizeof("parentFileNameHint") + 1; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 378 | end_name = strchr(p_name, '\"'); |
| 379 | if (end_name == NULL) { |
Fam Zheng | 71968db | 2016-03-08 16:24:36 +0800 | [diff] [blame] | 380 | ret = -EINVAL; |
| 381 | goto out; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 382 | } |
| 383 | if ((end_name - p_name) > sizeof(bs->backing_file) - 1) { |
Fam Zheng | 71968db | 2016-03-08 16:24:36 +0800 | [diff] [blame] | 384 | ret = -EINVAL; |
| 385 | goto out; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 386 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 387 | |
Kevin Wolf | b171271 | 2009-07-17 08:20:41 +0200 | [diff] [blame] | 388 | pstrcpy(bs->backing_file, end_name - p_name + 1, p_name); |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 389 | } |
| 390 | |
Fam Zheng | 71968db | 2016-03-08 16:24:36 +0800 | [diff] [blame] | 391 | out: |
| 392 | g_free(desc); |
| 393 | return ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 394 | } |
| 395 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 396 | /* Create and append extent to the extent array. Return the added VmdkExtent |
| 397 | * address. return NULL if allocation failed. */ |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 398 | static int vmdk_add_extent(BlockDriverState *bs, |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 399 | BdrvChild *file, bool flat, int64_t sectors, |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 400 | int64_t l1_offset, int64_t l1_backup_offset, |
| 401 | uint32_t l1_size, |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 402 | int l2_size, uint64_t cluster_sectors, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 403 | VmdkExtent **new_extent, |
| 404 | Error **errp) |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 405 | { |
| 406 | VmdkExtent *extent; |
| 407 | BDRVVmdkState *s = bs->opaque; |
Markus Armbruster | 0a156f7 | 2014-08-21 14:36:19 +0200 | [diff] [blame] | 408 | int64_t nb_sectors; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 409 | |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 410 | if (cluster_sectors > 0x200000) { |
| 411 | /* 0x200000 * 512Bytes = 1GB for one cluster is unrealistic */ |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 412 | error_setg(errp, "Invalid granularity, image may be corrupt"); |
| 413 | return -EFBIG; |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 414 | } |
Fam Zheng | b0651b8 | 2013-08-19 18:54:25 +0800 | [diff] [blame] | 415 | if (l1_size > 512 * 1024 * 1024) { |
| 416 | /* Although with big capacity and small l1_entry_sectors, we can get a |
| 417 | * big l1_size, we don't want unbounded value to allocate the table. |
| 418 | * Limit it to 512M, which is 16PB for default cluster and L2 table |
| 419 | * size */ |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 420 | error_setg(errp, "L1 size too big"); |
Fam Zheng | b0651b8 | 2013-08-19 18:54:25 +0800 | [diff] [blame] | 421 | return -EFBIG; |
| 422 | } |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 423 | |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 424 | nb_sectors = bdrv_nb_sectors(file->bs); |
Markus Armbruster | 0a156f7 | 2014-08-21 14:36:19 +0200 | [diff] [blame] | 425 | if (nb_sectors < 0) { |
| 426 | return nb_sectors; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 427 | } |
| 428 | |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 429 | s->extents = g_renew(VmdkExtent, s->extents, s->num_extents + 1); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 430 | extent = &s->extents[s->num_extents]; |
| 431 | s->num_extents++; |
| 432 | |
| 433 | memset(extent, 0, sizeof(VmdkExtent)); |
| 434 | extent->file = file; |
| 435 | extent->flat = flat; |
| 436 | extent->sectors = sectors; |
| 437 | extent->l1_table_offset = l1_offset; |
| 438 | extent->l1_backup_table_offset = l1_backup_offset; |
| 439 | extent->l1_size = l1_size; |
| 440 | extent->l1_entry_sectors = l2_size * cluster_sectors; |
| 441 | extent->l2_size = l2_size; |
Fam Zheng | 301c7d3 | 2013-09-23 17:18:29 +0800 | [diff] [blame] | 442 | extent->cluster_sectors = flat ? sectors : cluster_sectors; |
Markus Armbruster | 0a156f7 | 2014-08-21 14:36:19 +0200 | [diff] [blame] | 443 | extent->next_cluster_sector = ROUND_UP(nb_sectors, cluster_sectors); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 444 | |
| 445 | if (s->num_extents > 1) { |
| 446 | extent->end_sector = (*(extent - 1)).end_sector + extent->sectors; |
| 447 | } else { |
| 448 | extent->end_sector = extent->sectors; |
| 449 | } |
| 450 | bs->total_sectors = extent->end_sector; |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 451 | if (new_extent) { |
| 452 | *new_extent = extent; |
| 453 | } |
| 454 | return 0; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 455 | } |
| 456 | |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 457 | static int vmdk_init_tables(BlockDriverState *bs, VmdkExtent *extent, |
| 458 | Error **errp) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 459 | { |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 460 | int ret; |
Fam Zheng | 13c4941 | 2015-05-05 17:28:13 +0800 | [diff] [blame] | 461 | size_t l1_size; |
| 462 | int i; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 463 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 464 | /* read the L1 table */ |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 465 | l1_size = extent->l1_size * sizeof(uint32_t); |
Kevin Wolf | d6e5993 | 2014-05-20 13:56:27 +0200 | [diff] [blame] | 466 | extent->l1_table = g_try_malloc(l1_size); |
| 467 | if (l1_size && extent->l1_table == NULL) { |
| 468 | return -ENOMEM; |
| 469 | } |
| 470 | |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 471 | ret = bdrv_pread(extent->file, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 472 | extent->l1_table_offset, |
| 473 | extent->l1_table, |
| 474 | l1_size); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 475 | if (ret < 0) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 476 | error_setg_errno(errp, -ret, |
| 477 | "Could not read l1 table from extent '%s'", |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 478 | extent->file->bs->filename); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 479 | goto fail_l1; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 480 | } |
| 481 | for (i = 0; i < extent->l1_size; i++) { |
| 482 | le32_to_cpus(&extent->l1_table[i]); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 483 | } |
| 484 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 485 | if (extent->l1_backup_table_offset) { |
Kevin Wolf | d6e5993 | 2014-05-20 13:56:27 +0200 | [diff] [blame] | 486 | extent->l1_backup_table = g_try_malloc(l1_size); |
| 487 | if (l1_size && extent->l1_backup_table == NULL) { |
| 488 | ret = -ENOMEM; |
| 489 | goto fail_l1; |
| 490 | } |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 491 | ret = bdrv_pread(extent->file, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 492 | extent->l1_backup_table_offset, |
| 493 | extent->l1_backup_table, |
| 494 | l1_size); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 495 | if (ret < 0) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 496 | error_setg_errno(errp, -ret, |
| 497 | "Could not read l1 backup table from extent '%s'", |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 498 | extent->file->bs->filename); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 499 | goto fail_l1b; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 500 | } |
| 501 | for (i = 0; i < extent->l1_size; i++) { |
| 502 | le32_to_cpus(&extent->l1_backup_table[i]); |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 503 | } |
| 504 | } |
| 505 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 506 | extent->l2_cache = |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 507 | g_new(uint32_t, extent->l2_size * L2_CACHE_SIZE); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 508 | return 0; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 509 | fail_l1b: |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 510 | g_free(extent->l1_backup_table); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 511 | fail_l1: |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 512 | g_free(extent->l1_table); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 513 | return ret; |
| 514 | } |
| 515 | |
Fam Zheng | daac8fd | 2013-08-19 18:54:27 +0800 | [diff] [blame] | 516 | static int vmdk_open_vmfs_sparse(BlockDriverState *bs, |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 517 | BdrvChild *file, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 518 | int flags, Error **errp) |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 519 | { |
| 520 | int ret; |
| 521 | uint32_t magic; |
| 522 | VMDK3Header header; |
| 523 | VmdkExtent *extent; |
| 524 | |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 525 | ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header)); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 526 | if (ret < 0) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 527 | error_setg_errno(errp, -ret, |
| 528 | "Could not read header from file '%s'", |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 529 | file->bs->filename); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 530 | return ret; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 531 | } |
Fam Zheng | f6b61e5 | 2013-08-19 18:54:26 +0800 | [diff] [blame] | 532 | ret = vmdk_add_extent(bs, file, false, |
| 533 | le32_to_cpu(header.disk_sectors), |
Fam Zheng | 7237aec | 2015-04-27 22:23:01 +0800 | [diff] [blame] | 534 | (int64_t)le32_to_cpu(header.l1dir_offset) << 9, |
Fam Zheng | f6b61e5 | 2013-08-19 18:54:26 +0800 | [diff] [blame] | 535 | 0, |
| 536 | le32_to_cpu(header.l1dir_size), |
| 537 | 4096, |
| 538 | le32_to_cpu(header.granularity), |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 539 | &extent, |
| 540 | errp); |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 541 | if (ret < 0) { |
| 542 | return ret; |
| 543 | } |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 544 | ret = vmdk_init_tables(bs, extent, errp); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 545 | if (ret) { |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 546 | /* free extent allocated by vmdk_add_extent */ |
| 547 | vmdk_free_last_extent(bs); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 548 | } |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 549 | return ret; |
| 550 | } |
| 551 | |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 552 | static int vmdk_open_desc_file(BlockDriverState *bs, int flags, char *buf, |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 553 | QDict *options, Error **errp); |
Fam Zheng | f16f509 | 2011-08-12 23:19:33 +0800 | [diff] [blame] | 554 | |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 555 | 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] | 556 | { |
| 557 | int64_t size; |
| 558 | char *buf; |
| 559 | int ret; |
| 560 | |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 561 | size = bdrv_getlength(file->bs); |
Paolo Bonzini | a8842e6 | 2014-02-17 14:44:02 +0100 | [diff] [blame] | 562 | if (size < 0) { |
| 563 | error_setg_errno(errp, -size, "Could not access file"); |
| 564 | return NULL; |
| 565 | } |
| 566 | |
Fam Zheng | 03c3359 | 2014-12-04 07:28:32 +0800 | [diff] [blame] | 567 | if (size < 4) { |
| 568 | /* Both descriptor file and sparse image must be much larger than 4 |
| 569 | * bytes, also callers of vmdk_read_desc want to compare the first 4 |
| 570 | * bytes with VMDK4_MAGIC, let's error out if less is read. */ |
| 571 | error_setg(errp, "File is too small, not a valid image"); |
| 572 | return NULL; |
| 573 | } |
| 574 | |
Fam Zheng | 73b7bca | 2014-12-04 07:28:31 +0800 | [diff] [blame] | 575 | size = MIN(size, (1 << 20) - 1); /* avoid unbounded allocation */ |
| 576 | buf = g_malloc(size + 1); |
Paolo Bonzini | a8842e6 | 2014-02-17 14:44:02 +0100 | [diff] [blame] | 577 | |
| 578 | ret = bdrv_pread(file, desc_offset, buf, size); |
| 579 | if (ret < 0) { |
| 580 | error_setg_errno(errp, -ret, "Could not read from file"); |
| 581 | g_free(buf); |
| 582 | return NULL; |
| 583 | } |
Fam Zheng | 73b7bca | 2014-12-04 07:28:31 +0800 | [diff] [blame] | 584 | buf[ret] = 0; |
Paolo Bonzini | a8842e6 | 2014-02-17 14:44:02 +0100 | [diff] [blame] | 585 | |
| 586 | return buf; |
| 587 | } |
| 588 | |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 589 | static int vmdk_open_vmdk4(BlockDriverState *bs, |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 590 | BdrvChild *file, |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 591 | int flags, QDict *options, Error **errp) |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 592 | { |
| 593 | int ret; |
| 594 | uint32_t magic; |
| 595 | uint32_t l1_size, l1_entry_sectors; |
| 596 | VMDK4Header header; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 597 | VmdkExtent *extent; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 598 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | bb45ded | 2011-08-12 23:19:34 +0800 | [diff] [blame] | 599 | int64_t l1_backup_offset = 0; |
Fam Zheng | 3db1d98 | 2016-01-25 10:26:23 +0800 | [diff] [blame] | 600 | bool compressed; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 601 | |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 602 | ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header)); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 603 | if (ret < 0) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 604 | error_setg_errno(errp, -ret, |
| 605 | "Could not read header from file '%s'", |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 606 | file->bs->filename); |
Paolo Bonzini | 89ac848 | 2014-02-17 14:44:05 +0100 | [diff] [blame] | 607 | return -EINVAL; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 608 | } |
Stefan Hajnoczi | 5a394b9 | 2013-06-10 11:07:33 +0200 | [diff] [blame] | 609 | if (header.capacity == 0) { |
Fam Zheng | e98768d | 2013-08-06 15:44:48 +0800 | [diff] [blame] | 610 | uint64_t desc_offset = le64_to_cpu(header.desc_offset); |
Stefan Hajnoczi | 5a394b9 | 2013-06-10 11:07:33 +0200 | [diff] [blame] | 611 | if (desc_offset) { |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 612 | char *buf = vmdk_read_desc(file, desc_offset << 9, errp); |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 613 | if (!buf) { |
| 614 | return -EINVAL; |
| 615 | } |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 616 | ret = vmdk_open_desc_file(bs, flags, buf, options, errp); |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 617 | g_free(buf); |
| 618 | return ret; |
Stefan Hajnoczi | 5a394b9 | 2013-06-10 11:07:33 +0200 | [diff] [blame] | 619 | } |
Fam Zheng | f16f509 | 2011-08-12 23:19:33 +0800 | [diff] [blame] | 620 | } |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 621 | |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 622 | if (!s->create_type) { |
| 623 | s->create_type = g_strdup("monolithicSparse"); |
| 624 | } |
| 625 | |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 626 | if (le64_to_cpu(header.gd_offset) == VMDK4_GD_AT_END) { |
| 627 | /* |
| 628 | * The footer takes precedence over the header, so read it in. The |
| 629 | * footer starts at offset -1024 from the end: One sector for the |
| 630 | * footer, and another one for the end-of-stream marker. |
| 631 | */ |
| 632 | struct { |
| 633 | struct { |
| 634 | uint64_t val; |
| 635 | uint32_t size; |
| 636 | uint32_t type; |
| 637 | uint8_t pad[512 - 16]; |
| 638 | } QEMU_PACKED footer_marker; |
| 639 | |
| 640 | uint32_t magic; |
| 641 | VMDK4Header header; |
| 642 | uint8_t pad[512 - 4 - sizeof(VMDK4Header)]; |
| 643 | |
| 644 | struct { |
| 645 | uint64_t val; |
| 646 | uint32_t size; |
| 647 | uint32_t type; |
| 648 | uint8_t pad[512 - 16]; |
| 649 | } QEMU_PACKED eos_marker; |
| 650 | } QEMU_PACKED footer; |
| 651 | |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 652 | ret = bdrv_pread(file, |
Kevin Wolf | 9a4f4c3 | 2015-06-16 14:19:22 +0200 | [diff] [blame] | 653 | bs->file->bs->total_sectors * 512 - 1536, |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 654 | &footer, sizeof(footer)); |
| 655 | if (ret < 0) { |
Fam Zheng | d899d2e | 2014-12-04 07:28:34 +0800 | [diff] [blame] | 656 | error_setg_errno(errp, -ret, "Failed to read footer"); |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 657 | return ret; |
| 658 | } |
| 659 | |
| 660 | /* Some sanity checks for the footer */ |
| 661 | if (be32_to_cpu(footer.magic) != VMDK4_MAGIC || |
| 662 | le32_to_cpu(footer.footer_marker.size) != 0 || |
| 663 | le32_to_cpu(footer.footer_marker.type) != MARKER_FOOTER || |
| 664 | le64_to_cpu(footer.eos_marker.val) != 0 || |
| 665 | le32_to_cpu(footer.eos_marker.size) != 0 || |
| 666 | le32_to_cpu(footer.eos_marker.type) != MARKER_END_OF_STREAM) |
| 667 | { |
Fam Zheng | d899d2e | 2014-12-04 07:28:34 +0800 | [diff] [blame] | 668 | error_setg(errp, "Invalid footer"); |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 669 | return -EINVAL; |
| 670 | } |
| 671 | |
| 672 | header = footer.header; |
| 673 | } |
| 674 | |
Fam Zheng | 3db1d98 | 2016-01-25 10:26:23 +0800 | [diff] [blame] | 675 | compressed = |
| 676 | le16_to_cpu(header.compressAlgorithm) == VMDK4_COMPRESSION_DEFLATE; |
Fam Zheng | 509d39a | 2013-11-28 09:48:03 +0800 | [diff] [blame] | 677 | if (le32_to_cpu(header.version) > 3) { |
Max Reitz | a55448b | 2016-03-16 19:54:33 +0100 | [diff] [blame] | 678 | error_setg(errp, "Unsupported VMDK version %" PRIu32, |
| 679 | le32_to_cpu(header.version)); |
Fam Zheng | 96c51eb | 2013-06-13 11:21:29 +0800 | [diff] [blame] | 680 | return -ENOTSUP; |
Fam Zheng | 3db1d98 | 2016-01-25 10:26:23 +0800 | [diff] [blame] | 681 | } else if (le32_to_cpu(header.version) == 3 && (flags & BDRV_O_RDWR) && |
| 682 | !compressed) { |
Fam Zheng | 509d39a | 2013-11-28 09:48:03 +0800 | [diff] [blame] | 683 | /* VMware KB 2064959 explains that version 3 added support for |
| 684 | * persistent changed block tracking (CBT), and backup software can |
| 685 | * read it as version=1 if it doesn't care about the changed area |
| 686 | * information. So we are safe to enable read only. */ |
| 687 | error_setg(errp, "VMDK version 3 must be read only"); |
| 688 | return -EINVAL; |
Fam Zheng | 96c51eb | 2013-06-13 11:21:29 +0800 | [diff] [blame] | 689 | } |
| 690 | |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 691 | if (le32_to_cpu(header.num_gtes_per_gt) > 512) { |
Paolo Bonzini | 89ac848 | 2014-02-17 14:44:05 +0100 | [diff] [blame] | 692 | error_setg(errp, "L2 table size too big"); |
Fam Zheng | f8ce040 | 2013-08-06 15:44:52 +0800 | [diff] [blame] | 693 | return -EINVAL; |
| 694 | } |
| 695 | |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 696 | l1_entry_sectors = le32_to_cpu(header.num_gtes_per_gt) |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 697 | * le64_to_cpu(header.granularity); |
Stefan Weil | 75d1234 | 2012-02-25 14:01:42 +0100 | [diff] [blame] | 698 | if (l1_entry_sectors == 0) { |
Fam Zheng | d899d2e | 2014-12-04 07:28:34 +0800 | [diff] [blame] | 699 | error_setg(errp, "L1 entry size is invalid"); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 700 | return -EINVAL; |
| 701 | } |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 702 | l1_size = (le64_to_cpu(header.capacity) + l1_entry_sectors - 1) |
| 703 | / l1_entry_sectors; |
Fam Zheng | bb45ded | 2011-08-12 23:19:34 +0800 | [diff] [blame] | 704 | if (le32_to_cpu(header.flags) & VMDK4_FLAG_RGD) { |
| 705 | l1_backup_offset = le64_to_cpu(header.rgd_offset) << 9; |
| 706 | } |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 707 | if (bdrv_nb_sectors(file->bs) < le64_to_cpu(header.grain_offset)) { |
Fam Zheng | 4ab9dab | 2014-04-17 11:34:37 +0800 | [diff] [blame] | 708 | error_setg(errp, "File truncated, expecting at least %" PRId64 " bytes", |
| 709 | (int64_t)(le64_to_cpu(header.grain_offset) |
| 710 | * BDRV_SECTOR_SIZE)); |
Fam Zheng | 34ceed8 | 2014-01-21 15:07:43 +0800 | [diff] [blame] | 711 | return -EINVAL; |
| 712 | } |
| 713 | |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 714 | ret = vmdk_add_extent(bs, file, false, |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 715 | le64_to_cpu(header.capacity), |
| 716 | le64_to_cpu(header.gd_offset) << 9, |
Fam Zheng | bb45ded | 2011-08-12 23:19:34 +0800 | [diff] [blame] | 717 | l1_backup_offset, |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 718 | l1_size, |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 719 | le32_to_cpu(header.num_gtes_per_gt), |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 720 | le64_to_cpu(header.granularity), |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 721 | &extent, |
| 722 | errp); |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 723 | if (ret < 0) { |
| 724 | return ret; |
| 725 | } |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 726 | extent->compressed = |
| 727 | le16_to_cpu(header.compressAlgorithm) == VMDK4_COMPRESSION_DEFLATE; |
Fam Zheng | d8a7b06 | 2014-01-23 15:10:52 +0800 | [diff] [blame] | 728 | if (extent->compressed) { |
| 729 | g_free(s->create_type); |
| 730 | s->create_type = g_strdup("streamOptimized"); |
| 731 | } |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 732 | extent->has_marker = le32_to_cpu(header.flags) & VMDK4_FLAG_MARKER; |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 733 | extent->version = le32_to_cpu(header.version); |
| 734 | 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] | 735 | ret = vmdk_init_tables(bs, extent, errp); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 736 | if (ret) { |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 737 | /* free extent allocated by vmdk_add_extent */ |
| 738 | vmdk_free_last_extent(bs); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 739 | } |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 740 | return ret; |
| 741 | } |
| 742 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 743 | /* find an option value out of descriptor file */ |
| 744 | static int vmdk_parse_description(const char *desc, const char *opt_name, |
| 745 | char *buf, int buf_size) |
| 746 | { |
| 747 | char *opt_pos, *opt_end; |
| 748 | const char *end = desc + strlen(desc); |
| 749 | |
| 750 | opt_pos = strstr(desc, opt_name); |
| 751 | if (!opt_pos) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 752 | return VMDK_ERROR; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 753 | } |
| 754 | /* Skip "=\"" following opt_name */ |
| 755 | opt_pos += strlen(opt_name) + 2; |
| 756 | if (opt_pos >= end) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 757 | return VMDK_ERROR; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 758 | } |
| 759 | opt_end = opt_pos; |
| 760 | while (opt_end < end && *opt_end != '"') { |
| 761 | opt_end++; |
| 762 | } |
| 763 | if (opt_end == end || buf_size < opt_end - opt_pos + 1) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 764 | return VMDK_ERROR; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 765 | } |
| 766 | pstrcpy(buf, opt_end - opt_pos + 1, opt_pos); |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 767 | return VMDK_OK; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 768 | } |
| 769 | |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 770 | /* Open an extent file and append to bs array */ |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 771 | static int vmdk_open_sparse(BlockDriverState *bs, BdrvChild *file, int flags, |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 772 | char *buf, QDict *options, Error **errp) |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 773 | { |
| 774 | uint32_t magic; |
| 775 | |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 776 | magic = ldl_be_p(buf); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 777 | switch (magic) { |
| 778 | case VMDK3_MAGIC: |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 779 | return vmdk_open_vmfs_sparse(bs, file, flags, errp); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 780 | break; |
| 781 | case VMDK4_MAGIC: |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 782 | return vmdk_open_vmdk4(bs, file, flags, options, errp); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 783 | break; |
| 784 | default: |
Paolo Bonzini | 76abe40 | 2014-02-17 14:44:06 +0100 | [diff] [blame] | 785 | error_setg(errp, "Image not in VMDK format"); |
| 786 | return -EINVAL; |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 787 | break; |
| 788 | } |
| 789 | } |
| 790 | |
Markus Armbruster | e493769 | 2015-12-18 16:35:20 +0100 | [diff] [blame] | 791 | static const char *next_line(const char *s) |
| 792 | { |
| 793 | while (*s) { |
| 794 | if (*s == '\n') { |
| 795 | return s + 1; |
| 796 | } |
| 797 | s++; |
| 798 | } |
| 799 | return s; |
| 800 | } |
| 801 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 802 | static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 803 | const char *desc_file_path, QDict *options, |
| 804 | Error **errp) |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 805 | { |
| 806 | int ret; |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 807 | int matches; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 808 | char access[11]; |
| 809 | char type[11]; |
| 810 | char fname[512]; |
Markus Armbruster | d28d737 | 2015-12-18 16:35:21 +0100 | [diff] [blame] | 811 | const char *p, *np; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 812 | int64_t sectors = 0; |
| 813 | int64_t flat_offset; |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 814 | char *extent_path; |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 815 | BdrvChild *extent_file; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 816 | BDRVVmdkState *s = bs->opaque; |
| 817 | VmdkExtent *extent; |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 818 | char extent_opt_prefix[32]; |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 819 | Error *local_err = NULL; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 820 | |
Markus Armbruster | e493769 | 2015-12-18 16:35:20 +0100 | [diff] [blame] | 821 | for (p = desc; *p; p = next_line(p)) { |
Fam Zheng | 8a3e0bc | 2014-12-04 07:28:30 +0800 | [diff] [blame] | 822 | /* parse extent line in one of below formats: |
| 823 | * |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 824 | * RW [size in sectors] FLAT "file-name.vmdk" OFFSET |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 825 | * RW [size in sectors] SPARSE "file-name.vmdk" |
Fam Zheng | 8a3e0bc | 2014-12-04 07:28:30 +0800 | [diff] [blame] | 826 | * RW [size in sectors] VMFS "file-name.vmdk" |
| 827 | * RW [size in sectors] VMFSSPARSE "file-name.vmdk" |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 828 | */ |
| 829 | flat_offset = -1; |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 830 | matches = sscanf(p, "%10s %" SCNd64 " %10s \"%511[^\n\r\"]\" %" SCNd64, |
| 831 | access, §ors, type, fname, &flat_offset); |
| 832 | if (matches < 4 || strcmp(access, "RW")) { |
Markus Armbruster | e493769 | 2015-12-18 16:35:20 +0100 | [diff] [blame] | 833 | continue; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 834 | } else if (!strcmp(type, "FLAT")) { |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 835 | if (matches != 5 || flat_offset < 0) { |
Markus Armbruster | d28d737 | 2015-12-18 16:35:21 +0100 | [diff] [blame] | 836 | goto invalid; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 837 | } |
Fam Zheng | dbbcaa8 | 2013-10-18 15:07:33 +0800 | [diff] [blame] | 838 | } else if (!strcmp(type, "VMFS")) { |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 839 | if (matches == 4) { |
Fam Zheng | b47053b | 2013-12-09 13:24:36 +0800 | [diff] [blame] | 840 | flat_offset = 0; |
| 841 | } else { |
Markus Armbruster | d28d737 | 2015-12-18 16:35:21 +0100 | [diff] [blame] | 842 | goto invalid; |
Fam Zheng | b47053b | 2013-12-09 13:24:36 +0800 | [diff] [blame] | 843 | } |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 844 | } else if (matches != 4) { |
Markus Armbruster | d28d737 | 2015-12-18 16:35:21 +0100 | [diff] [blame] | 845 | goto invalid; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 846 | } |
| 847 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 848 | if (sectors <= 0 || |
Fam Zheng | daac8fd | 2013-08-19 18:54:27 +0800 | [diff] [blame] | 849 | (strcmp(type, "FLAT") && strcmp(type, "SPARSE") && |
Paolo Bonzini | 04d542c | 2013-08-19 18:54:28 +0800 | [diff] [blame] | 850 | strcmp(type, "VMFS") && strcmp(type, "VMFSSPARSE")) || |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 851 | (strcmp(access, "RW"))) { |
Markus Armbruster | e493769 | 2015-12-18 16:35:20 +0100 | [diff] [blame] | 852 | continue; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 853 | } |
| 854 | |
Max Reitz | 5c98415 | 2014-12-03 14:57:22 +0100 | [diff] [blame] | 855 | if (!path_is_absolute(fname) && !path_has_protocol(fname) && |
| 856 | !desc_file_path[0]) |
| 857 | { |
| 858 | error_setg(errp, "Cannot use relative extent paths with VMDK " |
Kevin Wolf | 9a4f4c3 | 2015-06-16 14:19:22 +0200 | [diff] [blame] | 859 | "descriptor file '%s'", bs->file->bs->filename); |
Max Reitz | 5c98415 | 2014-12-03 14:57:22 +0100 | [diff] [blame] | 860 | return -EINVAL; |
| 861 | } |
| 862 | |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 863 | extent_path = g_malloc0(PATH_MAX); |
Jeff Cody | a7be17b | 2015-02-10 13:22:56 -0500 | [diff] [blame] | 864 | path_combine(extent_path, PATH_MAX, desc_file_path, fname); |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 865 | |
| 866 | ret = snprintf(extent_opt_prefix, 32, "extents.%d", s->num_extents); |
| 867 | assert(ret < 32); |
| 868 | |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 869 | extent_file = bdrv_open_child(extent_path, options, extent_opt_prefix, |
| 870 | bs, &child_file, false, &local_err); |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 871 | g_free(extent_path); |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 872 | if (local_err) { |
| 873 | error_propagate(errp, local_err); |
| 874 | return -EINVAL; |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 875 | } |
| 876 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 877 | /* save to extents array */ |
Paolo Bonzini | 04d542c | 2013-08-19 18:54:28 +0800 | [diff] [blame] | 878 | if (!strcmp(type, "FLAT") || !strcmp(type, "VMFS")) { |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 879 | /* FLAT extent */ |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 880 | |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 881 | ret = vmdk_add_extent(bs, extent_file, true, sectors, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 882 | 0, 0, 0, 0, 0, &extent, errp); |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 883 | if (ret < 0) { |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 884 | bdrv_unref_child(bs, extent_file); |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 885 | return ret; |
| 886 | } |
Fam Zheng | f16f509 | 2011-08-12 23:19:33 +0800 | [diff] [blame] | 887 | extent->flat_start_offset = flat_offset << 9; |
Fam Zheng | daac8fd | 2013-08-19 18:54:27 +0800 | [diff] [blame] | 888 | } else if (!strcmp(type, "SPARSE") || !strcmp(type, "VMFSSPARSE")) { |
| 889 | /* SPARSE extent and VMFSSPARSE extent are both "COWD" sparse file*/ |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 890 | char *buf = vmdk_read_desc(extent_file, 0, errp); |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 891 | if (!buf) { |
| 892 | ret = -EINVAL; |
| 893 | } else { |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 894 | ret = vmdk_open_sparse(bs, extent_file, bs->open_flags, buf, |
| 895 | options, errp); |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 896 | } |
Stefan Hajnoczi | b6b1d31 | 2014-09-04 21:04:43 +0100 | [diff] [blame] | 897 | g_free(buf); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 898 | if (ret) { |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 899 | bdrv_unref_child(bs, extent_file); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 900 | return ret; |
| 901 | } |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 902 | extent = &s->extents[s->num_extents - 1]; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 903 | } else { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 904 | error_setg(errp, "Unsupported extent type '%s'", type); |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 905 | bdrv_unref_child(bs, extent_file); |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 906 | return -ENOTSUP; |
| 907 | } |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 908 | extent->type = g_strdup(type); |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 909 | } |
| 910 | return 0; |
Markus Armbruster | d28d737 | 2015-12-18 16:35:21 +0100 | [diff] [blame] | 911 | |
| 912 | invalid: |
| 913 | np = next_line(p); |
| 914 | assert(np != p); |
| 915 | if (np[-1] == '\n') { |
| 916 | np--; |
| 917 | } |
| 918 | error_setg(errp, "Invalid extent line: %.*s", (int)(np - p), p); |
| 919 | return -EINVAL; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 920 | } |
| 921 | |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 922 | static int vmdk_open_desc_file(BlockDriverState *bs, int flags, char *buf, |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 923 | QDict *options, Error **errp) |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 924 | { |
| 925 | int ret; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 926 | char ct[128]; |
| 927 | BDRVVmdkState *s = bs->opaque; |
| 928 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 929 | if (vmdk_parse_description(buf, "createType", ct, sizeof(ct))) { |
Paolo Bonzini | 76abe40 | 2014-02-17 14:44:06 +0100 | [diff] [blame] | 930 | error_setg(errp, "invalid VMDK image descriptor"); |
| 931 | ret = -EINVAL; |
Evgeny Budilovsky | 0bed087 | 2013-06-12 14:06:30 +0300 | [diff] [blame] | 932 | goto exit; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 933 | } |
Fam Zheng | 6398de5 | 2011-08-12 23:19:27 +0800 | [diff] [blame] | 934 | if (strcmp(ct, "monolithicFlat") && |
Paolo Bonzini | 04d542c | 2013-08-19 18:54:28 +0800 | [diff] [blame] | 935 | strcmp(ct, "vmfs") && |
Fam Zheng | daac8fd | 2013-08-19 18:54:27 +0800 | [diff] [blame] | 936 | strcmp(ct, "vmfsSparse") && |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 937 | strcmp(ct, "twoGbMaxExtentSparse") && |
Fam Zheng | 6398de5 | 2011-08-12 23:19:27 +0800 | [diff] [blame] | 938 | strcmp(ct, "twoGbMaxExtentFlat")) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 939 | error_setg(errp, "Unsupported image type '%s'", ct); |
Evgeny Budilovsky | 0bed087 | 2013-06-12 14:06:30 +0300 | [diff] [blame] | 940 | ret = -ENOTSUP; |
| 941 | goto exit; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 942 | } |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 943 | s->create_type = g_strdup(ct); |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 944 | s->desc_offset = 0; |
Kevin Wolf | 9a4f4c3 | 2015-06-16 14:19:22 +0200 | [diff] [blame] | 945 | ret = vmdk_parse_extents(buf, bs, bs->file->bs->exact_filename, options, |
| 946 | errp); |
Evgeny Budilovsky | 0bed087 | 2013-06-12 14:06:30 +0300 | [diff] [blame] | 947 | exit: |
Evgeny Budilovsky | 0bed087 | 2013-06-12 14:06:30 +0300 | [diff] [blame] | 948 | return ret; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 949 | } |
| 950 | |
Max Reitz | 015a103 | 2013-09-05 14:22:29 +0200 | [diff] [blame] | 951 | static int vmdk_open(BlockDriverState *bs, QDict *options, int flags, |
| 952 | Error **errp) |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 953 | { |
Fam Zheng | 9aeecbb | 2014-12-04 07:28:33 +0800 | [diff] [blame] | 954 | char *buf; |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 955 | int ret; |
| 956 | BDRVVmdkState *s = bs->opaque; |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 957 | uint32_t magic; |
Ashijeet Acharya | fe44dc9 | 2017-01-16 17:01:53 +0530 | [diff] [blame] | 958 | Error *local_err = NULL; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 959 | |
Kevin Wolf | 4e4bf5c | 2016-12-16 18:52:37 +0100 | [diff] [blame] | 960 | bs->file = bdrv_open_child(NULL, options, "file", bs, &child_file, |
| 961 | false, errp); |
| 962 | if (!bs->file) { |
| 963 | return -EINVAL; |
| 964 | } |
| 965 | |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 966 | buf = vmdk_read_desc(bs->file, 0, errp); |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 967 | if (!buf) { |
| 968 | return -EINVAL; |
| 969 | } |
| 970 | |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 971 | magic = ldl_be_p(buf); |
| 972 | switch (magic) { |
| 973 | case VMDK3_MAGIC: |
| 974 | case VMDK4_MAGIC: |
Kevin Wolf | 9a4f4c3 | 2015-06-16 14:19:22 +0200 | [diff] [blame] | 975 | ret = vmdk_open_sparse(bs, bs->file, flags, buf, options, |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 976 | errp); |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 977 | s->desc_offset = 0x200; |
| 978 | break; |
| 979 | default: |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 980 | ret = vmdk_open_desc_file(bs, flags, buf, options, errp); |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 981 | break; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 982 | } |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 983 | if (ret) { |
| 984 | goto fail; |
| 985 | } |
| 986 | |
Paolo Bonzini | bae0a0c | 2011-10-20 13:16:20 +0200 | [diff] [blame] | 987 | /* try to open parent images, if exist */ |
| 988 | ret = vmdk_parent_open(bs); |
| 989 | if (ret) { |
| 990 | goto fail; |
| 991 | } |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 992 | ret = vmdk_read_cid(bs, 0, &s->cid); |
| 993 | if (ret) { |
| 994 | goto fail; |
| 995 | } |
| 996 | ret = vmdk_read_cid(bs, 1, &s->parent_cid); |
| 997 | if (ret) { |
| 998 | goto fail; |
| 999 | } |
Paolo Bonzini | 848c66e | 2011-10-20 13:16:21 +0200 | [diff] [blame] | 1000 | qemu_co_mutex_init(&s->lock); |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 1001 | |
| 1002 | /* Disable migration when VMDK images are used */ |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 1003 | error_setg(&s->migration_blocker, "The vmdk format used by node '%s' " |
| 1004 | "does not support live migration", |
| 1005 | bdrv_get_device_or_node_name(bs)); |
Ashijeet Acharya | fe44dc9 | 2017-01-16 17:01:53 +0530 | [diff] [blame] | 1006 | ret = migrate_add_blocker(s->migration_blocker, &local_err); |
| 1007 | if (local_err) { |
| 1008 | error_propagate(errp, local_err); |
| 1009 | error_free(s->migration_blocker); |
| 1010 | goto fail; |
| 1011 | } |
| 1012 | |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 1013 | g_free(buf); |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 1014 | return 0; |
Paolo Bonzini | bae0a0c | 2011-10-20 13:16:20 +0200 | [diff] [blame] | 1015 | |
| 1016 | fail: |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 1017 | g_free(buf); |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 1018 | g_free(s->create_type); |
| 1019 | s->create_type = NULL; |
Paolo Bonzini | bae0a0c | 2011-10-20 13:16:20 +0200 | [diff] [blame] | 1020 | vmdk_free_extents(bs); |
| 1021 | return ret; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1022 | } |
| 1023 | |
Kevin Wolf | d34682c | 2013-12-11 19:26:16 +0100 | [diff] [blame] | 1024 | |
Kevin Wolf | 3baca89 | 2014-07-16 17:48:16 +0200 | [diff] [blame] | 1025 | static void vmdk_refresh_limits(BlockDriverState *bs, Error **errp) |
Kevin Wolf | d34682c | 2013-12-11 19:26:16 +0100 | [diff] [blame] | 1026 | { |
| 1027 | BDRVVmdkState *s = bs->opaque; |
| 1028 | int i; |
| 1029 | |
| 1030 | for (i = 0; i < s->num_extents; i++) { |
| 1031 | if (!s->extents[i].flat) { |
Eric Blake | cf081fc | 2016-06-01 15:10:02 -0600 | [diff] [blame] | 1032 | bs->bl.pwrite_zeroes_alignment = |
| 1033 | MAX(bs->bl.pwrite_zeroes_alignment, |
| 1034 | s->extents[i].cluster_sectors << BDRV_SECTOR_BITS); |
Kevin Wolf | d34682c | 2013-12-11 19:26:16 +0100 | [diff] [blame] | 1035 | } |
| 1036 | } |
Kevin Wolf | d34682c | 2013-12-11 19:26:16 +0100 | [diff] [blame] | 1037 | } |
| 1038 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1039 | /** |
| 1040 | * get_whole_cluster |
| 1041 | * |
| 1042 | * Copy backing file's cluster that covers @sector_num, otherwise write zero, |
| 1043 | * to the cluster at @cluster_sector_num. |
| 1044 | * |
| 1045 | * If @skip_start_sector < @skip_end_sector, the relative range |
| 1046 | * [@skip_start_sector, @skip_end_sector) is not copied or written, and leave |
| 1047 | * it for call to write user data in the request. |
| 1048 | */ |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1049 | static int get_whole_cluster(BlockDriverState *bs, |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1050 | VmdkExtent *extent, |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1051 | uint64_t cluster_offset, |
| 1052 | uint64_t offset, |
| 1053 | uint64_t skip_start_bytes, |
| 1054 | uint64_t skip_end_bytes) |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1055 | { |
Fam Zheng | bf81507 | 2013-08-06 15:44:54 +0800 | [diff] [blame] | 1056 | int ret = VMDK_OK; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1057 | int64_t cluster_bytes; |
| 1058 | uint8_t *whole_grain; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1059 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1060 | /* For COW, align request sector_num to cluster start */ |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1061 | cluster_bytes = extent->cluster_sectors << BDRV_SECTOR_BITS; |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1062 | offset = QEMU_ALIGN_DOWN(offset, cluster_bytes); |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1063 | whole_grain = qemu_blockalign(bs, cluster_bytes); |
| 1064 | |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 1065 | if (!bs->backing) { |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1066 | memset(whole_grain, 0, skip_start_bytes); |
| 1067 | memset(whole_grain + skip_end_bytes, 0, cluster_bytes - skip_end_bytes); |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1068 | } |
| 1069 | |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1070 | assert(skip_end_bytes <= cluster_bytes); |
Fam Zheng | 0e69c54 | 2011-07-12 19:56:29 +0800 | [diff] [blame] | 1071 | /* we will be here if it's first write on non-exist grain(cluster). |
| 1072 | * try to read from parent image, if exist */ |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 1073 | if (bs->backing && !vmdk_is_cid_valid(bs)) { |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1074 | ret = VMDK_ERROR; |
| 1075 | goto exit; |
| 1076 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1077 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1078 | /* Read backing data before skip range */ |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1079 | if (skip_start_bytes > 0) { |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 1080 | if (bs->backing) { |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1081 | /* qcow2 emits this on bs->file instead of bs->backing */ |
| 1082 | BLKDBG_EVENT(extent->file, BLKDBG_COW_READ); |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 1083 | ret = bdrv_pread(bs->backing, offset, whole_grain, |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1084 | skip_start_bytes); |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1085 | if (ret < 0) { |
| 1086 | ret = VMDK_ERROR; |
| 1087 | goto exit; |
| 1088 | } |
Kevin Wolf | c336500 | 2010-04-16 19:28:14 +0200 | [diff] [blame] | 1089 | } |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1090 | BLKDBG_EVENT(extent->file, BLKDBG_COW_WRITE); |
Kevin Wolf | d9ca2ea | 2016-06-20 20:09:15 +0200 | [diff] [blame] | 1091 | ret = bdrv_pwrite(extent->file, cluster_offset, whole_grain, |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1092 | skip_start_bytes); |
Kevin Wolf | c336500 | 2010-04-16 19:28:14 +0200 | [diff] [blame] | 1093 | if (ret < 0) { |
Fam Zheng | bf81507 | 2013-08-06 15:44:54 +0800 | [diff] [blame] | 1094 | ret = VMDK_ERROR; |
| 1095 | goto exit; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1096 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1097 | } |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1098 | /* Read backing data after skip range */ |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1099 | if (skip_end_bytes < cluster_bytes) { |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 1100 | if (bs->backing) { |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1101 | /* qcow2 emits this on bs->file instead of bs->backing */ |
| 1102 | BLKDBG_EVENT(extent->file, BLKDBG_COW_READ); |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 1103 | ret = bdrv_pread(bs->backing, offset + skip_end_bytes, |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1104 | whole_grain + skip_end_bytes, |
| 1105 | cluster_bytes - skip_end_bytes); |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1106 | if (ret < 0) { |
| 1107 | ret = VMDK_ERROR; |
| 1108 | goto exit; |
| 1109 | } |
| 1110 | } |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1111 | BLKDBG_EVENT(extent->file, BLKDBG_COW_WRITE); |
Kevin Wolf | d9ca2ea | 2016-06-20 20:09:15 +0200 | [diff] [blame] | 1112 | ret = bdrv_pwrite(extent->file, cluster_offset + skip_end_bytes, |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1113 | whole_grain + skip_end_bytes, |
| 1114 | cluster_bytes - skip_end_bytes); |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1115 | if (ret < 0) { |
| 1116 | ret = VMDK_ERROR; |
| 1117 | goto exit; |
| 1118 | } |
| 1119 | } |
| 1120 | |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1121 | ret = VMDK_OK; |
Fam Zheng | bf81507 | 2013-08-06 15:44:54 +0800 | [diff] [blame] | 1122 | exit: |
| 1123 | qemu_vfree(whole_grain); |
| 1124 | return ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1125 | } |
| 1126 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1127 | static int vmdk_L2update(VmdkExtent *extent, VmdkMetaData *m_data, |
| 1128 | uint32_t offset) |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1129 | { |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1130 | offset = cpu_to_le32(offset); |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1131 | /* update L2 table */ |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1132 | BLKDBG_EVENT(extent->file, BLKDBG_L2_UPDATE); |
Kevin Wolf | d9ca2ea | 2016-06-20 20:09:15 +0200 | [diff] [blame] | 1133 | if (bdrv_pwrite_sync(extent->file, |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1134 | ((int64_t)m_data->l2_offset * 512) |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1135 | + (m_data->l2_index * sizeof(offset)), |
Fam Zheng | e304e8e | 2013-05-02 10:25:26 +0800 | [diff] [blame] | 1136 | &offset, sizeof(offset)) < 0) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1137 | return VMDK_ERROR; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1138 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1139 | /* update backup L2 table */ |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1140 | if (extent->l1_backup_table_offset != 0) { |
| 1141 | m_data->l2_offset = extent->l1_backup_table[m_data->l1_index]; |
Kevin Wolf | d9ca2ea | 2016-06-20 20:09:15 +0200 | [diff] [blame] | 1142 | if (bdrv_pwrite_sync(extent->file, |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1143 | ((int64_t)m_data->l2_offset * 512) |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1144 | + (m_data->l2_index * sizeof(offset)), |
Fam Zheng | e304e8e | 2013-05-02 10:25:26 +0800 | [diff] [blame] | 1145 | &offset, sizeof(offset)) < 0) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1146 | return VMDK_ERROR; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1147 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1148 | } |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1149 | if (m_data->l2_cache_entry) { |
| 1150 | *m_data->l2_cache_entry = offset; |
| 1151 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1152 | |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1153 | return VMDK_OK; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1154 | } |
| 1155 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1156 | /** |
| 1157 | * get_cluster_offset |
| 1158 | * |
| 1159 | * Look up cluster offset in extent file by sector number, and store in |
| 1160 | * @cluster_offset. |
| 1161 | * |
| 1162 | * For flat extents, the start offset as parsed from the description file is |
| 1163 | * returned. |
| 1164 | * |
| 1165 | * For sparse extents, look up in L1, L2 table. If allocate is true, return an |
| 1166 | * offset for a new cluster and update L2 cache. If there is a backing file, |
| 1167 | * COW is done before returning; otherwise, zeroes are written to the allocated |
| 1168 | * cluster. Both COW and zero writing skips the sector range |
| 1169 | * [@skip_start_sector, @skip_end_sector) passed in by caller, because caller |
| 1170 | * has new data to write there. |
| 1171 | * |
| 1172 | * Returns: VMDK_OK if cluster exists and mapped in the image. |
| 1173 | * VMDK_UNALLOC if cluster is not mapped and @allocate is false. |
| 1174 | * VMDK_ERROR if failed. |
| 1175 | */ |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1176 | static int get_cluster_offset(BlockDriverState *bs, |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1177 | VmdkExtent *extent, |
| 1178 | VmdkMetaData *m_data, |
| 1179 | uint64_t offset, |
| 1180 | bool allocate, |
| 1181 | uint64_t *cluster_offset, |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1182 | uint64_t skip_start_bytes, |
| 1183 | uint64_t skip_end_bytes) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1184 | { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1185 | unsigned int l1_index, l2_offset, l2_index; |
| 1186 | int min_index, i, j; |
Fam Zheng | e304e8e | 2013-05-02 10:25:26 +0800 | [diff] [blame] | 1187 | uint32_t min_count, *l2_table; |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1188 | bool zeroed = false; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1189 | int64_t ret; |
Fam Zheng | d1319b0 | 2014-09-23 09:56:21 +0800 | [diff] [blame] | 1190 | int64_t cluster_sector; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1191 | |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1192 | if (m_data) { |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1193 | m_data->valid = 0; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1194 | } |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1195 | if (extent->flat) { |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1196 | *cluster_offset = extent->flat_start_offset; |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1197 | return VMDK_OK; |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1198 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1199 | |
Fam Zheng | 6398de5 | 2011-08-12 23:19:27 +0800 | [diff] [blame] | 1200 | offset -= (extent->end_sector - extent->sectors) * SECTOR_SIZE; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1201 | l1_index = (offset >> 9) / extent->l1_entry_sectors; |
| 1202 | if (l1_index >= extent->l1_size) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1203 | return VMDK_ERROR; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1204 | } |
| 1205 | l2_offset = extent->l1_table[l1_index]; |
| 1206 | if (!l2_offset) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1207 | return VMDK_UNALLOC; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1208 | } |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1209 | for (i = 0; i < L2_CACHE_SIZE; i++) { |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1210 | if (l2_offset == extent->l2_cache_offsets[i]) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1211 | /* increment the hit count */ |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1212 | if (++extent->l2_cache_counts[i] == 0xffffffff) { |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1213 | for (j = 0; j < L2_CACHE_SIZE; j++) { |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1214 | extent->l2_cache_counts[j] >>= 1; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1215 | } |
| 1216 | } |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1217 | l2_table = extent->l2_cache + (i * extent->l2_size); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1218 | goto found; |
| 1219 | } |
| 1220 | } |
| 1221 | /* not found: load a new entry in the least used one */ |
| 1222 | min_index = 0; |
| 1223 | min_count = 0xffffffff; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1224 | for (i = 0; i < L2_CACHE_SIZE; i++) { |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1225 | if (extent->l2_cache_counts[i] < min_count) { |
| 1226 | min_count = extent->l2_cache_counts[i]; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1227 | min_index = i; |
| 1228 | } |
| 1229 | } |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1230 | l2_table = extent->l2_cache + (min_index * extent->l2_size); |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1231 | BLKDBG_EVENT(extent->file, BLKDBG_L2_LOAD); |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 1232 | if (bdrv_pread(extent->file, |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1233 | (int64_t)l2_offset * 512, |
| 1234 | l2_table, |
| 1235 | extent->l2_size * sizeof(uint32_t) |
| 1236 | ) != extent->l2_size * sizeof(uint32_t)) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1237 | return VMDK_ERROR; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1238 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1239 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1240 | extent->l2_cache_offsets[min_index] = l2_offset; |
| 1241 | extent->l2_cache_counts[min_index] = 1; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1242 | found: |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1243 | l2_index = ((offset >> 9) / extent->cluster_sectors) % extent->l2_size; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1244 | cluster_sector = le32_to_cpu(l2_table[l2_index]); |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1245 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1246 | if (extent->has_zero_grain && cluster_sector == VMDK_GTE_ZEROED) { |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1247 | zeroed = true; |
| 1248 | } |
| 1249 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1250 | if (!cluster_sector || zeroed) { |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1251 | if (!allocate) { |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1252 | return zeroed ? VMDK_ZEROED : VMDK_UNALLOC; |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1253 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1254 | |
yuchenlin | a77672e | 2018-03-22 21:33:37 +0800 | [diff] [blame] | 1255 | if (extent->next_cluster_sector >= VMDK_EXTENT_MAX_SECTORS) { |
| 1256 | return VMDK_ERROR; |
| 1257 | } |
| 1258 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1259 | cluster_sector = extent->next_cluster_sector; |
| 1260 | extent->next_cluster_sector += extent->cluster_sectors; |
Kevin Wolf | 9949f97 | 2010-04-16 21:07:19 +0200 | [diff] [blame] | 1261 | |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1262 | /* First of all we write grain itself, to avoid race condition |
| 1263 | * that may to corrupt the image. |
| 1264 | * This problem may occur because of insufficient space on host disk |
| 1265 | * or inappropriate VM shutdown. |
| 1266 | */ |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1267 | ret = get_whole_cluster(bs, extent, cluster_sector * BDRV_SECTOR_SIZE, |
| 1268 | offset, skip_start_bytes, skip_end_bytes); |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1269 | if (ret) { |
| 1270 | return ret; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1271 | } |
Reda Sallahi | 524089b | 2016-07-07 10:42:49 +0200 | [diff] [blame] | 1272 | if (m_data) { |
| 1273 | m_data->valid = 1; |
| 1274 | m_data->l1_index = l1_index; |
| 1275 | m_data->l2_index = l2_index; |
| 1276 | m_data->l2_offset = l2_offset; |
| 1277 | m_data->l2_cache_entry = &l2_table[l2_index]; |
| 1278 | } |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 1279 | } |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1280 | *cluster_offset = cluster_sector << BDRV_SECTOR_BITS; |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1281 | return VMDK_OK; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1282 | } |
| 1283 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1284 | static VmdkExtent *find_extent(BDRVVmdkState *s, |
| 1285 | int64_t sector_num, VmdkExtent *start_hint) |
| 1286 | { |
| 1287 | VmdkExtent *extent = start_hint; |
| 1288 | |
| 1289 | if (!extent) { |
| 1290 | extent = &s->extents[0]; |
| 1291 | } |
| 1292 | while (extent < &s->extents[s->num_extents]) { |
| 1293 | if (sector_num < extent->end_sector) { |
| 1294 | return extent; |
| 1295 | } |
| 1296 | extent++; |
| 1297 | } |
| 1298 | return NULL; |
| 1299 | } |
| 1300 | |
Kevin Wolf | a844a2b | 2016-04-25 17:14:48 +0200 | [diff] [blame] | 1301 | static inline uint64_t vmdk_find_offset_in_cluster(VmdkExtent *extent, |
| 1302 | int64_t offset) |
| 1303 | { |
Eduardo Habkost | 9be3859 | 2016-06-13 18:57:58 -0300 | [diff] [blame] | 1304 | uint64_t extent_begin_offset, extent_relative_offset; |
Kevin Wolf | a844a2b | 2016-04-25 17:14:48 +0200 | [diff] [blame] | 1305 | uint64_t cluster_size = extent->cluster_sectors * BDRV_SECTOR_SIZE; |
| 1306 | |
| 1307 | extent_begin_offset = |
| 1308 | (extent->end_sector - extent->sectors) * BDRV_SECTOR_SIZE; |
| 1309 | extent_relative_offset = offset - extent_begin_offset; |
Eduardo Habkost | 9be3859 | 2016-06-13 18:57:58 -0300 | [diff] [blame] | 1310 | return extent_relative_offset % cluster_size; |
Kevin Wolf | a844a2b | 2016-04-25 17:14:48 +0200 | [diff] [blame] | 1311 | } |
| 1312 | |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1313 | static int coroutine_fn vmdk_co_block_status(BlockDriverState *bs, |
| 1314 | bool want_zero, |
| 1315 | int64_t offset, int64_t bytes, |
| 1316 | int64_t *pnum, int64_t *map, |
| 1317 | BlockDriverState **file) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1318 | { |
| 1319 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1320 | int64_t index_in_cluster, n, ret; |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1321 | uint64_t cluster_offset; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1322 | VmdkExtent *extent; |
| 1323 | |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1324 | extent = find_extent(s, offset >> BDRV_SECTOR_BITS, NULL); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1325 | if (!extent) { |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1326 | return -EIO; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1327 | } |
Stefan Hajnoczi | f8a2e5e | 2011-11-14 12:44:21 +0000 | [diff] [blame] | 1328 | qemu_co_mutex_lock(&s->lock); |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1329 | ret = get_cluster_offset(bs, extent, NULL, offset, false, &cluster_offset, |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1330 | 0, 0); |
Stefan Hajnoczi | f8a2e5e | 2011-11-14 12:44:21 +0000 | [diff] [blame] | 1331 | qemu_co_mutex_unlock(&s->lock); |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1332 | |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1333 | index_in_cluster = vmdk_find_offset_in_cluster(extent, offset); |
Paolo Bonzini | 4bc74be | 2013-09-04 19:00:30 +0200 | [diff] [blame] | 1334 | switch (ret) { |
| 1335 | case VMDK_ERROR: |
| 1336 | ret = -EIO; |
| 1337 | break; |
| 1338 | case VMDK_UNALLOC: |
| 1339 | ret = 0; |
| 1340 | break; |
| 1341 | case VMDK_ZEROED: |
| 1342 | ret = BDRV_BLOCK_ZERO; |
| 1343 | break; |
| 1344 | case VMDK_OK: |
| 1345 | ret = BDRV_BLOCK_DATA; |
Fam Zheng | e0f100f | 2016-01-26 11:58:59 +0800 | [diff] [blame] | 1346 | if (!extent->compressed) { |
Fam Zheng | d0a18f1 | 2016-01-26 11:58:58 +0800 | [diff] [blame] | 1347 | ret |= BDRV_BLOCK_OFFSET_VALID; |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1348 | *map = cluster_offset + index_in_cluster; |
Paolo Bonzini | 4bc74be | 2013-09-04 19:00:30 +0200 | [diff] [blame] | 1349 | } |
Fam Zheng | e0f100f | 2016-01-26 11:58:59 +0800 | [diff] [blame] | 1350 | *file = extent->file->bs; |
Paolo Bonzini | 4bc74be | 2013-09-04 19:00:30 +0200 | [diff] [blame] | 1351 | break; |
| 1352 | } |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1353 | |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 1354 | n = extent->cluster_sectors * BDRV_SECTOR_SIZE - index_in_cluster; |
| 1355 | *pnum = MIN(n, bytes); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1356 | return ret; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1357 | } |
| 1358 | |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1359 | static int vmdk_write_extent(VmdkExtent *extent, int64_t cluster_offset, |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1360 | int64_t offset_in_cluster, QEMUIOVector *qiov, |
| 1361 | uint64_t qiov_offset, uint64_t n_bytes, |
| 1362 | uint64_t offset) |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1363 | { |
| 1364 | int ret; |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1365 | VmdkGrainMarker *data = NULL; |
| 1366 | uLongf buf_len; |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1367 | QEMUIOVector local_qiov; |
| 1368 | struct iovec iov; |
Fam Zheng | 5e82a31 | 2015-05-06 20:23:46 +0800 | [diff] [blame] | 1369 | int64_t write_offset; |
| 1370 | int64_t write_end_sector; |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1371 | |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1372 | if (extent->compressed) { |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1373 | void *compressed_data; |
| 1374 | |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1375 | if (!extent->has_marker) { |
| 1376 | ret = -EINVAL; |
| 1377 | goto out; |
| 1378 | } |
| 1379 | buf_len = (extent->cluster_sectors << 9) * 2; |
| 1380 | data = g_malloc(buf_len + sizeof(VmdkGrainMarker)); |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1381 | |
| 1382 | compressed_data = g_malloc(n_bytes); |
| 1383 | qemu_iovec_to_buf(qiov, qiov_offset, compressed_data, n_bytes); |
| 1384 | ret = compress(data->data, &buf_len, compressed_data, n_bytes); |
| 1385 | g_free(compressed_data); |
| 1386 | |
| 1387 | if (ret != Z_OK || buf_len == 0) { |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1388 | ret = -EINVAL; |
| 1389 | goto out; |
| 1390 | } |
Fam Zheng | 5e82a31 | 2015-05-06 20:23:46 +0800 | [diff] [blame] | 1391 | |
QingFeng Hao | 4545d4f | 2016-12-16 06:20:40 +0100 | [diff] [blame] | 1392 | data->lba = cpu_to_le64(offset >> BDRV_SECTOR_BITS); |
| 1393 | data->size = cpu_to_le32(buf_len); |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1394 | |
| 1395 | n_bytes = buf_len + sizeof(VmdkGrainMarker); |
| 1396 | iov = (struct iovec) { |
| 1397 | .iov_base = data, |
| 1398 | .iov_len = n_bytes, |
| 1399 | }; |
| 1400 | qemu_iovec_init_external(&local_qiov, &iov, 1); |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1401 | |
| 1402 | BLKDBG_EVENT(extent->file, BLKDBG_WRITE_COMPRESSED); |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1403 | } else { |
| 1404 | qemu_iovec_init(&local_qiov, qiov->niov); |
| 1405 | qemu_iovec_concat(&local_qiov, qiov, qiov_offset, n_bytes); |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1406 | |
| 1407 | BLKDBG_EVENT(extent->file, BLKDBG_WRITE_AIO); |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1408 | } |
| 1409 | |
Max Reitz | 3c36357 | 2017-11-23 03:08:16 +0100 | [diff] [blame] | 1410 | write_offset = cluster_offset + offset_in_cluster; |
Kevin Wolf | a03ef88 | 2016-06-20 21:31:46 +0200 | [diff] [blame] | 1411 | ret = bdrv_co_pwritev(extent->file, write_offset, n_bytes, |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1412 | &local_qiov, 0); |
| 1413 | |
| 1414 | 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] | 1415 | |
Radoslav Gerganov | 3efffc3 | 2015-09-10 10:53:14 +0300 | [diff] [blame] | 1416 | if (extent->compressed) { |
| 1417 | extent->next_cluster_sector = write_end_sector; |
| 1418 | } else { |
| 1419 | extent->next_cluster_sector = MAX(extent->next_cluster_sector, |
| 1420 | write_end_sector); |
| 1421 | } |
Fam Zheng | 5e82a31 | 2015-05-06 20:23:46 +0800 | [diff] [blame] | 1422 | |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1423 | if (ret < 0) { |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1424 | goto out; |
| 1425 | } |
| 1426 | ret = 0; |
| 1427 | out: |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1428 | g_free(data); |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1429 | if (!extent->compressed) { |
| 1430 | qemu_iovec_destroy(&local_qiov); |
| 1431 | } |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1432 | return ret; |
| 1433 | } |
| 1434 | |
| 1435 | static int vmdk_read_extent(VmdkExtent *extent, int64_t cluster_offset, |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1436 | int64_t offset_in_cluster, QEMUIOVector *qiov, |
| 1437 | int bytes) |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1438 | { |
| 1439 | int ret; |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1440 | int cluster_bytes, buf_bytes; |
| 1441 | uint8_t *cluster_buf, *compressed_data; |
| 1442 | uint8_t *uncomp_buf; |
| 1443 | uint32_t data_len; |
| 1444 | VmdkGrainMarker *marker; |
| 1445 | uLongf buf_len; |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1446 | |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1447 | |
| 1448 | if (!extent->compressed) { |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1449 | BLKDBG_EVENT(extent->file, BLKDBG_READ_AIO); |
Kevin Wolf | a03ef88 | 2016-06-20 21:31:46 +0200 | [diff] [blame] | 1450 | ret = bdrv_co_preadv(extent->file, |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1451 | cluster_offset + offset_in_cluster, bytes, |
| 1452 | qiov, 0); |
| 1453 | if (ret < 0) { |
| 1454 | return ret; |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1455 | } |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1456 | return 0; |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1457 | } |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1458 | cluster_bytes = extent->cluster_sectors * 512; |
| 1459 | /* Read two clusters in case GrainMarker + compressed data > one cluster */ |
| 1460 | buf_bytes = cluster_bytes * 2; |
| 1461 | cluster_buf = g_malloc(buf_bytes); |
| 1462 | uncomp_buf = g_malloc(cluster_bytes); |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1463 | BLKDBG_EVENT(extent->file, BLKDBG_READ_COMPRESSED); |
Kevin Wolf | cf2ab8f | 2016-06-20 18:24:02 +0200 | [diff] [blame] | 1464 | ret = bdrv_pread(extent->file, |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1465 | cluster_offset, |
| 1466 | cluster_buf, buf_bytes); |
| 1467 | if (ret < 0) { |
| 1468 | goto out; |
| 1469 | } |
| 1470 | compressed_data = cluster_buf; |
| 1471 | buf_len = cluster_bytes; |
| 1472 | data_len = cluster_bytes; |
| 1473 | if (extent->has_marker) { |
| 1474 | marker = (VmdkGrainMarker *)cluster_buf; |
| 1475 | compressed_data = marker->data; |
| 1476 | data_len = le32_to_cpu(marker->size); |
| 1477 | } |
| 1478 | if (!data_len || data_len > buf_bytes) { |
| 1479 | ret = -EINVAL; |
| 1480 | goto out; |
| 1481 | } |
| 1482 | ret = uncompress(uncomp_buf, &buf_len, compressed_data, data_len); |
| 1483 | if (ret != Z_OK) { |
| 1484 | ret = -EINVAL; |
| 1485 | goto out; |
| 1486 | |
| 1487 | } |
| 1488 | if (offset_in_cluster < 0 || |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1489 | offset_in_cluster + bytes > buf_len) { |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1490 | ret = -EINVAL; |
| 1491 | goto out; |
| 1492 | } |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1493 | qemu_iovec_from_buf(qiov, 0, uncomp_buf + offset_in_cluster, bytes); |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1494 | ret = 0; |
| 1495 | |
| 1496 | out: |
| 1497 | g_free(uncomp_buf); |
| 1498 | g_free(cluster_buf); |
| 1499 | return ret; |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1500 | } |
| 1501 | |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1502 | static int coroutine_fn |
| 1503 | vmdk_co_preadv(BlockDriverState *bs, uint64_t offset, uint64_t bytes, |
| 1504 | QEMUIOVector *qiov, int flags) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1505 | { |
| 1506 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1507 | int ret; |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1508 | uint64_t n_bytes, offset_in_cluster; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1509 | VmdkExtent *extent = NULL; |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1510 | QEMUIOVector local_qiov; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1511 | uint64_t cluster_offset; |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1512 | uint64_t bytes_done = 0; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1513 | |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1514 | qemu_iovec_init(&local_qiov, qiov->niov); |
| 1515 | qemu_co_mutex_lock(&s->lock); |
| 1516 | |
| 1517 | while (bytes > 0) { |
| 1518 | extent = find_extent(s, offset >> BDRV_SECTOR_BITS, extent); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1519 | if (!extent) { |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1520 | ret = -EIO; |
| 1521 | goto fail; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1522 | } |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1523 | ret = get_cluster_offset(bs, extent, NULL, |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1524 | offset, false, &cluster_offset, 0, 0); |
| 1525 | offset_in_cluster = vmdk_find_offset_in_cluster(extent, offset); |
| 1526 | |
| 1527 | n_bytes = MIN(bytes, extent->cluster_sectors * BDRV_SECTOR_SIZE |
| 1528 | - offset_in_cluster); |
| 1529 | |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1530 | if (ret != VMDK_OK) { |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1531 | /* if not allocated, try to read from parent image, if exist */ |
Kevin Wolf | 760e006 | 2015-06-17 14:55:21 +0200 | [diff] [blame] | 1532 | if (bs->backing && ret != VMDK_ZEROED) { |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1533 | if (!vmdk_is_cid_valid(bs)) { |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1534 | ret = -EINVAL; |
| 1535 | goto fail; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1536 | } |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1537 | |
| 1538 | qemu_iovec_reset(&local_qiov); |
| 1539 | qemu_iovec_concat(&local_qiov, qiov, bytes_done, n_bytes); |
| 1540 | |
Max Reitz | 23c4b2a | 2017-11-23 03:08:19 +0100 | [diff] [blame] | 1541 | /* qcow2 emits this on bs->file instead of bs->backing */ |
| 1542 | BLKDBG_EVENT(bs->file, BLKDBG_READ_BACKING_AIO); |
Kevin Wolf | a03ef88 | 2016-06-20 21:31:46 +0200 | [diff] [blame] | 1543 | ret = bdrv_co_preadv(bs->backing, offset, n_bytes, |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1544 | &local_qiov, 0); |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1545 | if (ret < 0) { |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1546 | goto fail; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1547 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1548 | } else { |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1549 | qemu_iovec_memset(qiov, bytes_done, 0, n_bytes); |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1550 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1551 | } else { |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1552 | qemu_iovec_reset(&local_qiov); |
| 1553 | qemu_iovec_concat(&local_qiov, qiov, bytes_done, n_bytes); |
| 1554 | |
| 1555 | ret = vmdk_read_extent(extent, cluster_offset, offset_in_cluster, |
| 1556 | &local_qiov, n_bytes); |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1557 | if (ret) { |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1558 | goto fail; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1559 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1560 | } |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1561 | bytes -= n_bytes; |
| 1562 | offset += n_bytes; |
| 1563 | bytes_done += n_bytes; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1564 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1565 | |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1566 | ret = 0; |
| 1567 | fail: |
Paolo Bonzini | 2914caa | 2011-10-20 13:16:22 +0200 | [diff] [blame] | 1568 | qemu_co_mutex_unlock(&s->lock); |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 1569 | qemu_iovec_destroy(&local_qiov); |
| 1570 | |
Paolo Bonzini | 2914caa | 2011-10-20 13:16:22 +0200 | [diff] [blame] | 1571 | return ret; |
| 1572 | } |
| 1573 | |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1574 | /** |
| 1575 | * vmdk_write: |
| 1576 | * @zeroed: buf is ignored (data is zero), use zeroed_grain GTE feature |
Fam Zheng | 8e50724 | 2013-08-01 18:12:17 +0800 | [diff] [blame] | 1577 | * if possible, otherwise return -ENOTSUP. |
| 1578 | * @zero_dry_run: used for zeroed == true only, don't update L2 table, just try |
| 1579 | * with each cluster. By dry run we can find if the zero write |
| 1580 | * is possible without modifying image data. |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1581 | * |
| 1582 | * Returns: error code with 0 for success. |
| 1583 | */ |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1584 | static int vmdk_pwritev(BlockDriverState *bs, uint64_t offset, |
| 1585 | uint64_t bytes, QEMUIOVector *qiov, |
| 1586 | bool zeroed, bool zero_dry_run) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1587 | { |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 1588 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1589 | VmdkExtent *extent = NULL; |
Fam Zheng | 585ea0c | 2014-01-08 09:42:07 +0800 | [diff] [blame] | 1590 | int ret; |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1591 | int64_t offset_in_cluster, n_bytes; |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 1592 | uint64_t cluster_offset; |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1593 | uint64_t bytes_done = 0; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1594 | VmdkMetaData m_data; |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 1595 | |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1596 | if (DIV_ROUND_UP(offset, BDRV_SECTOR_SIZE) > bs->total_sectors) { |
| 1597 | error_report("Wrong offset: offset=0x%" PRIx64 |
Markus Armbruster | 9af9e0f | 2015-12-18 16:35:19 +0100 | [diff] [blame] | 1598 | " total_sectors=0x%" PRIx64, |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1599 | offset, bs->total_sectors); |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1600 | return -EIO; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1601 | } |
| 1602 | |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1603 | while (bytes > 0) { |
| 1604 | extent = find_extent(s, offset >> BDRV_SECTOR_BITS, extent); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1605 | if (!extent) { |
| 1606 | return -EIO; |
| 1607 | } |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1608 | offset_in_cluster = vmdk_find_offset_in_cluster(extent, offset); |
| 1609 | n_bytes = MIN(bytes, extent->cluster_sectors * BDRV_SECTOR_SIZE |
| 1610 | - offset_in_cluster); |
| 1611 | |
| 1612 | ret = get_cluster_offset(bs, extent, &m_data, offset, |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1613 | !(extent->compressed || zeroed), |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1614 | &cluster_offset, offset_in_cluster, |
| 1615 | offset_in_cluster + n_bytes); |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1616 | if (extent->compressed) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1617 | if (ret == VMDK_OK) { |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1618 | /* Refuse write to allocated cluster for streamOptimized */ |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1619 | error_report("Could not write to allocated cluster" |
| 1620 | " for streamOptimized"); |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1621 | return -EIO; |
| 1622 | } else { |
| 1623 | /* allocate */ |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1624 | ret = get_cluster_offset(bs, extent, &m_data, offset, |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1625 | true, &cluster_offset, 0, 0); |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1626 | } |
| 1627 | } |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1628 | if (ret == VMDK_ERROR) { |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1629 | return -EINVAL; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1630 | } |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1631 | if (zeroed) { |
| 1632 | /* Do zeroed write, buf is ignored */ |
| 1633 | if (extent->has_zero_grain && |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1634 | offset_in_cluster == 0 && |
| 1635 | n_bytes >= extent->cluster_sectors * BDRV_SECTOR_SIZE) { |
| 1636 | n_bytes = extent->cluster_sectors * BDRV_SECTOR_SIZE; |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1637 | if (!zero_dry_run) { |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1638 | /* update L2 tables */ |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1639 | if (vmdk_L2update(extent, &m_data, VMDK_GTE_ZEROED) |
| 1640 | != VMDK_OK) { |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1641 | return -EIO; |
| 1642 | } |
| 1643 | } |
| 1644 | } else { |
| 1645 | return -ENOTSUP; |
| 1646 | } |
| 1647 | } else { |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1648 | ret = vmdk_write_extent(extent, cluster_offset, offset_in_cluster, |
| 1649 | qiov, bytes_done, n_bytes, offset); |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1650 | if (ret) { |
| 1651 | return ret; |
| 1652 | } |
| 1653 | if (m_data.valid) { |
| 1654 | /* update L2 tables */ |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1655 | if (vmdk_L2update(extent, &m_data, |
| 1656 | cluster_offset >> BDRV_SECTOR_BITS) |
| 1657 | != VMDK_OK) { |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1658 | return -EIO; |
| 1659 | } |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1660 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1661 | } |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1662 | bytes -= n_bytes; |
| 1663 | offset += n_bytes; |
| 1664 | bytes_done += n_bytes; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1665 | |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1666 | /* update CID on the first write every time the virtual disk is |
| 1667 | * opened */ |
Fam Zheng | 69b4d86 | 2011-07-12 19:56:34 +0800 | [diff] [blame] | 1668 | if (!s->cid_updated) { |
Fam Zheng | e5dc64b | 2014-12-04 07:28:29 +0800 | [diff] [blame] | 1669 | ret = vmdk_write_cid(bs, g_random_int()); |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 1670 | if (ret < 0) { |
| 1671 | return ret; |
| 1672 | } |
Fam Zheng | 69b4d86 | 2011-07-12 19:56:34 +0800 | [diff] [blame] | 1673 | s->cid_updated = true; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1674 | } |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 1675 | } |
| 1676 | return 0; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1677 | } |
| 1678 | |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1679 | static int coroutine_fn |
| 1680 | vmdk_co_pwritev(BlockDriverState *bs, uint64_t offset, uint64_t bytes, |
| 1681 | QEMUIOVector *qiov, int flags) |
Paolo Bonzini | e183ef7 | 2011-10-20 13:16:23 +0200 | [diff] [blame] | 1682 | { |
| 1683 | int ret; |
| 1684 | BDRVVmdkState *s = bs->opaque; |
| 1685 | qemu_co_mutex_lock(&s->lock); |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1686 | ret = vmdk_pwritev(bs, offset, bytes, qiov, false, false); |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1687 | qemu_co_mutex_unlock(&s->lock); |
| 1688 | return ret; |
| 1689 | } |
| 1690 | |
Pavel Butsykin | b2c622d | 2016-07-22 11:17:45 +0300 | [diff] [blame] | 1691 | static int coroutine_fn |
| 1692 | vmdk_co_pwritev_compressed(BlockDriverState *bs, uint64_t offset, |
| 1693 | uint64_t bytes, QEMUIOVector *qiov) |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1694 | { |
Pavel Butsykin | b2c622d | 2016-07-22 11:17:45 +0300 | [diff] [blame] | 1695 | return vmdk_co_pwritev(bs, offset, bytes, qiov, 0); |
Fam Zheng | ba0ad89 | 2014-05-06 21:08:44 +0800 | [diff] [blame] | 1696 | } |
| 1697 | |
Eric Blake | a620f2a | 2016-06-01 15:10:12 -0600 | [diff] [blame] | 1698 | static int coroutine_fn vmdk_co_pwrite_zeroes(BlockDriverState *bs, |
| 1699 | int64_t offset, |
| 1700 | int bytes, |
| 1701 | BdrvRequestFlags flags) |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1702 | { |
| 1703 | int ret; |
| 1704 | BDRVVmdkState *s = bs->opaque; |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1705 | |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1706 | qemu_co_mutex_lock(&s->lock); |
Fam Zheng | 8e50724 | 2013-08-01 18:12:17 +0800 | [diff] [blame] | 1707 | /* write zeroes could fail if sectors not aligned to cluster, test it with |
| 1708 | * dry_run == true before really updating image */ |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1709 | ret = vmdk_pwritev(bs, offset, bytes, NULL, true, true); |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1710 | if (!ret) { |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 1711 | ret = vmdk_pwritev(bs, offset, bytes, NULL, true, false); |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1712 | } |
Paolo Bonzini | e183ef7 | 2011-10-20 13:16:23 +0200 | [diff] [blame] | 1713 | qemu_co_mutex_unlock(&s->lock); |
| 1714 | return ret; |
| 1715 | } |
| 1716 | |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 1717 | static int vmdk_create_extent(const char *filename, int64_t filesize, |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1718 | bool flat, bool compress, bool zeroed_grain, |
Chunyan Liu | 4ab1559 | 2014-06-30 14:29:58 +0800 | [diff] [blame] | 1719 | QemuOpts *opts, Error **errp) |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1720 | { |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1721 | int ret, i; |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 1722 | BlockBackend *blk = NULL; |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1723 | VMDK4Header header; |
Fam Zheng | c13959c | 2014-05-28 11:38:58 +0800 | [diff] [blame] | 1724 | Error *local_err = NULL; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1725 | uint32_t tmp, magic, grains, gd_sectors, gt_size, gt_count; |
| 1726 | uint32_t *gd_buf = NULL; |
| 1727 | int gd_buf_size; |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 1728 | |
Chunyan Liu | 4ab1559 | 2014-06-30 14:29:58 +0800 | [diff] [blame] | 1729 | ret = bdrv_create_file(filename, opts, &local_err); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1730 | if (ret < 0) { |
| 1731 | error_propagate(errp, local_err); |
| 1732 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1733 | } |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1734 | |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 1735 | blk = blk_new_open(filename, NULL, NULL, |
Kevin Wolf | 5588060 | 2017-02-17 15:07:38 +0100 | [diff] [blame] | 1736 | BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_PROTOCOL, |
| 1737 | &local_err); |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 1738 | if (blk == NULL) { |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1739 | error_propagate(errp, local_err); |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 1740 | ret = -EIO; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1741 | goto exit; |
| 1742 | } |
| 1743 | |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 1744 | blk_set_allow_write_beyond_eof(blk, true); |
| 1745 | |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1746 | if (flat) { |
Max Reitz | 3a691c5 | 2017-06-13 22:20:54 +0200 | [diff] [blame] | 1747 | ret = blk_truncate(blk, filesize, PREALLOC_MODE_OFF, errp); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1748 | goto exit; |
| 1749 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1750 | magic = cpu_to_be32(VMDK4_MAGIC); |
| 1751 | memset(&header, 0, sizeof(header)); |
Fam Zheng | d62d9dc | 2015-09-17 13:04:10 +0800 | [diff] [blame] | 1752 | if (compress) { |
| 1753 | header.version = 3; |
| 1754 | } else if (zeroed_grain) { |
| 1755 | header.version = 2; |
| 1756 | } else { |
| 1757 | header.version = 1; |
| 1758 | } |
Fam Zheng | 95b0aa4 | 2013-05-02 10:25:25 +0800 | [diff] [blame] | 1759 | header.flags = VMDK4_FLAG_RGD | VMDK4_FLAG_NL_DETECT |
Fam Zheng | 69e0b6d | 2013-05-02 10:25:24 +0800 | [diff] [blame] | 1760 | | (compress ? VMDK4_FLAG_COMPRESS | VMDK4_FLAG_MARKER : 0) |
| 1761 | | (zeroed_grain ? VMDK4_FLAG_ZERO_GRAIN : 0); |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 1762 | header.compressAlgorithm = compress ? VMDK4_COMPRESSION_DEFLATE : 0; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1763 | header.capacity = filesize / BDRV_SECTOR_SIZE; |
Alexander Graf | 16372ff | 2011-05-25 00:46:55 +0200 | [diff] [blame] | 1764 | header.granularity = 128; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1765 | header.num_gtes_per_gt = BDRV_SECTOR_SIZE; |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1766 | |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1767 | grains = DIV_ROUND_UP(filesize / BDRV_SECTOR_SIZE, header.granularity); |
| 1768 | gt_size = DIV_ROUND_UP(header.num_gtes_per_gt * sizeof(uint32_t), |
| 1769 | BDRV_SECTOR_SIZE); |
| 1770 | gt_count = DIV_ROUND_UP(grains, header.num_gtes_per_gt); |
| 1771 | gd_sectors = DIV_ROUND_UP(gt_count * sizeof(uint32_t), BDRV_SECTOR_SIZE); |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1772 | |
| 1773 | header.desc_offset = 1; |
| 1774 | header.desc_size = 20; |
| 1775 | header.rgd_offset = header.desc_offset + header.desc_size; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1776 | header.gd_offset = header.rgd_offset + gd_sectors + (gt_size * gt_count); |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1777 | header.grain_offset = |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1778 | ROUND_UP(header.gd_offset + gd_sectors + (gt_size * gt_count), |
| 1779 | header.granularity); |
Alexander Graf | 16372ff | 2011-05-25 00:46:55 +0200 | [diff] [blame] | 1780 | /* swap endianness for all header fields */ |
| 1781 | header.version = cpu_to_le32(header.version); |
| 1782 | header.flags = cpu_to_le32(header.flags); |
| 1783 | header.capacity = cpu_to_le64(header.capacity); |
| 1784 | header.granularity = cpu_to_le64(header.granularity); |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 1785 | header.num_gtes_per_gt = cpu_to_le32(header.num_gtes_per_gt); |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1786 | header.desc_offset = cpu_to_le64(header.desc_offset); |
| 1787 | header.desc_size = cpu_to_le64(header.desc_size); |
| 1788 | header.rgd_offset = cpu_to_le64(header.rgd_offset); |
| 1789 | header.gd_offset = cpu_to_le64(header.gd_offset); |
| 1790 | header.grain_offset = cpu_to_le64(header.grain_offset); |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 1791 | header.compressAlgorithm = cpu_to_le16(header.compressAlgorithm); |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1792 | |
| 1793 | header.check_bytes[0] = 0xa; |
| 1794 | header.check_bytes[1] = 0x20; |
| 1795 | header.check_bytes[2] = 0xd; |
| 1796 | header.check_bytes[3] = 0xa; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 1797 | |
| 1798 | /* write all the data */ |
Eric Blake | 8341f00 | 2016-05-06 10:26:27 -0600 | [diff] [blame] | 1799 | ret = blk_pwrite(blk, 0, &magic, sizeof(magic), 0); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1800 | if (ret < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1801 | error_setg(errp, QERR_IO_ERROR); |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 1802 | goto exit; |
| 1803 | } |
Eric Blake | 8341f00 | 2016-05-06 10:26:27 -0600 | [diff] [blame] | 1804 | ret = blk_pwrite(blk, sizeof(magic), &header, sizeof(header), 0); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1805 | if (ret < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1806 | error_setg(errp, QERR_IO_ERROR); |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 1807 | goto exit; |
| 1808 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1809 | |
Max Reitz | 3a691c5 | 2017-06-13 22:20:54 +0200 | [diff] [blame] | 1810 | ret = blk_truncate(blk, le64_to_cpu(header.grain_offset) << 9, |
| 1811 | PREALLOC_MODE_OFF, errp); |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 1812 | if (ret < 0) { |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 1813 | goto exit; |
| 1814 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1815 | |
| 1816 | /* write grain directory */ |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1817 | gd_buf_size = gd_sectors * BDRV_SECTOR_SIZE; |
| 1818 | gd_buf = g_malloc0(gd_buf_size); |
| 1819 | 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] | 1820 | i < gt_count; i++, tmp += gt_size) { |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1821 | gd_buf[i] = cpu_to_le32(tmp); |
| 1822 | } |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 1823 | ret = blk_pwrite(blk, le64_to_cpu(header.rgd_offset) * BDRV_SECTOR_SIZE, |
Eric Blake | 8341f00 | 2016-05-06 10:26:27 -0600 | [diff] [blame] | 1824 | gd_buf, gd_buf_size, 0); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1825 | if (ret < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1826 | error_setg(errp, QERR_IO_ERROR); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1827 | goto exit; |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 1828 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 1829 | |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1830 | /* write backup grain directory */ |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1831 | 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] | 1832 | i < gt_count; i++, tmp += gt_size) { |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1833 | gd_buf[i] = cpu_to_le32(tmp); |
| 1834 | } |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 1835 | ret = blk_pwrite(blk, le64_to_cpu(header.gd_offset) * BDRV_SECTOR_SIZE, |
Eric Blake | 8341f00 | 2016-05-06 10:26:27 -0600 | [diff] [blame] | 1836 | gd_buf, gd_buf_size, 0); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1837 | if (ret < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1838 | error_setg(errp, QERR_IO_ERROR); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1839 | goto exit; |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 1840 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1841 | |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1842 | ret = 0; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1843 | exit: |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 1844 | if (blk) { |
| 1845 | blk_unref(blk); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1846 | } |
| 1847 | g_free(gd_buf); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1848 | return ret; |
| 1849 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1850 | |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1851 | static int filename_decompose(const char *filename, char *path, char *prefix, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1852 | char *postfix, size_t buf_len, Error **errp) |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1853 | { |
| 1854 | const char *p, *q; |
| 1855 | |
| 1856 | if (filename == NULL || !strlen(filename)) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1857 | error_setg(errp, "No filename provided"); |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1858 | return VMDK_ERROR; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1859 | } |
| 1860 | p = strrchr(filename, '/'); |
| 1861 | if (p == NULL) { |
| 1862 | p = strrchr(filename, '\\'); |
| 1863 | } |
| 1864 | if (p == NULL) { |
| 1865 | p = strrchr(filename, ':'); |
| 1866 | } |
| 1867 | if (p != NULL) { |
| 1868 | p++; |
| 1869 | if (p - filename >= buf_len) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1870 | return VMDK_ERROR; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1871 | } |
| 1872 | pstrcpy(path, p - filename + 1, filename); |
| 1873 | } else { |
| 1874 | p = filename; |
| 1875 | path[0] = '\0'; |
| 1876 | } |
| 1877 | q = strrchr(p, '.'); |
| 1878 | if (q == NULL) { |
| 1879 | pstrcpy(prefix, buf_len, p); |
| 1880 | postfix[0] = '\0'; |
| 1881 | } else { |
| 1882 | if (q - p >= buf_len) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1883 | return VMDK_ERROR; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1884 | } |
| 1885 | pstrcpy(prefix, q - p + 1, p); |
| 1886 | pstrcpy(postfix, buf_len, q); |
| 1887 | } |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1888 | return VMDK_OK; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1889 | } |
| 1890 | |
Stefan Hajnoczi | efc75e2 | 2018-01-18 13:43:45 +0100 | [diff] [blame] | 1891 | static int coroutine_fn vmdk_co_create_opts(const char *filename, QemuOpts *opts, |
| 1892 | Error **errp) |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1893 | { |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1894 | int idx = 0; |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 1895 | BlockBackend *new_blk = NULL; |
Fam Zheng | c13959c | 2014-05-28 11:38:58 +0800 | [diff] [blame] | 1896 | Error *local_err = NULL; |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1897 | char *desc = NULL; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1898 | int64_t total_size = 0, filesize; |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 1899 | char *adapter_type = NULL; |
| 1900 | char *backing_file = NULL; |
Janne Karhunen | f249924 | 2016-05-03 02:43:30 -0700 | [diff] [blame] | 1901 | char *hw_version = NULL; |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 1902 | char *fmt = NULL; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1903 | int ret = 0; |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 1904 | bool flat, split, compress; |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1905 | GString *ext_desc_lines; |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 1906 | char *path = g_malloc0(PATH_MAX); |
| 1907 | char *prefix = g_malloc0(PATH_MAX); |
| 1908 | char *postfix = g_malloc0(PATH_MAX); |
| 1909 | char *desc_line = g_malloc0(BUF_SIZE); |
| 1910 | char *ext_filename = g_malloc0(PATH_MAX); |
| 1911 | char *desc_filename = g_malloc0(PATH_MAX); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1912 | const int64_t split_size = 0x80000000; /* VMDK has constant split size */ |
| 1913 | const char *desc_extent_line; |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 1914 | char *parent_desc_line = g_malloc0(BUF_SIZE); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1915 | uint32_t parent_cid = 0xffffffff; |
Othmar Pasteka | 7f2039f | 2013-01-30 00:26:52 +0100 | [diff] [blame] | 1916 | uint32_t number_heads = 16; |
Fam Zheng | 69e0b6d | 2013-05-02 10:25:24 +0800 | [diff] [blame] | 1917 | bool zeroed_grain = false; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1918 | uint32_t desc_offset = 0, desc_len; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1919 | const char desc_template[] = |
| 1920 | "# Disk DescriptorFile\n" |
| 1921 | "version=1\n" |
Fam Zheng | 9b17031 | 2014-04-17 18:43:53 +0800 | [diff] [blame] | 1922 | "CID=%" PRIx32 "\n" |
| 1923 | "parentCID=%" PRIx32 "\n" |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1924 | "createType=\"%s\"\n" |
| 1925 | "%s" |
| 1926 | "\n" |
| 1927 | "# Extent description\n" |
| 1928 | "%s" |
| 1929 | "\n" |
| 1930 | "# The Disk Data Base\n" |
| 1931 | "#DDB\n" |
| 1932 | "\n" |
Janne Karhunen | f249924 | 2016-05-03 02:43:30 -0700 | [diff] [blame] | 1933 | "ddb.virtualHWVersion = \"%s\"\n" |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1934 | "ddb.geometry.cylinders = \"%" PRId64 "\"\n" |
Fam Zheng | 4ab9dab | 2014-04-17 11:34:37 +0800 | [diff] [blame] | 1935 | "ddb.geometry.heads = \"%" PRIu32 "\"\n" |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1936 | "ddb.geometry.sectors = \"63\"\n" |
Othmar Pasteka | 7f2039f | 2013-01-30 00:26:52 +0100 | [diff] [blame] | 1937 | "ddb.adapterType = \"%s\"\n"; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1938 | |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1939 | ext_desc_lines = g_string_new(NULL); |
| 1940 | |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1941 | if (filename_decompose(filename, path, prefix, postfix, PATH_MAX, errp)) { |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1942 | ret = -EINVAL; |
| 1943 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1944 | } |
| 1945 | /* Read out options */ |
Hu Tao | c2eb918 | 2014-09-10 17:05:45 +0800 | [diff] [blame] | 1946 | total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), |
| 1947 | BDRV_SECTOR_SIZE); |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 1948 | adapter_type = qemu_opt_get_del(opts, BLOCK_OPT_ADAPTER_TYPE); |
| 1949 | backing_file = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FILE); |
Janne Karhunen | f249924 | 2016-05-03 02:43:30 -0700 | [diff] [blame] | 1950 | hw_version = qemu_opt_get_del(opts, BLOCK_OPT_HWVERSION); |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 1951 | if (qemu_opt_get_bool_del(opts, BLOCK_OPT_COMPAT6, false)) { |
Janne Karhunen | f249924 | 2016-05-03 02:43:30 -0700 | [diff] [blame] | 1952 | if (strcmp(hw_version, "undefined")) { |
| 1953 | error_setg(errp, |
| 1954 | "compat6 cannot be enabled with hwversion set"); |
| 1955 | ret = -EINVAL; |
| 1956 | goto exit; |
| 1957 | } |
| 1958 | g_free(hw_version); |
| 1959 | hw_version = g_strdup("6"); |
| 1960 | } |
| 1961 | if (strcmp(hw_version, "undefined") == 0) { |
| 1962 | g_free(hw_version); |
| 1963 | hw_version = g_strdup("4"); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1964 | } |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 1965 | fmt = qemu_opt_get_del(opts, BLOCK_OPT_SUBFMT); |
| 1966 | if (qemu_opt_get_bool_del(opts, BLOCK_OPT_ZEROED_GRAIN, false)) { |
| 1967 | zeroed_grain = true; |
| 1968 | } |
| 1969 | |
Othmar Pasteka | 7f2039f | 2013-01-30 00:26:52 +0100 | [diff] [blame] | 1970 | if (!adapter_type) { |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 1971 | adapter_type = g_strdup("ide"); |
Othmar Pasteka | 7f2039f | 2013-01-30 00:26:52 +0100 | [diff] [blame] | 1972 | } else if (strcmp(adapter_type, "ide") && |
| 1973 | strcmp(adapter_type, "buslogic") && |
| 1974 | strcmp(adapter_type, "lsilogic") && |
| 1975 | strcmp(adapter_type, "legacyESX")) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1976 | error_setg(errp, "Unknown adapter type: '%s'", adapter_type); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1977 | ret = -EINVAL; |
| 1978 | goto exit; |
Othmar Pasteka | 7f2039f | 2013-01-30 00:26:52 +0100 | [diff] [blame] | 1979 | } |
| 1980 | if (strcmp(adapter_type, "ide") != 0) { |
| 1981 | /* that's the number of heads with which vmware operates when |
| 1982 | creating, exporting, etc. vmdk files with a non-ide adapter type */ |
| 1983 | number_heads = 255; |
| 1984 | } |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1985 | if (!fmt) { |
| 1986 | /* Default format to monolithicSparse */ |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 1987 | fmt = g_strdup("monolithicSparse"); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1988 | } else if (strcmp(fmt, "monolithicFlat") && |
| 1989 | strcmp(fmt, "monolithicSparse") && |
| 1990 | strcmp(fmt, "twoGbMaxExtentSparse") && |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 1991 | strcmp(fmt, "twoGbMaxExtentFlat") && |
| 1992 | strcmp(fmt, "streamOptimized")) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1993 | error_setg(errp, "Unknown subformat: '%s'", fmt); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1994 | ret = -EINVAL; |
| 1995 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1996 | } |
| 1997 | split = !(strcmp(fmt, "twoGbMaxExtentFlat") && |
| 1998 | strcmp(fmt, "twoGbMaxExtentSparse")); |
| 1999 | flat = !(strcmp(fmt, "monolithicFlat") && |
| 2000 | strcmp(fmt, "twoGbMaxExtentFlat")); |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 2001 | compress = !strcmp(fmt, "streamOptimized"); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2002 | if (flat) { |
Fam Zheng | 4ab9dab | 2014-04-17 11:34:37 +0800 | [diff] [blame] | 2003 | desc_extent_line = "RW %" PRId64 " FLAT \"%s\" 0\n"; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2004 | } else { |
Fam Zheng | 4ab9dab | 2014-04-17 11:34:37 +0800 | [diff] [blame] | 2005 | desc_extent_line = "RW %" PRId64 " SPARSE \"%s\"\n"; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2006 | } |
| 2007 | if (flat && backing_file) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 2008 | error_setg(errp, "Flat image can't have backing file"); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2009 | ret = -ENOTSUP; |
| 2010 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2011 | } |
Fam Zheng | 52c8d62 | 2013-10-11 15:43:23 +0800 | [diff] [blame] | 2012 | if (flat && zeroed_grain) { |
| 2013 | error_setg(errp, "Flat image can't enable zeroed grain"); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2014 | ret = -ENOTSUP; |
| 2015 | goto exit; |
Fam Zheng | 52c8d62 | 2013-10-11 15:43:23 +0800 | [diff] [blame] | 2016 | } |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2017 | if (backing_file) { |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 2018 | BlockBackend *blk; |
Max Reitz | 1085daf | 2014-11-26 17:20:28 +0100 | [diff] [blame] | 2019 | char *full_backing = g_new0(char, PATH_MAX); |
| 2020 | bdrv_get_full_backing_filename_from_filename(filename, backing_file, |
| 2021 | full_backing, PATH_MAX, |
| 2022 | &local_err); |
| 2023 | if (local_err) { |
| 2024 | g_free(full_backing); |
| 2025 | error_propagate(errp, local_err); |
| 2026 | ret = -ENOENT; |
| 2027 | goto exit; |
| 2028 | } |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 2029 | |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 2030 | blk = blk_new_open(full_backing, NULL, NULL, |
Kevin Wolf | 72e775c | 2016-03-15 14:34:37 +0100 | [diff] [blame] | 2031 | BDRV_O_NO_BACKING, errp); |
Max Reitz | 1085daf | 2014-11-26 17:20:28 +0100 | [diff] [blame] | 2032 | g_free(full_backing); |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 2033 | if (blk == NULL) { |
| 2034 | ret = -EIO; |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2035 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2036 | } |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 2037 | if (strcmp(blk_bs(blk)->drv->format_name, "vmdk")) { |
| 2038 | blk_unref(blk); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2039 | ret = -EINVAL; |
| 2040 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2041 | } |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 2042 | ret = vmdk_read_cid(blk_bs(blk), 0, &parent_cid); |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 2043 | blk_unref(blk); |
Peter Maydell | 9877860 | 2017-07-09 18:06:14 +0100 | [diff] [blame] | 2044 | if (ret) { |
| 2045 | goto exit; |
| 2046 | } |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 2047 | snprintf(parent_desc_line, BUF_SIZE, |
Fam Zheng | 8ed610a | 2013-06-26 17:24:32 +0800 | [diff] [blame] | 2048 | "parentFileNameHint=\"%s\"", backing_file); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2049 | } |
| 2050 | |
| 2051 | /* Create extents */ |
| 2052 | filesize = total_size; |
| 2053 | while (filesize > 0) { |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2054 | int64_t size = filesize; |
| 2055 | |
| 2056 | if (split && size > split_size) { |
| 2057 | size = split_size; |
| 2058 | } |
| 2059 | if (split) { |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 2060 | snprintf(desc_filename, PATH_MAX, "%s-%c%03d%s", |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2061 | prefix, flat ? 'f' : 's', ++idx, postfix); |
| 2062 | } else if (flat) { |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 2063 | snprintf(desc_filename, PATH_MAX, "%s-flat%s", prefix, postfix); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2064 | } else { |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 2065 | snprintf(desc_filename, PATH_MAX, "%s%s", prefix, postfix); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2066 | } |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 2067 | snprintf(ext_filename, PATH_MAX, "%s%s", path, desc_filename); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2068 | |
Fam Zheng | 69e0b6d | 2013-05-02 10:25:24 +0800 | [diff] [blame] | 2069 | if (vmdk_create_extent(ext_filename, size, |
Chunyan Liu | 4ab1559 | 2014-06-30 14:29:58 +0800 | [diff] [blame] | 2070 | flat, compress, zeroed_grain, opts, errp)) { |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2071 | ret = -EINVAL; |
| 2072 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2073 | } |
| 2074 | filesize -= size; |
| 2075 | |
| 2076 | /* Format description line */ |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 2077 | snprintf(desc_line, BUF_SIZE, |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2078 | desc_extent_line, size / BDRV_SECTOR_SIZE, desc_filename); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2079 | g_string_append(ext_desc_lines, desc_line); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2080 | } |
| 2081 | /* generate descriptor file */ |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2082 | desc = g_strdup_printf(desc_template, |
Fam Zheng | e5dc64b | 2014-12-04 07:28:29 +0800 | [diff] [blame] | 2083 | g_random_int(), |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2084 | parent_cid, |
| 2085 | fmt, |
| 2086 | parent_desc_line, |
| 2087 | ext_desc_lines->str, |
Janne Karhunen | f249924 | 2016-05-03 02:43:30 -0700 | [diff] [blame] | 2088 | hw_version, |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2089 | total_size / |
| 2090 | (int64_t)(63 * number_heads * BDRV_SECTOR_SIZE), |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2091 | number_heads, |
| 2092 | adapter_type); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2093 | desc_len = strlen(desc); |
| 2094 | /* the descriptor offset = 0x200 */ |
| 2095 | if (!split && !flat) { |
| 2096 | desc_offset = 0x200; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2097 | } else { |
Chunyan Liu | c282e1f | 2014-06-05 17:21:11 +0800 | [diff] [blame] | 2098 | ret = bdrv_create_file(filename, opts, &local_err); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2099 | if (ret < 0) { |
Fam Zheng | c13959c | 2014-05-28 11:38:58 +0800 | [diff] [blame] | 2100 | error_propagate(errp, local_err); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2101 | goto exit; |
| 2102 | } |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2103 | } |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 2104 | |
Max Reitz | efaa7c4 | 2016-03-16 19:54:38 +0100 | [diff] [blame] | 2105 | new_blk = blk_new_open(filename, NULL, NULL, |
Kevin Wolf | 5588060 | 2017-02-17 15:07:38 +0100 | [diff] [blame] | 2106 | BDRV_O_RDWR | BDRV_O_RESIZE | BDRV_O_PROTOCOL, |
| 2107 | &local_err); |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 2108 | if (new_blk == NULL) { |
Fam Zheng | c13959c | 2014-05-28 11:38:58 +0800 | [diff] [blame] | 2109 | error_propagate(errp, local_err); |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 2110 | ret = -EIO; |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2111 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2112 | } |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 2113 | |
| 2114 | blk_set_allow_write_beyond_eof(new_blk, true); |
| 2115 | |
Eric Blake | 8341f00 | 2016-05-06 10:26:27 -0600 | [diff] [blame] | 2116 | ret = blk_pwrite(new_blk, desc_offset, desc, desc_len, 0); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2117 | if (ret < 0) { |
| 2118 | error_setg_errno(errp, -ret, "Could not write description"); |
| 2119 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 2120 | } |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2121 | /* bdrv_pwrite write padding zeros to align to sector, we don't need that |
| 2122 | * for description file */ |
| 2123 | if (desc_offset == 0) { |
Max Reitz | 3a691c5 | 2017-06-13 22:20:54 +0200 | [diff] [blame] | 2124 | ret = blk_truncate(new_blk, desc_len, PREALLOC_MODE_OFF, errp); |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 2125 | } |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2126 | exit: |
Kevin Wolf | c4bea16 | 2016-03-08 15:57:05 +0100 | [diff] [blame] | 2127 | if (new_blk) { |
| 2128 | blk_unref(new_blk); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 2129 | } |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 2130 | g_free(adapter_type); |
| 2131 | g_free(backing_file); |
Janne Karhunen | f249924 | 2016-05-03 02:43:30 -0700 | [diff] [blame] | 2132 | g_free(hw_version); |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 2133 | g_free(fmt); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2134 | g_free(desc); |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 2135 | g_free(path); |
| 2136 | g_free(prefix); |
| 2137 | g_free(postfix); |
| 2138 | g_free(desc_line); |
| 2139 | g_free(ext_filename); |
| 2140 | g_free(desc_filename); |
| 2141 | g_free(parent_desc_line); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2142 | g_string_free(ext_desc_lines, true); |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 2143 | return ret; |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2144 | } |
| 2145 | |
bellard | e2731ad | 2004-09-18 19:32:11 +0000 | [diff] [blame] | 2146 | static void vmdk_close(BlockDriverState *bs) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 2147 | { |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 2148 | BDRVVmdkState *s = bs->opaque; |
| 2149 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 2150 | vmdk_free_extents(bs); |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2151 | g_free(s->create_type); |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 2152 | |
| 2153 | migrate_del_blocker(s->migration_blocker); |
| 2154 | error_free(s->migration_blocker); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 2155 | } |
| 2156 | |
Paolo Bonzini | 8b94ff8 | 2011-10-20 13:16:24 +0200 | [diff] [blame] | 2157 | static coroutine_fn int vmdk_co_flush(BlockDriverState *bs) |
pbrook | 7a6cba6 | 2006-06-04 11:39:07 +0000 | [diff] [blame] | 2158 | { |
Fam Zheng | 333c574 | 2011-07-12 19:56:33 +0800 | [diff] [blame] | 2159 | BDRVVmdkState *s = bs->opaque; |
Paolo Bonzini | 29cdb25 | 2012-03-12 18:26:01 +0100 | [diff] [blame] | 2160 | int i, err; |
| 2161 | int ret = 0; |
Fam Zheng | 333c574 | 2011-07-12 19:56:33 +0800 | [diff] [blame] | 2162 | |
Fam Zheng | 333c574 | 2011-07-12 19:56:33 +0800 | [diff] [blame] | 2163 | for (i = 0; i < s->num_extents; i++) { |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 2164 | err = bdrv_co_flush(s->extents[i].file->bs); |
Fam Zheng | 333c574 | 2011-07-12 19:56:33 +0800 | [diff] [blame] | 2165 | if (err < 0) { |
| 2166 | ret = err; |
| 2167 | } |
| 2168 | } |
| 2169 | return ret; |
pbrook | 7a6cba6 | 2006-06-04 11:39:07 +0000 | [diff] [blame] | 2170 | } |
| 2171 | |
Fam Zheng | 4a1d5e1 | 2011-07-12 19:56:39 +0800 | [diff] [blame] | 2172 | static int64_t vmdk_get_allocated_file_size(BlockDriverState *bs) |
| 2173 | { |
| 2174 | int i; |
| 2175 | int64_t ret = 0; |
| 2176 | int64_t r; |
| 2177 | BDRVVmdkState *s = bs->opaque; |
| 2178 | |
Kevin Wolf | 9a4f4c3 | 2015-06-16 14:19:22 +0200 | [diff] [blame] | 2179 | ret = bdrv_get_allocated_file_size(bs->file->bs); |
Fam Zheng | 4a1d5e1 | 2011-07-12 19:56:39 +0800 | [diff] [blame] | 2180 | if (ret < 0) { |
| 2181 | return ret; |
| 2182 | } |
| 2183 | for (i = 0; i < s->num_extents; i++) { |
Kevin Wolf | 9a4f4c3 | 2015-06-16 14:19:22 +0200 | [diff] [blame] | 2184 | if (s->extents[i].file == bs->file) { |
Fam Zheng | 4a1d5e1 | 2011-07-12 19:56:39 +0800 | [diff] [blame] | 2185 | continue; |
| 2186 | } |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 2187 | r = bdrv_get_allocated_file_size(s->extents[i].file->bs); |
Fam Zheng | 4a1d5e1 | 2011-07-12 19:56:39 +0800 | [diff] [blame] | 2188 | if (r < 0) { |
| 2189 | return r; |
| 2190 | } |
| 2191 | ret += r; |
| 2192 | } |
| 2193 | return ret; |
| 2194 | } |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 2195 | |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2196 | static int vmdk_has_zero_init(BlockDriverState *bs) |
| 2197 | { |
| 2198 | int i; |
| 2199 | BDRVVmdkState *s = bs->opaque; |
| 2200 | |
| 2201 | /* If has a flat extent and its underlying storage doesn't have zero init, |
| 2202 | * return 0. */ |
| 2203 | for (i = 0; i < s->num_extents; i++) { |
| 2204 | if (s->extents[i].flat) { |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 2205 | if (!bdrv_has_zero_init(s->extents[i].file->bs)) { |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2206 | return 0; |
| 2207 | } |
| 2208 | } |
| 2209 | } |
| 2210 | return 1; |
| 2211 | } |
| 2212 | |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2213 | static ImageInfo *vmdk_get_extent_info(VmdkExtent *extent) |
| 2214 | { |
| 2215 | ImageInfo *info = g_new0(ImageInfo, 1); |
| 2216 | |
| 2217 | *info = (ImageInfo){ |
Kevin Wolf | 24bc15d | 2015-06-15 13:50:20 +0200 | [diff] [blame] | 2218 | .filename = g_strdup(extent->file->bs->filename), |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2219 | .format = g_strdup(extent->type), |
| 2220 | .virtual_size = extent->sectors * BDRV_SECTOR_SIZE, |
| 2221 | .compressed = extent->compressed, |
| 2222 | .has_compressed = extent->compressed, |
| 2223 | .cluster_size = extent->cluster_sectors * BDRV_SECTOR_SIZE, |
| 2224 | .has_cluster_size = !extent->flat, |
| 2225 | }; |
| 2226 | |
| 2227 | return info; |
| 2228 | } |
| 2229 | |
Paolo Bonzini | 2fd6163 | 2018-03-01 17:36:19 +0100 | [diff] [blame] | 2230 | static int coroutine_fn vmdk_co_check(BlockDriverState *bs, |
| 2231 | BdrvCheckResult *result, |
| 2232 | BdrvCheckMode fix) |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 2233 | { |
| 2234 | BDRVVmdkState *s = bs->opaque; |
| 2235 | VmdkExtent *extent = NULL; |
| 2236 | int64_t sector_num = 0; |
Markus Armbruster | 57322b7 | 2014-06-26 13:23:22 +0200 | [diff] [blame] | 2237 | int64_t total_sectors = bdrv_nb_sectors(bs); |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 2238 | int ret; |
| 2239 | uint64_t cluster_offset; |
| 2240 | |
| 2241 | if (fix) { |
| 2242 | return -ENOTSUP; |
| 2243 | } |
| 2244 | |
| 2245 | for (;;) { |
| 2246 | if (sector_num >= total_sectors) { |
| 2247 | return 0; |
| 2248 | } |
| 2249 | extent = find_extent(s, sector_num, extent); |
| 2250 | if (!extent) { |
| 2251 | fprintf(stderr, |
| 2252 | "ERROR: could not find extent for sector %" PRId64 "\n", |
| 2253 | sector_num); |
Fam Zheng | 0e51b9b | 2017-08-04 22:09:42 +0800 | [diff] [blame] | 2254 | ret = -EINVAL; |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 2255 | break; |
| 2256 | } |
| 2257 | ret = get_cluster_offset(bs, extent, NULL, |
| 2258 | sector_num << BDRV_SECTOR_BITS, |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 2259 | false, &cluster_offset, 0, 0); |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 2260 | if (ret == VMDK_ERROR) { |
| 2261 | fprintf(stderr, |
| 2262 | "ERROR: could not get cluster_offset for sector %" |
| 2263 | PRId64 "\n", sector_num); |
| 2264 | break; |
| 2265 | } |
Fam Zheng | 0e51b9b | 2017-08-04 22:09:42 +0800 | [diff] [blame] | 2266 | if (ret == VMDK_OK) { |
| 2267 | int64_t extent_len = bdrv_getlength(extent->file->bs); |
| 2268 | if (extent_len < 0) { |
| 2269 | fprintf(stderr, |
| 2270 | "ERROR: could not get extent file length for sector %" |
| 2271 | PRId64 "\n", sector_num); |
| 2272 | ret = extent_len; |
| 2273 | break; |
| 2274 | } |
| 2275 | if (cluster_offset >= extent_len) { |
| 2276 | fprintf(stderr, |
| 2277 | "ERROR: cluster offset for sector %" |
| 2278 | PRId64 " points after EOF\n", sector_num); |
| 2279 | ret = -EINVAL; |
| 2280 | break; |
| 2281 | } |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 2282 | } |
| 2283 | sector_num += extent->cluster_sectors; |
| 2284 | } |
| 2285 | |
| 2286 | result->corruptions++; |
Fam Zheng | 0e51b9b | 2017-08-04 22:09:42 +0800 | [diff] [blame] | 2287 | return ret; |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 2288 | } |
| 2289 | |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2290 | static ImageInfoSpecific *vmdk_get_specific_info(BlockDriverState *bs) |
| 2291 | { |
| 2292 | int i; |
| 2293 | BDRVVmdkState *s = bs->opaque; |
| 2294 | ImageInfoSpecific *spec_info = g_new0(ImageInfoSpecific, 1); |
| 2295 | ImageInfoList **next; |
| 2296 | |
| 2297 | *spec_info = (ImageInfoSpecific){ |
Eric Blake | 6a8f966 | 2015-10-26 16:34:54 -0600 | [diff] [blame] | 2298 | .type = IMAGE_INFO_SPECIFIC_KIND_VMDK, |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2299 | .u = { |
| 2300 | .vmdk.data = g_new0(ImageInfoSpecificVmdk, 1), |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2301 | }, |
| 2302 | }; |
| 2303 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2304 | *spec_info->u.vmdk.data = (ImageInfoSpecificVmdk) { |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2305 | .create_type = g_strdup(s->create_type), |
| 2306 | .cid = s->cid, |
| 2307 | .parent_cid = s->parent_cid, |
| 2308 | }; |
| 2309 | |
Eric Blake | 32bafa8 | 2016-03-17 16:48:37 -0600 | [diff] [blame] | 2310 | next = &spec_info->u.vmdk.data->extents; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2311 | for (i = 0; i < s->num_extents; i++) { |
| 2312 | *next = g_new0(ImageInfoList, 1); |
| 2313 | (*next)->value = vmdk_get_extent_info(&s->extents[i]); |
| 2314 | (*next)->next = NULL; |
| 2315 | next = &(*next)->next; |
| 2316 | } |
| 2317 | |
| 2318 | return spec_info; |
| 2319 | } |
| 2320 | |
Fam Zheng | 5f58330 | 2014-11-14 12:09:21 +0800 | [diff] [blame] | 2321 | static bool vmdk_extents_type_eq(const VmdkExtent *a, const VmdkExtent *b) |
| 2322 | { |
| 2323 | return a->flat == b->flat && |
| 2324 | a->compressed == b->compressed && |
| 2325 | (a->flat || a->cluster_sectors == b->cluster_sectors); |
| 2326 | } |
| 2327 | |
Fam Zheng | 74fe188 | 2014-05-06 21:08:45 +0800 | [diff] [blame] | 2328 | static int vmdk_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) |
| 2329 | { |
| 2330 | int i; |
| 2331 | BDRVVmdkState *s = bs->opaque; |
| 2332 | assert(s->num_extents); |
Fam Zheng | 5f58330 | 2014-11-14 12:09:21 +0800 | [diff] [blame] | 2333 | |
| 2334 | /* See if we have multiple extents but they have different cases */ |
| 2335 | for (i = 1; i < s->num_extents; i++) { |
| 2336 | if (!vmdk_extents_type_eq(&s->extents[0], &s->extents[i])) { |
| 2337 | return -ENOTSUP; |
| 2338 | } |
| 2339 | } |
Fam Zheng | 74fe188 | 2014-05-06 21:08:45 +0800 | [diff] [blame] | 2340 | bdi->needs_compressed_writes = s->extents[0].compressed; |
| 2341 | if (!s->extents[0].flat) { |
| 2342 | bdi->cluster_size = s->extents[0].cluster_sectors << BDRV_SECTOR_BITS; |
| 2343 | } |
Fam Zheng | 74fe188 | 2014-05-06 21:08:45 +0800 | [diff] [blame] | 2344 | return 0; |
| 2345 | } |
| 2346 | |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 2347 | static QemuOptsList vmdk_create_opts = { |
| 2348 | .name = "vmdk-create-opts", |
| 2349 | .head = QTAILQ_HEAD_INITIALIZER(vmdk_create_opts.head), |
| 2350 | .desc = { |
| 2351 | { |
| 2352 | .name = BLOCK_OPT_SIZE, |
| 2353 | .type = QEMU_OPT_SIZE, |
| 2354 | .help = "Virtual disk size" |
| 2355 | }, |
| 2356 | { |
| 2357 | .name = BLOCK_OPT_ADAPTER_TYPE, |
| 2358 | .type = QEMU_OPT_STRING, |
| 2359 | .help = "Virtual adapter type, can be one of " |
| 2360 | "ide (default), lsilogic, buslogic or legacyESX" |
| 2361 | }, |
| 2362 | { |
| 2363 | .name = BLOCK_OPT_BACKING_FILE, |
| 2364 | .type = QEMU_OPT_STRING, |
| 2365 | .help = "File name of a base image" |
| 2366 | }, |
| 2367 | { |
| 2368 | .name = BLOCK_OPT_COMPAT6, |
| 2369 | .type = QEMU_OPT_BOOL, |
| 2370 | .help = "VMDK version 6 image", |
| 2371 | .def_value_str = "off" |
| 2372 | }, |
| 2373 | { |
Janne Karhunen | f249924 | 2016-05-03 02:43:30 -0700 | [diff] [blame] | 2374 | .name = BLOCK_OPT_HWVERSION, |
| 2375 | .type = QEMU_OPT_STRING, |
| 2376 | .help = "VMDK hardware version", |
| 2377 | .def_value_str = "undefined" |
| 2378 | }, |
| 2379 | { |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 2380 | .name = BLOCK_OPT_SUBFMT, |
| 2381 | .type = QEMU_OPT_STRING, |
| 2382 | .help = |
| 2383 | "VMDK flat extent format, can be one of " |
| 2384 | "{monolithicSparse (default) | monolithicFlat | twoGbMaxExtentSparse | twoGbMaxExtentFlat | streamOptimized} " |
| 2385 | }, |
| 2386 | { |
| 2387 | .name = BLOCK_OPT_ZEROED_GRAIN, |
| 2388 | .type = QEMU_OPT_BOOL, |
| 2389 | .help = "Enable efficient zero writes " |
| 2390 | "using the zeroed-grain GTE feature" |
| 2391 | }, |
| 2392 | { /* end of list */ } |
| 2393 | } |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 2394 | }; |
| 2395 | |
Anthony Liguori | 5efa9d5 | 2009-05-09 17:03:42 -0500 | [diff] [blame] | 2396 | static BlockDriver bdrv_vmdk = { |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2397 | .format_name = "vmdk", |
| 2398 | .instance_size = sizeof(BDRVVmdkState), |
| 2399 | .bdrv_probe = vmdk_probe, |
| 2400 | .bdrv_open = vmdk_open, |
Paolo Bonzini | 2fd6163 | 2018-03-01 17:36:19 +0100 | [diff] [blame] | 2401 | .bdrv_co_check = vmdk_co_check, |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2402 | .bdrv_reopen_prepare = vmdk_reopen_prepare, |
Kevin Wolf | 862f215 | 2016-12-19 16:36:02 +0100 | [diff] [blame] | 2403 | .bdrv_child_perm = bdrv_format_default_perms, |
Kevin Wolf | f10cc24 | 2016-04-25 17:34:41 +0200 | [diff] [blame] | 2404 | .bdrv_co_preadv = vmdk_co_preadv, |
Kevin Wolf | 37b1d7d | 2016-04-26 13:39:11 +0200 | [diff] [blame] | 2405 | .bdrv_co_pwritev = vmdk_co_pwritev, |
Pavel Butsykin | b2c622d | 2016-07-22 11:17:45 +0300 | [diff] [blame] | 2406 | .bdrv_co_pwritev_compressed = vmdk_co_pwritev_compressed, |
Eric Blake | a620f2a | 2016-06-01 15:10:12 -0600 | [diff] [blame] | 2407 | .bdrv_co_pwrite_zeroes = vmdk_co_pwrite_zeroes, |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2408 | .bdrv_close = vmdk_close, |
Stefan Hajnoczi | efc75e2 | 2018-01-18 13:43:45 +0100 | [diff] [blame] | 2409 | .bdrv_co_create_opts = vmdk_co_create_opts, |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2410 | .bdrv_co_flush_to_disk = vmdk_co_flush, |
Eric Blake | c72080b | 2018-02-13 14:26:58 -0600 | [diff] [blame] | 2411 | .bdrv_co_block_status = vmdk_co_block_status, |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2412 | .bdrv_get_allocated_file_size = vmdk_get_allocated_file_size, |
| 2413 | .bdrv_has_zero_init = vmdk_has_zero_init, |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2414 | .bdrv_get_specific_info = vmdk_get_specific_info, |
Kevin Wolf | d34682c | 2013-12-11 19:26:16 +0100 | [diff] [blame] | 2415 | .bdrv_refresh_limits = vmdk_refresh_limits, |
Fam Zheng | 74fe188 | 2014-05-06 21:08:45 +0800 | [diff] [blame] | 2416 | .bdrv_get_info = vmdk_get_info, |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 2417 | |
Kevin Wolf | 8ee79e7 | 2014-06-04 15:09:35 +0200 | [diff] [blame] | 2418 | .supports_backing = true, |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 2419 | .create_opts = &vmdk_create_opts, |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 2420 | }; |
Anthony Liguori | 5efa9d5 | 2009-05-09 17:03:42 -0500 | [diff] [blame] | 2421 | |
| 2422 | static void bdrv_vmdk_init(void) |
| 2423 | { |
| 2424 | bdrv_register(&bdrv_vmdk); |
| 2425 | } |
| 2426 | |
| 2427 | block_init(bdrv_vmdk_init); |