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 | |
pbrook | faf0796 | 2007-11-11 02:51:17 +0000 | [diff] [blame] | 26 | #include "qemu-common.h" |
Paolo Bonzini | 737e150 | 2012-12-17 18:19:44 +0100 | [diff] [blame] | 27 | #include "block/block_int.h" |
Markus Armbruster | cc7a8ea | 2015-03-17 17:22:46 +0100 | [diff] [blame] | 28 | #include "qapi/qmp/qerror.h" |
Markus Armbruster | d49b683 | 2015-03-17 18:29:20 +0100 | [diff] [blame] | 29 | #include "qemu/error-report.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 30 | #include "qemu/module.h" |
Paolo Bonzini | caf71f8 | 2012-12-17 18:19:50 +0100 | [diff] [blame] | 31 | #include "migration/migration.h" |
Stefan Weil | 2923d34 | 2011-11-20 12:34:30 +0100 | [diff] [blame] | 32 | #include <zlib.h> |
Fam Zheng | e5dc64b | 2014-12-04 07:28:29 +0800 | [diff] [blame] | 33 | #include <glib.h> |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 34 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 35 | #define VMDK3_MAGIC (('C' << 24) | ('O' << 16) | ('W' << 8) | 'D') |
| 36 | #define VMDK4_MAGIC (('K' << 24) | ('D' << 16) | ('M' << 8) | 'V') |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 37 | #define VMDK4_COMPRESSION_DEFLATE 1 |
Fam Zheng | 95b0aa4 | 2013-05-02 10:25:25 +0800 | [diff] [blame] | 38 | #define VMDK4_FLAG_NL_DETECT (1 << 0) |
Fam Zheng | bb45ded | 2011-08-12 23:19:34 +0800 | [diff] [blame] | 39 | #define VMDK4_FLAG_RGD (1 << 1) |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 40 | /* Zeroed-grain enable bit */ |
| 41 | #define VMDK4_FLAG_ZERO_GRAIN (1 << 2) |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 42 | #define VMDK4_FLAG_COMPRESS (1 << 16) |
| 43 | #define VMDK4_FLAG_MARKER (1 << 17) |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 44 | #define VMDK4_GD_AT_END 0xffffffffffffffffULL |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 45 | |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 46 | #define VMDK_GTE_ZEROED 0x1 |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 47 | |
| 48 | /* VMDK internal error codes */ |
| 49 | #define VMDK_OK 0 |
| 50 | #define VMDK_ERROR (-1) |
| 51 | /* Cluster not allocated */ |
| 52 | #define VMDK_UNALLOC (-2) |
| 53 | #define VMDK_ZEROED (-3) |
| 54 | |
Fam Zheng | 69e0b6d | 2013-05-02 10:25:24 +0800 | [diff] [blame] | 55 | #define BLOCK_OPT_ZEROED_GRAIN "zeroed_grain" |
| 56 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 57 | typedef struct { |
| 58 | uint32_t version; |
| 59 | uint32_t flags; |
| 60 | uint32_t disk_sectors; |
| 61 | uint32_t granularity; |
| 62 | uint32_t l1dir_offset; |
| 63 | uint32_t l1dir_size; |
| 64 | uint32_t file_sectors; |
| 65 | uint32_t cylinders; |
| 66 | uint32_t heads; |
| 67 | uint32_t sectors_per_track; |
Fam Zheng | 5d8caa5 | 2013-08-06 15:44:47 +0800 | [diff] [blame] | 68 | } QEMU_PACKED VMDK3Header; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 69 | |
| 70 | typedef struct { |
| 71 | uint32_t version; |
| 72 | uint32_t flags; |
Fam Zheng | e98768d | 2013-08-06 15:44:48 +0800 | [diff] [blame] | 73 | uint64_t capacity; |
| 74 | uint64_t granularity; |
| 75 | uint64_t desc_offset; |
| 76 | uint64_t desc_size; |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 77 | /* Number of GrainTableEntries per GrainTable */ |
| 78 | uint32_t num_gtes_per_gt; |
Fam Zheng | e98768d | 2013-08-06 15:44:48 +0800 | [diff] [blame] | 79 | uint64_t rgd_offset; |
| 80 | uint64_t gd_offset; |
| 81 | uint64_t grain_offset; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 82 | char filler[1]; |
| 83 | char check_bytes[4]; |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 84 | uint16_t compressAlgorithm; |
Stefan Weil | 541dc0d | 2011-08-31 12:38:01 +0200 | [diff] [blame] | 85 | } QEMU_PACKED VMDK4Header; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 86 | |
| 87 | #define L2_CACHE_SIZE 16 |
| 88 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 89 | typedef struct VmdkExtent { |
| 90 | BlockDriverState *file; |
| 91 | bool flat; |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 92 | bool compressed; |
| 93 | bool has_marker; |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 94 | bool has_zero_grain; |
| 95 | int version; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 96 | int64_t sectors; |
| 97 | int64_t end_sector; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 98 | int64_t flat_start_offset; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 99 | int64_t l1_table_offset; |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 100 | int64_t l1_backup_table_offset; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 101 | uint32_t *l1_table; |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 102 | uint32_t *l1_backup_table; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 103 | unsigned int l1_size; |
| 104 | uint32_t l1_entry_sectors; |
| 105 | |
| 106 | unsigned int l2_size; |
| 107 | uint32_t *l2_cache; |
| 108 | uint32_t l2_cache_offsets[L2_CACHE_SIZE]; |
| 109 | uint32_t l2_cache_counts[L2_CACHE_SIZE]; |
| 110 | |
Fam Zheng | 301c7d3 | 2013-09-23 17:18:29 +0800 | [diff] [blame] | 111 | int64_t cluster_sectors; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 112 | int64_t next_cluster_sector; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 113 | char *type; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 114 | } VmdkExtent; |
| 115 | |
| 116 | typedef struct BDRVVmdkState { |
Paolo Bonzini | 848c66e | 2011-10-20 13:16:21 +0200 | [diff] [blame] | 117 | CoMutex lock; |
Fam Zheng | e98768d | 2013-08-06 15:44:48 +0800 | [diff] [blame] | 118 | uint64_t desc_offset; |
Fam Zheng | 69b4d86 | 2011-07-12 19:56:34 +0800 | [diff] [blame] | 119 | bool cid_updated; |
Fam Zheng | c338b6a | 2013-10-18 13:17:19 +0800 | [diff] [blame] | 120 | bool cid_checked; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 121 | uint32_t cid; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 122 | uint32_t parent_cid; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 123 | int num_extents; |
| 124 | /* Extent array with num_extents entries, ascend ordered by address */ |
| 125 | VmdkExtent *extents; |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 126 | Error *migration_blocker; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 127 | char *create_type; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 128 | } BDRVVmdkState; |
| 129 | |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 130 | typedef struct VmdkMetaData { |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 131 | unsigned int l1_index; |
| 132 | unsigned int l2_index; |
| 133 | unsigned int l2_offset; |
| 134 | int valid; |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 135 | uint32_t *l2_cache_entry; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 136 | } VmdkMetaData; |
| 137 | |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 138 | typedef struct VmdkGrainMarker { |
| 139 | uint64_t lba; |
| 140 | uint32_t size; |
| 141 | uint8_t data[0]; |
Fam Zheng | 5d8caa5 | 2013-08-06 15:44:47 +0800 | [diff] [blame] | 142 | } QEMU_PACKED VmdkGrainMarker; |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 143 | |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 144 | enum { |
| 145 | MARKER_END_OF_STREAM = 0, |
| 146 | MARKER_GRAIN_TABLE = 1, |
| 147 | MARKER_GRAIN_DIRECTORY = 2, |
| 148 | MARKER_FOOTER = 3, |
| 149 | }; |
| 150 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 151 | static int vmdk_probe(const uint8_t *buf, int buf_size, const char *filename) |
| 152 | { |
| 153 | uint32_t magic; |
| 154 | |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 155 | if (buf_size < 4) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 156 | return 0; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 157 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 158 | magic = be32_to_cpu(*(uint32_t *)buf); |
| 159 | if (magic == VMDK3_MAGIC || |
Fam Zheng | 01fc99d | 2011-07-12 19:56:30 +0800 | [diff] [blame] | 160 | magic == VMDK4_MAGIC) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 161 | return 100; |
Fam Zheng | 01fc99d | 2011-07-12 19:56:30 +0800 | [diff] [blame] | 162 | } else { |
| 163 | const char *p = (const char *)buf; |
| 164 | const char *end = p + buf_size; |
| 165 | while (p < end) { |
| 166 | if (*p == '#') { |
| 167 | /* skip comment line */ |
| 168 | while (p < end && *p != '\n') { |
| 169 | p++; |
| 170 | } |
| 171 | p++; |
| 172 | continue; |
| 173 | } |
| 174 | if (*p == ' ') { |
| 175 | while (p < end && *p == ' ') { |
| 176 | p++; |
| 177 | } |
| 178 | /* skip '\r' if windows line endings used. */ |
| 179 | if (p < end && *p == '\r') { |
| 180 | p++; |
| 181 | } |
| 182 | /* only accept blank lines before 'version=' line */ |
| 183 | if (p == end || *p != '\n') { |
| 184 | return 0; |
| 185 | } |
| 186 | p++; |
| 187 | continue; |
| 188 | } |
| 189 | if (end - p >= strlen("version=X\n")) { |
| 190 | if (strncmp("version=1\n", p, strlen("version=1\n")) == 0 || |
| 191 | strncmp("version=2\n", p, strlen("version=2\n")) == 0) { |
| 192 | return 100; |
| 193 | } |
| 194 | } |
| 195 | if (end - p >= strlen("version=X\r\n")) { |
| 196 | if (strncmp("version=1\r\n", p, strlen("version=1\r\n")) == 0 || |
| 197 | strncmp("version=2\r\n", p, strlen("version=2\r\n")) == 0) { |
| 198 | return 100; |
| 199 | } |
| 200 | } |
| 201 | return 0; |
| 202 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 203 | return 0; |
Fam Zheng | 01fc99d | 2011-07-12 19:56:30 +0800 | [diff] [blame] | 204 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 205 | } |
| 206 | |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 207 | #define SECTOR_SIZE 512 |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 208 | #define DESC_SIZE (20 * SECTOR_SIZE) /* 20 sectors of 512 bytes each */ |
| 209 | #define BUF_SIZE 4096 |
| 210 | #define HEADER_SIZE 512 /* first sector of 512 bytes */ |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 211 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 212 | static void vmdk_free_extents(BlockDriverState *bs) |
| 213 | { |
| 214 | int i; |
| 215 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | b3c0bfb | 2011-09-19 10:26:42 +0800 | [diff] [blame] | 216 | VmdkExtent *e; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 217 | |
| 218 | for (i = 0; i < s->num_extents; i++) { |
Fam Zheng | b3c0bfb | 2011-09-19 10:26:42 +0800 | [diff] [blame] | 219 | e = &s->extents[i]; |
| 220 | g_free(e->l1_table); |
| 221 | g_free(e->l2_cache); |
| 222 | g_free(e->l1_backup_table); |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 223 | g_free(e->type); |
Fam Zheng | b3c0bfb | 2011-09-19 10:26:42 +0800 | [diff] [blame] | 224 | if (e->file != bs->file) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 225 | bdrv_unref(e->file); |
Fam Zheng | b3c0bfb | 2011-09-19 10:26:42 +0800 | [diff] [blame] | 226 | } |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 227 | } |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 228 | g_free(s->extents); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 229 | } |
| 230 | |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 231 | static void vmdk_free_last_extent(BlockDriverState *bs) |
| 232 | { |
| 233 | BDRVVmdkState *s = bs->opaque; |
| 234 | |
| 235 | if (s->num_extents == 0) { |
| 236 | return; |
| 237 | } |
| 238 | s->num_extents--; |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 239 | s->extents = g_renew(VmdkExtent, s->extents, s->num_extents); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 240 | } |
| 241 | |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 242 | static uint32_t vmdk_read_cid(BlockDriverState *bs, int parent) |
| 243 | { |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 244 | char desc[DESC_SIZE]; |
Pavel Borzenkov | 8379e46 | 2011-10-18 21:19:03 +0400 | [diff] [blame] | 245 | uint32_t cid = 0xffffffff; |
blueswir1 | 7ccfb2e | 2008-09-14 06:45:34 +0000 | [diff] [blame] | 246 | const char *p_name, *cid_str; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 247 | size_t cid_str_size; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 248 | BDRVVmdkState *s = bs->opaque; |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 249 | int ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 250 | |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 251 | ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); |
| 252 | if (ret < 0) { |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 253 | return 0; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 254 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 255 | |
| 256 | if (parent) { |
| 257 | cid_str = "parentCID"; |
| 258 | cid_str_size = sizeof("parentCID"); |
| 259 | } else { |
| 260 | cid_str = "CID"; |
| 261 | cid_str_size = sizeof("CID"); |
| 262 | } |
| 263 | |
Kevin Wolf | 93897b9 | 2011-10-26 12:25:52 +0200 | [diff] [blame] | 264 | desc[DESC_SIZE - 1] = '\0'; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 265 | p_name = strstr(desc, cid_str); |
| 266 | if (p_name != NULL) { |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 267 | p_name += cid_str_size; |
Fam Zheng | 9b17031 | 2014-04-17 18:43:53 +0800 | [diff] [blame] | 268 | sscanf(p_name, "%" SCNx32, &cid); |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | return cid; |
| 272 | } |
| 273 | |
| 274 | static int vmdk_write_cid(BlockDriverState *bs, uint32_t cid) |
| 275 | { |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 276 | char desc[DESC_SIZE], tmp_desc[DESC_SIZE]; |
| 277 | char *p_name, *tmp_str; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 278 | BDRVVmdkState *s = bs->opaque; |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 279 | int ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 280 | |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 281 | ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); |
| 282 | if (ret < 0) { |
| 283 | return ret; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 284 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 285 | |
Kevin Wolf | 93897b9 | 2011-10-26 12:25:52 +0200 | [diff] [blame] | 286 | desc[DESC_SIZE - 1] = '\0'; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 287 | tmp_str = strstr(desc, "parentCID"); |
Kevin Wolf | 93897b9 | 2011-10-26 12:25:52 +0200 | [diff] [blame] | 288 | if (tmp_str == NULL) { |
| 289 | return -EINVAL; |
| 290 | } |
| 291 | |
blueswir1 | 363a37d | 2008-08-21 17:58:08 +0000 | [diff] [blame] | 292 | pstrcpy(tmp_desc, sizeof(tmp_desc), tmp_str); |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 293 | p_name = strstr(desc, "CID"); |
| 294 | if (p_name != NULL) { |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 295 | p_name += sizeof("CID"); |
Fam Zheng | 9b17031 | 2014-04-17 18:43:53 +0800 | [diff] [blame] | 296 | snprintf(p_name, sizeof(desc) - (p_name - desc), "%" PRIx32 "\n", cid); |
blueswir1 | 363a37d | 2008-08-21 17:58:08 +0000 | [diff] [blame] | 297 | pstrcat(desc, sizeof(desc), tmp_desc); |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 298 | } |
| 299 | |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 300 | ret = bdrv_pwrite_sync(bs->file, s->desc_offset, desc, DESC_SIZE); |
| 301 | if (ret < 0) { |
| 302 | return ret; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 303 | } |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 304 | |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 305 | return 0; |
| 306 | } |
| 307 | |
| 308 | static int vmdk_is_cid_valid(BlockDriverState *bs) |
| 309 | { |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 310 | BDRVVmdkState *s = bs->opaque; |
Kevin Wolf | b171271 | 2009-07-17 08:20:41 +0200 | [diff] [blame] | 311 | BlockDriverState *p_bs = bs->backing_hd; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 312 | uint32_t cur_pcid; |
| 313 | |
Fam Zheng | c338b6a | 2013-10-18 13:17:19 +0800 | [diff] [blame] | 314 | if (!s->cid_checked && p_bs) { |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 315 | cur_pcid = vmdk_read_cid(p_bs, 0); |
| 316 | if (s->parent_cid != cur_pcid) { |
| 317 | /* CID not valid */ |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 318 | return 0; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 319 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 320 | } |
Fam Zheng | c338b6a | 2013-10-18 13:17:19 +0800 | [diff] [blame] | 321 | s->cid_checked = true; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 322 | /* CID valid */ |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 323 | return 1; |
| 324 | } |
| 325 | |
Kevin Wolf | 67251a3 | 2015-04-09 18:54:04 +0200 | [diff] [blame] | 326 | /* We have nothing to do for VMDK reopen, stubs just return success */ |
Jeff Cody | 3897575 | 2012-09-20 15:13:30 -0400 | [diff] [blame] | 327 | static int vmdk_reopen_prepare(BDRVReopenState *state, |
| 328 | BlockReopenQueue *queue, Error **errp) |
| 329 | { |
Jeff Cody | 3897575 | 2012-09-20 15:13:30 -0400 | [diff] [blame] | 330 | assert(state != NULL); |
| 331 | assert(state->bs != NULL); |
Kevin Wolf | 67251a3 | 2015-04-09 18:54:04 +0200 | [diff] [blame] | 332 | return 0; |
Jeff Cody | 3897575 | 2012-09-20 15:13:30 -0400 | [diff] [blame] | 333 | } |
| 334 | |
Kevin Wolf | 9949f97 | 2010-04-16 21:07:19 +0200 | [diff] [blame] | 335 | static int vmdk_parent_open(BlockDriverState *bs) |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 336 | { |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 337 | char *p_name; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 338 | char desc[DESC_SIZE + 1]; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 339 | BDRVVmdkState *s = bs->opaque; |
Paolo Bonzini | 588b65a | 2011-10-20 13:16:19 +0200 | [diff] [blame] | 340 | int ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 341 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 342 | desc[DESC_SIZE] = '\0'; |
Paolo Bonzini | 588b65a | 2011-10-20 13:16:19 +0200 | [diff] [blame] | 343 | ret = bdrv_pread(bs->file, s->desc_offset, desc, DESC_SIZE); |
| 344 | if (ret < 0) { |
| 345 | return ret; |
Fam Zheng | e1da9b2 | 2011-07-12 19:56:32 +0800 | [diff] [blame] | 346 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 347 | |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 348 | p_name = strstr(desc, "parentFileNameHint"); |
| 349 | if (p_name != NULL) { |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 350 | char *end_name; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 351 | |
| 352 | p_name += sizeof("parentFileNameHint") + 1; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 353 | end_name = strchr(p_name, '\"'); |
| 354 | if (end_name == NULL) { |
Paolo Bonzini | 588b65a | 2011-10-20 13:16:19 +0200 | [diff] [blame] | 355 | return -EINVAL; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 356 | } |
| 357 | if ((end_name - p_name) > sizeof(bs->backing_file) - 1) { |
Paolo Bonzini | 588b65a | 2011-10-20 13:16:19 +0200 | [diff] [blame] | 358 | return -EINVAL; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 359 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 360 | |
Kevin Wolf | b171271 | 2009-07-17 08:20:41 +0200 | [diff] [blame] | 361 | pstrcpy(bs->backing_file, end_name - p_name + 1, p_name); |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 362 | } |
| 363 | |
| 364 | return 0; |
| 365 | } |
| 366 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 367 | /* Create and append extent to the extent array. Return the added VmdkExtent |
| 368 | * address. return NULL if allocation failed. */ |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 369 | static int vmdk_add_extent(BlockDriverState *bs, |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 370 | BlockDriverState *file, bool flat, int64_t sectors, |
| 371 | int64_t l1_offset, int64_t l1_backup_offset, |
| 372 | uint32_t l1_size, |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 373 | int l2_size, uint64_t cluster_sectors, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 374 | VmdkExtent **new_extent, |
| 375 | Error **errp) |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 376 | { |
| 377 | VmdkExtent *extent; |
| 378 | BDRVVmdkState *s = bs->opaque; |
Markus Armbruster | 0a156f7 | 2014-08-21 14:36:19 +0200 | [diff] [blame] | 379 | int64_t nb_sectors; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 380 | |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 381 | if (cluster_sectors > 0x200000) { |
| 382 | /* 0x200000 * 512Bytes = 1GB for one cluster is unrealistic */ |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 383 | error_setg(errp, "Invalid granularity, image may be corrupt"); |
| 384 | return -EFBIG; |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 385 | } |
Fam Zheng | b0651b8 | 2013-08-19 18:54:25 +0800 | [diff] [blame] | 386 | if (l1_size > 512 * 1024 * 1024) { |
| 387 | /* Although with big capacity and small l1_entry_sectors, we can get a |
| 388 | * big l1_size, we don't want unbounded value to allocate the table. |
| 389 | * Limit it to 512M, which is 16PB for default cluster and L2 table |
| 390 | * size */ |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 391 | error_setg(errp, "L1 size too big"); |
Fam Zheng | b0651b8 | 2013-08-19 18:54:25 +0800 | [diff] [blame] | 392 | return -EFBIG; |
| 393 | } |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 394 | |
Markus Armbruster | 0a156f7 | 2014-08-21 14:36:19 +0200 | [diff] [blame] | 395 | nb_sectors = bdrv_nb_sectors(file); |
| 396 | if (nb_sectors < 0) { |
| 397 | return nb_sectors; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 398 | } |
| 399 | |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 400 | s->extents = g_renew(VmdkExtent, s->extents, s->num_extents + 1); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 401 | extent = &s->extents[s->num_extents]; |
| 402 | s->num_extents++; |
| 403 | |
| 404 | memset(extent, 0, sizeof(VmdkExtent)); |
| 405 | extent->file = file; |
| 406 | extent->flat = flat; |
| 407 | extent->sectors = sectors; |
| 408 | extent->l1_table_offset = l1_offset; |
| 409 | extent->l1_backup_table_offset = l1_backup_offset; |
| 410 | extent->l1_size = l1_size; |
| 411 | extent->l1_entry_sectors = l2_size * cluster_sectors; |
| 412 | extent->l2_size = l2_size; |
Fam Zheng | 301c7d3 | 2013-09-23 17:18:29 +0800 | [diff] [blame] | 413 | extent->cluster_sectors = flat ? sectors : cluster_sectors; |
Markus Armbruster | 0a156f7 | 2014-08-21 14:36:19 +0200 | [diff] [blame] | 414 | extent->next_cluster_sector = ROUND_UP(nb_sectors, cluster_sectors); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 415 | |
| 416 | if (s->num_extents > 1) { |
| 417 | extent->end_sector = (*(extent - 1)).end_sector + extent->sectors; |
| 418 | } else { |
| 419 | extent->end_sector = extent->sectors; |
| 420 | } |
| 421 | bs->total_sectors = extent->end_sector; |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 422 | if (new_extent) { |
| 423 | *new_extent = extent; |
| 424 | } |
| 425 | return 0; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 426 | } |
| 427 | |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 428 | static int vmdk_init_tables(BlockDriverState *bs, VmdkExtent *extent, |
| 429 | Error **errp) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 430 | { |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 431 | int ret; |
Fam Zheng | 13c4941 | 2015-05-05 17:28:13 +0800 | [diff] [blame] | 432 | size_t l1_size; |
| 433 | int i; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 434 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 435 | /* read the L1 table */ |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 436 | l1_size = extent->l1_size * sizeof(uint32_t); |
Kevin Wolf | d6e5993 | 2014-05-20 13:56:27 +0200 | [diff] [blame] | 437 | extent->l1_table = g_try_malloc(l1_size); |
| 438 | if (l1_size && extent->l1_table == NULL) { |
| 439 | return -ENOMEM; |
| 440 | } |
| 441 | |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 442 | ret = bdrv_pread(extent->file, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 443 | extent->l1_table_offset, |
| 444 | extent->l1_table, |
| 445 | l1_size); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 446 | if (ret < 0) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 447 | error_setg_errno(errp, -ret, |
| 448 | "Could not read l1 table from extent '%s'", |
| 449 | extent->file->filename); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 450 | goto fail_l1; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 451 | } |
| 452 | for (i = 0; i < extent->l1_size; i++) { |
| 453 | le32_to_cpus(&extent->l1_table[i]); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 454 | } |
| 455 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 456 | if (extent->l1_backup_table_offset) { |
Kevin Wolf | d6e5993 | 2014-05-20 13:56:27 +0200 | [diff] [blame] | 457 | extent->l1_backup_table = g_try_malloc(l1_size); |
| 458 | if (l1_size && extent->l1_backup_table == NULL) { |
| 459 | ret = -ENOMEM; |
| 460 | goto fail_l1; |
| 461 | } |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 462 | ret = bdrv_pread(extent->file, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 463 | extent->l1_backup_table_offset, |
| 464 | extent->l1_backup_table, |
| 465 | l1_size); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 466 | if (ret < 0) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 467 | error_setg_errno(errp, -ret, |
| 468 | "Could not read l1 backup table from extent '%s'", |
| 469 | extent->file->filename); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 470 | goto fail_l1b; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 471 | } |
| 472 | for (i = 0; i < extent->l1_size; i++) { |
| 473 | le32_to_cpus(&extent->l1_backup_table[i]); |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 474 | } |
| 475 | } |
| 476 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 477 | extent->l2_cache = |
Markus Armbruster | 5839e53 | 2014-08-19 10:31:08 +0200 | [diff] [blame] | 478 | g_new(uint32_t, extent->l2_size * L2_CACHE_SIZE); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 479 | return 0; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 480 | fail_l1b: |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 481 | g_free(extent->l1_backup_table); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 482 | fail_l1: |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 483 | g_free(extent->l1_table); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 484 | return ret; |
| 485 | } |
| 486 | |
Fam Zheng | daac8fd | 2013-08-19 18:54:27 +0800 | [diff] [blame] | 487 | static int vmdk_open_vmfs_sparse(BlockDriverState *bs, |
| 488 | BlockDriverState *file, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 489 | int flags, Error **errp) |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 490 | { |
| 491 | int ret; |
| 492 | uint32_t magic; |
| 493 | VMDK3Header header; |
| 494 | VmdkExtent *extent; |
| 495 | |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 496 | ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header)); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 497 | if (ret < 0) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 498 | error_setg_errno(errp, -ret, |
| 499 | "Could not read header from file '%s'", |
| 500 | file->filename); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 501 | return ret; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 502 | } |
Fam Zheng | f6b61e5 | 2013-08-19 18:54:26 +0800 | [diff] [blame] | 503 | ret = vmdk_add_extent(bs, file, false, |
| 504 | le32_to_cpu(header.disk_sectors), |
Fam Zheng | 7237aec | 2015-04-27 22:23:01 +0800 | [diff] [blame] | 505 | (int64_t)le32_to_cpu(header.l1dir_offset) << 9, |
Fam Zheng | f6b61e5 | 2013-08-19 18:54:26 +0800 | [diff] [blame] | 506 | 0, |
| 507 | le32_to_cpu(header.l1dir_size), |
| 508 | 4096, |
| 509 | le32_to_cpu(header.granularity), |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 510 | &extent, |
| 511 | errp); |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 512 | if (ret < 0) { |
| 513 | return ret; |
| 514 | } |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 515 | ret = vmdk_init_tables(bs, extent, errp); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 516 | if (ret) { |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 517 | /* free extent allocated by vmdk_add_extent */ |
| 518 | vmdk_free_last_extent(bs); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 519 | } |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 520 | return ret; |
| 521 | } |
| 522 | |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 523 | static int vmdk_open_desc_file(BlockDriverState *bs, int flags, char *buf, |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 524 | QDict *options, Error **errp); |
Fam Zheng | f16f509 | 2011-08-12 23:19:33 +0800 | [diff] [blame] | 525 | |
Paolo Bonzini | a8842e6 | 2014-02-17 14:44:02 +0100 | [diff] [blame] | 526 | static char *vmdk_read_desc(BlockDriverState *file, uint64_t desc_offset, |
| 527 | Error **errp) |
| 528 | { |
| 529 | int64_t size; |
| 530 | char *buf; |
| 531 | int ret; |
| 532 | |
| 533 | size = bdrv_getlength(file); |
| 534 | if (size < 0) { |
| 535 | error_setg_errno(errp, -size, "Could not access file"); |
| 536 | return NULL; |
| 537 | } |
| 538 | |
Fam Zheng | 03c3359 | 2014-12-04 07:28:32 +0800 | [diff] [blame] | 539 | if (size < 4) { |
| 540 | /* Both descriptor file and sparse image must be much larger than 4 |
| 541 | * bytes, also callers of vmdk_read_desc want to compare the first 4 |
| 542 | * bytes with VMDK4_MAGIC, let's error out if less is read. */ |
| 543 | error_setg(errp, "File is too small, not a valid image"); |
| 544 | return NULL; |
| 545 | } |
| 546 | |
Fam Zheng | 73b7bca | 2014-12-04 07:28:31 +0800 | [diff] [blame] | 547 | size = MIN(size, (1 << 20) - 1); /* avoid unbounded allocation */ |
| 548 | buf = g_malloc(size + 1); |
Paolo Bonzini | a8842e6 | 2014-02-17 14:44:02 +0100 | [diff] [blame] | 549 | |
| 550 | ret = bdrv_pread(file, desc_offset, buf, size); |
| 551 | if (ret < 0) { |
| 552 | error_setg_errno(errp, -ret, "Could not read from file"); |
| 553 | g_free(buf); |
| 554 | return NULL; |
| 555 | } |
Fam Zheng | 73b7bca | 2014-12-04 07:28:31 +0800 | [diff] [blame] | 556 | buf[ret] = 0; |
Paolo Bonzini | a8842e6 | 2014-02-17 14:44:02 +0100 | [diff] [blame] | 557 | |
| 558 | return buf; |
| 559 | } |
| 560 | |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 561 | static int vmdk_open_vmdk4(BlockDriverState *bs, |
| 562 | BlockDriverState *file, |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 563 | int flags, QDict *options, Error **errp) |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 564 | { |
| 565 | int ret; |
| 566 | uint32_t magic; |
| 567 | uint32_t l1_size, l1_entry_sectors; |
| 568 | VMDK4Header header; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 569 | VmdkExtent *extent; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 570 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | bb45ded | 2011-08-12 23:19:34 +0800 | [diff] [blame] | 571 | int64_t l1_backup_offset = 0; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 572 | |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 573 | ret = bdrv_pread(file, sizeof(magic), &header, sizeof(header)); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 574 | if (ret < 0) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 575 | error_setg_errno(errp, -ret, |
| 576 | "Could not read header from file '%s'", |
| 577 | file->filename); |
Paolo Bonzini | 89ac848 | 2014-02-17 14:44:05 +0100 | [diff] [blame] | 578 | return -EINVAL; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 579 | } |
Stefan Hajnoczi | 5a394b9 | 2013-06-10 11:07:33 +0200 | [diff] [blame] | 580 | if (header.capacity == 0) { |
Fam Zheng | e98768d | 2013-08-06 15:44:48 +0800 | [diff] [blame] | 581 | uint64_t desc_offset = le64_to_cpu(header.desc_offset); |
Stefan Hajnoczi | 5a394b9 | 2013-06-10 11:07:33 +0200 | [diff] [blame] | 582 | if (desc_offset) { |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 583 | char *buf = vmdk_read_desc(file, desc_offset << 9, errp); |
| 584 | if (!buf) { |
| 585 | return -EINVAL; |
| 586 | } |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 587 | ret = vmdk_open_desc_file(bs, flags, buf, options, errp); |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 588 | g_free(buf); |
| 589 | return ret; |
Stefan Hajnoczi | 5a394b9 | 2013-06-10 11:07:33 +0200 | [diff] [blame] | 590 | } |
Fam Zheng | f16f509 | 2011-08-12 23:19:33 +0800 | [diff] [blame] | 591 | } |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 592 | |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 593 | if (!s->create_type) { |
| 594 | s->create_type = g_strdup("monolithicSparse"); |
| 595 | } |
| 596 | |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 597 | if (le64_to_cpu(header.gd_offset) == VMDK4_GD_AT_END) { |
| 598 | /* |
| 599 | * The footer takes precedence over the header, so read it in. The |
| 600 | * footer starts at offset -1024 from the end: One sector for the |
| 601 | * footer, and another one for the end-of-stream marker. |
| 602 | */ |
| 603 | struct { |
| 604 | struct { |
| 605 | uint64_t val; |
| 606 | uint32_t size; |
| 607 | uint32_t type; |
| 608 | uint8_t pad[512 - 16]; |
| 609 | } QEMU_PACKED footer_marker; |
| 610 | |
| 611 | uint32_t magic; |
| 612 | VMDK4Header header; |
| 613 | uint8_t pad[512 - 4 - sizeof(VMDK4Header)]; |
| 614 | |
| 615 | struct { |
| 616 | uint64_t val; |
| 617 | uint32_t size; |
| 618 | uint32_t type; |
| 619 | uint8_t pad[512 - 16]; |
| 620 | } QEMU_PACKED eos_marker; |
| 621 | } QEMU_PACKED footer; |
| 622 | |
| 623 | ret = bdrv_pread(file, |
| 624 | bs->file->total_sectors * 512 - 1536, |
| 625 | &footer, sizeof(footer)); |
| 626 | if (ret < 0) { |
Fam Zheng | d899d2e | 2014-12-04 07:28:34 +0800 | [diff] [blame] | 627 | error_setg_errno(errp, -ret, "Failed to read footer"); |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 628 | return ret; |
| 629 | } |
| 630 | |
| 631 | /* Some sanity checks for the footer */ |
| 632 | if (be32_to_cpu(footer.magic) != VMDK4_MAGIC || |
| 633 | le32_to_cpu(footer.footer_marker.size) != 0 || |
| 634 | le32_to_cpu(footer.footer_marker.type) != MARKER_FOOTER || |
| 635 | le64_to_cpu(footer.eos_marker.val) != 0 || |
| 636 | le32_to_cpu(footer.eos_marker.size) != 0 || |
| 637 | le32_to_cpu(footer.eos_marker.type) != MARKER_END_OF_STREAM) |
| 638 | { |
Fam Zheng | d899d2e | 2014-12-04 07:28:34 +0800 | [diff] [blame] | 639 | error_setg(errp, "Invalid footer"); |
Kevin Wolf | 65bd155 | 2012-08-16 10:39:33 +0200 | [diff] [blame] | 640 | return -EINVAL; |
| 641 | } |
| 642 | |
| 643 | header = footer.header; |
| 644 | } |
| 645 | |
Fam Zheng | 509d39a | 2013-11-28 09:48:03 +0800 | [diff] [blame] | 646 | if (le32_to_cpu(header.version) > 3) { |
Fam Zheng | 96c51eb | 2013-06-13 11:21:29 +0800 | [diff] [blame] | 647 | char buf[64]; |
Fam Zheng | 4ab9dab | 2014-04-17 11:34:37 +0800 | [diff] [blame] | 648 | snprintf(buf, sizeof(buf), "VMDK version %" PRId32, |
Fam Zheng | 96c51eb | 2013-06-13 11:21:29 +0800 | [diff] [blame] | 649 | le32_to_cpu(header.version)); |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 650 | error_setg(errp, QERR_UNKNOWN_BLOCK_FORMAT_FEATURE, |
| 651 | bdrv_get_device_or_node_name(bs), "vmdk", buf); |
Fam Zheng | 96c51eb | 2013-06-13 11:21:29 +0800 | [diff] [blame] | 652 | return -ENOTSUP; |
Fam Zheng | 509d39a | 2013-11-28 09:48:03 +0800 | [diff] [blame] | 653 | } else if (le32_to_cpu(header.version) == 3 && (flags & BDRV_O_RDWR)) { |
| 654 | /* VMware KB 2064959 explains that version 3 added support for |
| 655 | * persistent changed block tracking (CBT), and backup software can |
| 656 | * read it as version=1 if it doesn't care about the changed area |
| 657 | * information. So we are safe to enable read only. */ |
| 658 | error_setg(errp, "VMDK version 3 must be read only"); |
| 659 | return -EINVAL; |
Fam Zheng | 96c51eb | 2013-06-13 11:21:29 +0800 | [diff] [blame] | 660 | } |
| 661 | |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 662 | if (le32_to_cpu(header.num_gtes_per_gt) > 512) { |
Paolo Bonzini | 89ac848 | 2014-02-17 14:44:05 +0100 | [diff] [blame] | 663 | error_setg(errp, "L2 table size too big"); |
Fam Zheng | f8ce040 | 2013-08-06 15:44:52 +0800 | [diff] [blame] | 664 | return -EINVAL; |
| 665 | } |
| 666 | |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 667 | l1_entry_sectors = le32_to_cpu(header.num_gtes_per_gt) |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 668 | * le64_to_cpu(header.granularity); |
Stefan Weil | 75d1234 | 2012-02-25 14:01:42 +0100 | [diff] [blame] | 669 | if (l1_entry_sectors == 0) { |
Fam Zheng | d899d2e | 2014-12-04 07:28:34 +0800 | [diff] [blame] | 670 | error_setg(errp, "L1 entry size is invalid"); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 671 | return -EINVAL; |
| 672 | } |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 673 | l1_size = (le64_to_cpu(header.capacity) + l1_entry_sectors - 1) |
| 674 | / l1_entry_sectors; |
Fam Zheng | bb45ded | 2011-08-12 23:19:34 +0800 | [diff] [blame] | 675 | if (le32_to_cpu(header.flags) & VMDK4_FLAG_RGD) { |
| 676 | l1_backup_offset = le64_to_cpu(header.rgd_offset) << 9; |
| 677 | } |
Markus Armbruster | 57322b7 | 2014-06-26 13:23:22 +0200 | [diff] [blame] | 678 | if (bdrv_nb_sectors(file) < le64_to_cpu(header.grain_offset)) { |
Fam Zheng | 4ab9dab | 2014-04-17 11:34:37 +0800 | [diff] [blame] | 679 | error_setg(errp, "File truncated, expecting at least %" PRId64 " bytes", |
| 680 | (int64_t)(le64_to_cpu(header.grain_offset) |
| 681 | * BDRV_SECTOR_SIZE)); |
Fam Zheng | 34ceed8 | 2014-01-21 15:07:43 +0800 | [diff] [blame] | 682 | return -EINVAL; |
| 683 | } |
| 684 | |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 685 | ret = vmdk_add_extent(bs, file, false, |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 686 | le64_to_cpu(header.capacity), |
| 687 | le64_to_cpu(header.gd_offset) << 9, |
Fam Zheng | bb45ded | 2011-08-12 23:19:34 +0800 | [diff] [blame] | 688 | l1_backup_offset, |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 689 | l1_size, |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 690 | le32_to_cpu(header.num_gtes_per_gt), |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 691 | le64_to_cpu(header.granularity), |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 692 | &extent, |
| 693 | errp); |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 694 | if (ret < 0) { |
| 695 | return ret; |
| 696 | } |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 697 | extent->compressed = |
| 698 | le16_to_cpu(header.compressAlgorithm) == VMDK4_COMPRESSION_DEFLATE; |
Fam Zheng | d8a7b06 | 2014-01-23 15:10:52 +0800 | [diff] [blame] | 699 | if (extent->compressed) { |
| 700 | g_free(s->create_type); |
| 701 | s->create_type = g_strdup("streamOptimized"); |
| 702 | } |
Fam Zheng | 432bb17 | 2011-08-12 23:19:30 +0800 | [diff] [blame] | 703 | extent->has_marker = le32_to_cpu(header.flags) & VMDK4_FLAG_MARKER; |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 704 | extent->version = le32_to_cpu(header.version); |
| 705 | 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] | 706 | ret = vmdk_init_tables(bs, extent, errp); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 707 | if (ret) { |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 708 | /* free extent allocated by vmdk_add_extent */ |
| 709 | vmdk_free_last_extent(bs); |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 710 | } |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 711 | return ret; |
| 712 | } |
| 713 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 714 | /* find an option value out of descriptor file */ |
| 715 | static int vmdk_parse_description(const char *desc, const char *opt_name, |
| 716 | char *buf, int buf_size) |
| 717 | { |
| 718 | char *opt_pos, *opt_end; |
| 719 | const char *end = desc + strlen(desc); |
| 720 | |
| 721 | opt_pos = strstr(desc, opt_name); |
| 722 | if (!opt_pos) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 723 | return VMDK_ERROR; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 724 | } |
| 725 | /* Skip "=\"" following opt_name */ |
| 726 | opt_pos += strlen(opt_name) + 2; |
| 727 | if (opt_pos >= end) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 728 | return VMDK_ERROR; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 729 | } |
| 730 | opt_end = opt_pos; |
| 731 | while (opt_end < end && *opt_end != '"') { |
| 732 | opt_end++; |
| 733 | } |
| 734 | if (opt_end == end || buf_size < opt_end - opt_pos + 1) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 735 | return VMDK_ERROR; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 736 | } |
| 737 | pstrcpy(buf, opt_end - opt_pos + 1, opt_pos); |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 738 | return VMDK_OK; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 739 | } |
| 740 | |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 741 | /* Open an extent file and append to bs array */ |
| 742 | static int vmdk_open_sparse(BlockDriverState *bs, |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 743 | BlockDriverState *file, int flags, |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 744 | char *buf, QDict *options, Error **errp) |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 745 | { |
| 746 | uint32_t magic; |
| 747 | |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 748 | magic = ldl_be_p(buf); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 749 | switch (magic) { |
| 750 | case VMDK3_MAGIC: |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 751 | return vmdk_open_vmfs_sparse(bs, file, flags, errp); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 752 | break; |
| 753 | case VMDK4_MAGIC: |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 754 | return vmdk_open_vmdk4(bs, file, flags, options, errp); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 755 | break; |
| 756 | default: |
Paolo Bonzini | 76abe40 | 2014-02-17 14:44:06 +0100 | [diff] [blame] | 757 | error_setg(errp, "Image not in VMDK format"); |
| 758 | return -EINVAL; |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 759 | break; |
| 760 | } |
| 761 | } |
| 762 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 763 | static int vmdk_parse_extents(const char *desc, BlockDriverState *bs, |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 764 | const char *desc_file_path, QDict *options, |
| 765 | Error **errp) |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 766 | { |
| 767 | int ret; |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 768 | int matches; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 769 | char access[11]; |
| 770 | char type[11]; |
| 771 | char fname[512]; |
| 772 | const char *p = desc; |
| 773 | int64_t sectors = 0; |
| 774 | int64_t flat_offset; |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 775 | char *extent_path; |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 776 | BlockDriverState *extent_file; |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 777 | BDRVVmdkState *s = bs->opaque; |
| 778 | VmdkExtent *extent; |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 779 | char extent_opt_prefix[32]; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 780 | |
| 781 | while (*p) { |
Fam Zheng | 8a3e0bc | 2014-12-04 07:28:30 +0800 | [diff] [blame] | 782 | /* parse extent line in one of below formats: |
| 783 | * |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 784 | * RW [size in sectors] FLAT "file-name.vmdk" OFFSET |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 785 | * RW [size in sectors] SPARSE "file-name.vmdk" |
Fam Zheng | 8a3e0bc | 2014-12-04 07:28:30 +0800 | [diff] [blame] | 786 | * RW [size in sectors] VMFS "file-name.vmdk" |
| 787 | * RW [size in sectors] VMFSSPARSE "file-name.vmdk" |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 788 | */ |
| 789 | flat_offset = -1; |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 790 | matches = sscanf(p, "%10s %" SCNd64 " %10s \"%511[^\n\r\"]\" %" SCNd64, |
| 791 | access, §ors, type, fname, &flat_offset); |
| 792 | if (matches < 4 || strcmp(access, "RW")) { |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 793 | goto next_line; |
| 794 | } else if (!strcmp(type, "FLAT")) { |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 795 | if (matches != 5 || flat_offset < 0) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 796 | error_setg(errp, "Invalid extent lines: \n%s", p); |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 797 | return -EINVAL; |
| 798 | } |
Fam Zheng | dbbcaa8 | 2013-10-18 15:07:33 +0800 | [diff] [blame] | 799 | } else if (!strcmp(type, "VMFS")) { |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 800 | if (matches == 4) { |
Fam Zheng | b47053b | 2013-12-09 13:24:36 +0800 | [diff] [blame] | 801 | flat_offset = 0; |
| 802 | } else { |
| 803 | error_setg(errp, "Invalid extent lines:\n%s", p); |
| 804 | return -EINVAL; |
| 805 | } |
Jeff Cody | 395a22f | 2015-01-22 08:03:25 -0500 | [diff] [blame] | 806 | } else if (matches != 4) { |
Fam Zheng | b47053b | 2013-12-09 13:24:36 +0800 | [diff] [blame] | 807 | error_setg(errp, "Invalid extent lines:\n%s", p); |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 808 | return -EINVAL; |
| 809 | } |
| 810 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 811 | if (sectors <= 0 || |
Fam Zheng | daac8fd | 2013-08-19 18:54:27 +0800 | [diff] [blame] | 812 | (strcmp(type, "FLAT") && strcmp(type, "SPARSE") && |
Paolo Bonzini | 04d542c | 2013-08-19 18:54:28 +0800 | [diff] [blame] | 813 | strcmp(type, "VMFS") && strcmp(type, "VMFSSPARSE")) || |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 814 | (strcmp(access, "RW"))) { |
| 815 | goto next_line; |
| 816 | } |
| 817 | |
Max Reitz | 5c98415 | 2014-12-03 14:57:22 +0100 | [diff] [blame] | 818 | if (!path_is_absolute(fname) && !path_has_protocol(fname) && |
| 819 | !desc_file_path[0]) |
| 820 | { |
| 821 | error_setg(errp, "Cannot use relative extent paths with VMDK " |
| 822 | "descriptor file '%s'", bs->file->filename); |
| 823 | return -EINVAL; |
| 824 | } |
| 825 | |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 826 | extent_path = g_malloc0(PATH_MAX); |
Jeff Cody | a7be17b | 2015-02-10 13:22:56 -0500 | [diff] [blame] | 827 | path_combine(extent_path, PATH_MAX, desc_file_path, fname); |
Max Reitz | 2e40134 | 2014-02-18 18:33:07 +0100 | [diff] [blame] | 828 | extent_file = NULL; |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 829 | |
| 830 | ret = snprintf(extent_opt_prefix, 32, "extents.%d", s->num_extents); |
| 831 | assert(ret < 32); |
| 832 | |
Kevin Wolf | f3930ed | 2015-04-08 13:43:47 +0200 | [diff] [blame] | 833 | ret = bdrv_open_image(&extent_file, extent_path, options, |
| 834 | extent_opt_prefix, bs, &child_file, false, errp); |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 835 | g_free(extent_path); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 836 | if (ret) { |
| 837 | return ret; |
| 838 | } |
| 839 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 840 | /* save to extents array */ |
Paolo Bonzini | 04d542c | 2013-08-19 18:54:28 +0800 | [diff] [blame] | 841 | if (!strcmp(type, "FLAT") || !strcmp(type, "VMFS")) { |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 842 | /* FLAT extent */ |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 843 | |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 844 | ret = vmdk_add_extent(bs, extent_file, true, sectors, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 845 | 0, 0, 0, 0, 0, &extent, errp); |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 846 | if (ret < 0) { |
Stefan Hajnoczi | ff74f33 | 2014-09-04 21:04:42 +0100 | [diff] [blame] | 847 | bdrv_unref(extent_file); |
Fam Zheng | 8aa1331 | 2013-08-06 15:44:51 +0800 | [diff] [blame] | 848 | return ret; |
| 849 | } |
Fam Zheng | f16f509 | 2011-08-12 23:19:33 +0800 | [diff] [blame] | 850 | extent->flat_start_offset = flat_offset << 9; |
Fam Zheng | daac8fd | 2013-08-19 18:54:27 +0800 | [diff] [blame] | 851 | } else if (!strcmp(type, "SPARSE") || !strcmp(type, "VMFSSPARSE")) { |
| 852 | /* SPARSE extent and VMFSSPARSE extent are both "COWD" sparse file*/ |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 853 | char *buf = vmdk_read_desc(extent_file, 0, errp); |
| 854 | if (!buf) { |
| 855 | ret = -EINVAL; |
| 856 | } else { |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 857 | ret = vmdk_open_sparse(bs, extent_file, bs->open_flags, buf, |
| 858 | options, errp); |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 859 | } |
Stefan Hajnoczi | b6b1d31 | 2014-09-04 21:04:43 +0100 | [diff] [blame] | 860 | g_free(buf); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 861 | if (ret) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 862 | bdrv_unref(extent_file); |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 863 | return ret; |
| 864 | } |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 865 | extent = &s->extents[s->num_extents - 1]; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 866 | } else { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 867 | error_setg(errp, "Unsupported extent type '%s'", type); |
Stefan Hajnoczi | ff74f33 | 2014-09-04 21:04:42 +0100 | [diff] [blame] | 868 | bdrv_unref(extent_file); |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 869 | return -ENOTSUP; |
| 870 | } |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 871 | extent->type = g_strdup(type); |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 872 | next_line: |
| 873 | /* move to next line */ |
Fam Zheng | 899f1ae | 2013-10-11 19:48:29 +0800 | [diff] [blame] | 874 | while (*p) { |
| 875 | if (*p == '\n') { |
| 876 | p++; |
| 877 | break; |
| 878 | } |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 879 | p++; |
| 880 | } |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 881 | } |
| 882 | return 0; |
| 883 | } |
| 884 | |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 885 | static int vmdk_open_desc_file(BlockDriverState *bs, int flags, char *buf, |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 886 | QDict *options, Error **errp) |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 887 | { |
| 888 | int ret; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 889 | char ct[128]; |
| 890 | BDRVVmdkState *s = bs->opaque; |
| 891 | |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 892 | if (vmdk_parse_description(buf, "createType", ct, sizeof(ct))) { |
Paolo Bonzini | 76abe40 | 2014-02-17 14:44:06 +0100 | [diff] [blame] | 893 | error_setg(errp, "invalid VMDK image descriptor"); |
| 894 | ret = -EINVAL; |
Evgeny Budilovsky | 0bed087 | 2013-06-12 14:06:30 +0300 | [diff] [blame] | 895 | goto exit; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 896 | } |
Fam Zheng | 6398de5 | 2011-08-12 23:19:27 +0800 | [diff] [blame] | 897 | if (strcmp(ct, "monolithicFlat") && |
Paolo Bonzini | 04d542c | 2013-08-19 18:54:28 +0800 | [diff] [blame] | 898 | strcmp(ct, "vmfs") && |
Fam Zheng | daac8fd | 2013-08-19 18:54:27 +0800 | [diff] [blame] | 899 | strcmp(ct, "vmfsSparse") && |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 900 | strcmp(ct, "twoGbMaxExtentSparse") && |
Fam Zheng | 6398de5 | 2011-08-12 23:19:27 +0800 | [diff] [blame] | 901 | strcmp(ct, "twoGbMaxExtentFlat")) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 902 | error_setg(errp, "Unsupported image type '%s'", ct); |
Evgeny Budilovsky | 0bed087 | 2013-06-12 14:06:30 +0300 | [diff] [blame] | 903 | ret = -ENOTSUP; |
| 904 | goto exit; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 905 | } |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 906 | s->create_type = g_strdup(ct); |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 907 | s->desc_offset = 0; |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 908 | ret = vmdk_parse_extents(buf, bs, bs->file->exact_filename, options, errp); |
Evgeny Budilovsky | 0bed087 | 2013-06-12 14:06:30 +0300 | [diff] [blame] | 909 | exit: |
Evgeny Budilovsky | 0bed087 | 2013-06-12 14:06:30 +0300 | [diff] [blame] | 910 | return ret; |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 911 | } |
| 912 | |
Max Reitz | 015a103 | 2013-09-05 14:22:29 +0200 | [diff] [blame] | 913 | static int vmdk_open(BlockDriverState *bs, QDict *options, int flags, |
| 914 | Error **errp) |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 915 | { |
Fam Zheng | 9aeecbb | 2014-12-04 07:28:33 +0800 | [diff] [blame] | 916 | char *buf; |
Fam Zheng | 86c6b42 | 2011-08-12 23:19:28 +0800 | [diff] [blame] | 917 | int ret; |
| 918 | BDRVVmdkState *s = bs->opaque; |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 919 | uint32_t magic; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 920 | |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 921 | buf = vmdk_read_desc(bs->file, 0, errp); |
| 922 | if (!buf) { |
| 923 | return -EINVAL; |
| 924 | } |
| 925 | |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 926 | magic = ldl_be_p(buf); |
| 927 | switch (magic) { |
| 928 | case VMDK3_MAGIC: |
| 929 | case VMDK4_MAGIC: |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 930 | ret = vmdk_open_sparse(bs, bs->file, flags, buf, options, errp); |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 931 | s->desc_offset = 0x200; |
| 932 | break; |
| 933 | default: |
Kevin Wolf | a646836 | 2015-04-07 15:35:59 +0200 | [diff] [blame] | 934 | ret = vmdk_open_desc_file(bs, flags, buf, options, errp); |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 935 | break; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 936 | } |
Paolo Bonzini | 37f09e5 | 2014-02-17 14:44:04 +0100 | [diff] [blame] | 937 | if (ret) { |
| 938 | goto fail; |
| 939 | } |
| 940 | |
Paolo Bonzini | bae0a0c | 2011-10-20 13:16:20 +0200 | [diff] [blame] | 941 | /* try to open parent images, if exist */ |
| 942 | ret = vmdk_parent_open(bs); |
| 943 | if (ret) { |
| 944 | goto fail; |
| 945 | } |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 946 | s->cid = vmdk_read_cid(bs, 0); |
Paolo Bonzini | bae0a0c | 2011-10-20 13:16:20 +0200 | [diff] [blame] | 947 | s->parent_cid = vmdk_read_cid(bs, 1); |
Paolo Bonzini | 848c66e | 2011-10-20 13:16:21 +0200 | [diff] [blame] | 948 | qemu_co_mutex_init(&s->lock); |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 949 | |
| 950 | /* Disable migration when VMDK images are used */ |
Alberto Garcia | 81e5f78 | 2015-04-08 12:29:19 +0300 | [diff] [blame] | 951 | error_setg(&s->migration_blocker, "The vmdk format used by node '%s' " |
| 952 | "does not support live migration", |
| 953 | bdrv_get_device_or_node_name(bs)); |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 954 | migrate_add_blocker(s->migration_blocker); |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 955 | g_free(buf); |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 956 | return 0; |
Paolo Bonzini | bae0a0c | 2011-10-20 13:16:20 +0200 | [diff] [blame] | 957 | |
| 958 | fail: |
Paolo Bonzini | d1833ef | 2014-02-17 14:44:03 +0100 | [diff] [blame] | 959 | g_free(buf); |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 960 | g_free(s->create_type); |
| 961 | s->create_type = NULL; |
Paolo Bonzini | bae0a0c | 2011-10-20 13:16:20 +0200 | [diff] [blame] | 962 | vmdk_free_extents(bs); |
| 963 | return ret; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 964 | } |
| 965 | |
Kevin Wolf | d34682c | 2013-12-11 19:26:16 +0100 | [diff] [blame] | 966 | |
Kevin Wolf | 3baca89 | 2014-07-16 17:48:16 +0200 | [diff] [blame] | 967 | static void vmdk_refresh_limits(BlockDriverState *bs, Error **errp) |
Kevin Wolf | d34682c | 2013-12-11 19:26:16 +0100 | [diff] [blame] | 968 | { |
| 969 | BDRVVmdkState *s = bs->opaque; |
| 970 | int i; |
| 971 | |
| 972 | for (i = 0; i < s->num_extents; i++) { |
| 973 | if (!s->extents[i].flat) { |
| 974 | bs->bl.write_zeroes_alignment = |
| 975 | MAX(bs->bl.write_zeroes_alignment, |
| 976 | s->extents[i].cluster_sectors); |
| 977 | } |
| 978 | } |
Kevin Wolf | d34682c | 2013-12-11 19:26:16 +0100 | [diff] [blame] | 979 | } |
| 980 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 981 | /** |
| 982 | * get_whole_cluster |
| 983 | * |
| 984 | * Copy backing file's cluster that covers @sector_num, otherwise write zero, |
| 985 | * to the cluster at @cluster_sector_num. |
| 986 | * |
| 987 | * If @skip_start_sector < @skip_end_sector, the relative range |
| 988 | * [@skip_start_sector, @skip_end_sector) is not copied or written, and leave |
| 989 | * it for call to write user data in the request. |
| 990 | */ |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 991 | static int get_whole_cluster(BlockDriverState *bs, |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 992 | VmdkExtent *extent, |
| 993 | uint64_t cluster_sector_num, |
| 994 | uint64_t sector_num, |
| 995 | uint64_t skip_start_sector, |
| 996 | uint64_t skip_end_sector) |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 997 | { |
Fam Zheng | bf81507 | 2013-08-06 15:44:54 +0800 | [diff] [blame] | 998 | int ret = VMDK_OK; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 999 | int64_t cluster_bytes; |
| 1000 | uint8_t *whole_grain; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1001 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1002 | /* For COW, align request sector_num to cluster start */ |
| 1003 | sector_num = QEMU_ALIGN_DOWN(sector_num, extent->cluster_sectors); |
| 1004 | cluster_bytes = extent->cluster_sectors << BDRV_SECTOR_BITS; |
| 1005 | whole_grain = qemu_blockalign(bs, cluster_bytes); |
| 1006 | |
| 1007 | if (!bs->backing_hd) { |
| 1008 | memset(whole_grain, 0, skip_start_sector << BDRV_SECTOR_BITS); |
| 1009 | memset(whole_grain + (skip_end_sector << BDRV_SECTOR_BITS), 0, |
| 1010 | cluster_bytes - (skip_end_sector << BDRV_SECTOR_BITS)); |
| 1011 | } |
| 1012 | |
| 1013 | assert(skip_end_sector <= extent->cluster_sectors); |
Fam Zheng | 0e69c54 | 2011-07-12 19:56:29 +0800 | [diff] [blame] | 1014 | /* we will be here if it's first write on non-exist grain(cluster). |
| 1015 | * try to read from parent image, if exist */ |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1016 | if (bs->backing_hd && !vmdk_is_cid_valid(bs)) { |
| 1017 | ret = VMDK_ERROR; |
| 1018 | goto exit; |
| 1019 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1020 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1021 | /* Read backing data before skip range */ |
| 1022 | if (skip_start_sector > 0) { |
| 1023 | if (bs->backing_hd) { |
| 1024 | ret = bdrv_read(bs->backing_hd, sector_num, |
| 1025 | whole_grain, skip_start_sector); |
| 1026 | if (ret < 0) { |
| 1027 | ret = VMDK_ERROR; |
| 1028 | goto exit; |
| 1029 | } |
Kevin Wolf | c336500 | 2010-04-16 19:28:14 +0200 | [diff] [blame] | 1030 | } |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1031 | ret = bdrv_write(extent->file, cluster_sector_num, whole_grain, |
| 1032 | skip_start_sector); |
Kevin Wolf | c336500 | 2010-04-16 19:28:14 +0200 | [diff] [blame] | 1033 | if (ret < 0) { |
Fam Zheng | bf81507 | 2013-08-06 15:44:54 +0800 | [diff] [blame] | 1034 | ret = VMDK_ERROR; |
| 1035 | goto exit; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1036 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1037 | } |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1038 | /* Read backing data after skip range */ |
| 1039 | if (skip_end_sector < extent->cluster_sectors) { |
| 1040 | if (bs->backing_hd) { |
| 1041 | ret = bdrv_read(bs->backing_hd, sector_num + skip_end_sector, |
| 1042 | whole_grain + (skip_end_sector << BDRV_SECTOR_BITS), |
| 1043 | extent->cluster_sectors - skip_end_sector); |
| 1044 | if (ret < 0) { |
| 1045 | ret = VMDK_ERROR; |
| 1046 | goto exit; |
| 1047 | } |
| 1048 | } |
| 1049 | ret = bdrv_write(extent->file, cluster_sector_num + skip_end_sector, |
| 1050 | whole_grain + (skip_end_sector << BDRV_SECTOR_BITS), |
| 1051 | extent->cluster_sectors - skip_end_sector); |
| 1052 | if (ret < 0) { |
| 1053 | ret = VMDK_ERROR; |
| 1054 | goto exit; |
| 1055 | } |
| 1056 | } |
| 1057 | |
Fam Zheng | bf81507 | 2013-08-06 15:44:54 +0800 | [diff] [blame] | 1058 | exit: |
| 1059 | qemu_vfree(whole_grain); |
| 1060 | return ret; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1061 | } |
| 1062 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1063 | static int vmdk_L2update(VmdkExtent *extent, VmdkMetaData *m_data, |
| 1064 | uint32_t offset) |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1065 | { |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1066 | offset = cpu_to_le32(offset); |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1067 | /* update L2 table */ |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1068 | if (bdrv_pwrite_sync( |
| 1069 | extent->file, |
| 1070 | ((int64_t)m_data->l2_offset * 512) |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1071 | + (m_data->l2_index * sizeof(offset)), |
Fam Zheng | e304e8e | 2013-05-02 10:25:26 +0800 | [diff] [blame] | 1072 | &offset, sizeof(offset)) < 0) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1073 | return VMDK_ERROR; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1074 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1075 | /* update backup L2 table */ |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1076 | if (extent->l1_backup_table_offset != 0) { |
| 1077 | m_data->l2_offset = extent->l1_backup_table[m_data->l1_index]; |
| 1078 | if (bdrv_pwrite_sync( |
| 1079 | extent->file, |
| 1080 | ((int64_t)m_data->l2_offset * 512) |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1081 | + (m_data->l2_index * sizeof(offset)), |
Fam Zheng | e304e8e | 2013-05-02 10:25:26 +0800 | [diff] [blame] | 1082 | &offset, sizeof(offset)) < 0) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1083 | return VMDK_ERROR; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1084 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1085 | } |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1086 | if (m_data->l2_cache_entry) { |
| 1087 | *m_data->l2_cache_entry = offset; |
| 1088 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1089 | |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1090 | return VMDK_OK; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1091 | } |
| 1092 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1093 | /** |
| 1094 | * get_cluster_offset |
| 1095 | * |
| 1096 | * Look up cluster offset in extent file by sector number, and store in |
| 1097 | * @cluster_offset. |
| 1098 | * |
| 1099 | * For flat extents, the start offset as parsed from the description file is |
| 1100 | * returned. |
| 1101 | * |
| 1102 | * For sparse extents, look up in L1, L2 table. If allocate is true, return an |
| 1103 | * offset for a new cluster and update L2 cache. If there is a backing file, |
| 1104 | * COW is done before returning; otherwise, zeroes are written to the allocated |
| 1105 | * cluster. Both COW and zero writing skips the sector range |
| 1106 | * [@skip_start_sector, @skip_end_sector) passed in by caller, because caller |
| 1107 | * has new data to write there. |
| 1108 | * |
| 1109 | * Returns: VMDK_OK if cluster exists and mapped in the image. |
| 1110 | * VMDK_UNALLOC if cluster is not mapped and @allocate is false. |
| 1111 | * VMDK_ERROR if failed. |
| 1112 | */ |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1113 | static int get_cluster_offset(BlockDriverState *bs, |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1114 | VmdkExtent *extent, |
| 1115 | VmdkMetaData *m_data, |
| 1116 | uint64_t offset, |
| 1117 | bool allocate, |
| 1118 | uint64_t *cluster_offset, |
| 1119 | uint64_t skip_start_sector, |
| 1120 | uint64_t skip_end_sector) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1121 | { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1122 | unsigned int l1_index, l2_offset, l2_index; |
| 1123 | int min_index, i, j; |
Fam Zheng | e304e8e | 2013-05-02 10:25:26 +0800 | [diff] [blame] | 1124 | uint32_t min_count, *l2_table; |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1125 | bool zeroed = false; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1126 | int64_t ret; |
Fam Zheng | d1319b0 | 2014-09-23 09:56:21 +0800 | [diff] [blame] | 1127 | int64_t cluster_sector; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1128 | |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1129 | if (m_data) { |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1130 | m_data->valid = 0; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1131 | } |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1132 | if (extent->flat) { |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1133 | *cluster_offset = extent->flat_start_offset; |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1134 | return VMDK_OK; |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1135 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1136 | |
Fam Zheng | 6398de5 | 2011-08-12 23:19:27 +0800 | [diff] [blame] | 1137 | offset -= (extent->end_sector - extent->sectors) * SECTOR_SIZE; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1138 | l1_index = (offset >> 9) / extent->l1_entry_sectors; |
| 1139 | if (l1_index >= extent->l1_size) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1140 | return VMDK_ERROR; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1141 | } |
| 1142 | l2_offset = extent->l1_table[l1_index]; |
| 1143 | if (!l2_offset) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1144 | return VMDK_UNALLOC; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1145 | } |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1146 | for (i = 0; i < L2_CACHE_SIZE; i++) { |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1147 | if (l2_offset == extent->l2_cache_offsets[i]) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1148 | /* increment the hit count */ |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1149 | if (++extent->l2_cache_counts[i] == 0xffffffff) { |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1150 | for (j = 0; j < L2_CACHE_SIZE; j++) { |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1151 | extent->l2_cache_counts[j] >>= 1; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1152 | } |
| 1153 | } |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1154 | l2_table = extent->l2_cache + (i * extent->l2_size); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1155 | goto found; |
| 1156 | } |
| 1157 | } |
| 1158 | /* not found: load a new entry in the least used one */ |
| 1159 | min_index = 0; |
| 1160 | min_count = 0xffffffff; |
Fam Zheng | b4b3ab1 | 2011-07-12 19:56:31 +0800 | [diff] [blame] | 1161 | for (i = 0; i < L2_CACHE_SIZE; i++) { |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1162 | if (extent->l2_cache_counts[i] < min_count) { |
| 1163 | min_count = extent->l2_cache_counts[i]; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1164 | min_index = i; |
| 1165 | } |
| 1166 | } |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1167 | l2_table = extent->l2_cache + (min_index * extent->l2_size); |
| 1168 | if (bdrv_pread( |
| 1169 | extent->file, |
| 1170 | (int64_t)l2_offset * 512, |
| 1171 | l2_table, |
| 1172 | extent->l2_size * sizeof(uint32_t) |
| 1173 | ) != extent->l2_size * sizeof(uint32_t)) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1174 | return VMDK_ERROR; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1175 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1176 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1177 | extent->l2_cache_offsets[min_index] = l2_offset; |
| 1178 | extent->l2_cache_counts[min_index] = 1; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1179 | found: |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1180 | l2_index = ((offset >> 9) / extent->cluster_sectors) % extent->l2_size; |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1181 | cluster_sector = le32_to_cpu(l2_table[l2_index]); |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1182 | |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1183 | if (m_data) { |
| 1184 | m_data->valid = 1; |
| 1185 | m_data->l1_index = l1_index; |
| 1186 | m_data->l2_index = l2_index; |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1187 | m_data->l2_offset = l2_offset; |
| 1188 | m_data->l2_cache_entry = &l2_table[l2_index]; |
| 1189 | } |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1190 | if (extent->has_zero_grain && cluster_sector == VMDK_GTE_ZEROED) { |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1191 | zeroed = true; |
| 1192 | } |
| 1193 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1194 | if (!cluster_sector || zeroed) { |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1195 | if (!allocate) { |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1196 | return zeroed ? VMDK_ZEROED : VMDK_UNALLOC; |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1197 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1198 | |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1199 | cluster_sector = extent->next_cluster_sector; |
| 1200 | extent->next_cluster_sector += extent->cluster_sectors; |
Kevin Wolf | 9949f97 | 2010-04-16 21:07:19 +0200 | [diff] [blame] | 1201 | |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1202 | /* First of all we write grain itself, to avoid race condition |
| 1203 | * that may to corrupt the image. |
| 1204 | * This problem may occur because of insufficient space on host disk |
| 1205 | * or inappropriate VM shutdown. |
| 1206 | */ |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1207 | ret = get_whole_cluster(bs, extent, |
| 1208 | cluster_sector, |
| 1209 | offset >> BDRV_SECTOR_BITS, |
| 1210 | skip_start_sector, skip_end_sector); |
| 1211 | if (ret) { |
| 1212 | return ret; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1213 | } |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 1214 | } |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1215 | *cluster_offset = cluster_sector << BDRV_SECTOR_BITS; |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1216 | return VMDK_OK; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1217 | } |
| 1218 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1219 | static VmdkExtent *find_extent(BDRVVmdkState *s, |
| 1220 | int64_t sector_num, VmdkExtent *start_hint) |
| 1221 | { |
| 1222 | VmdkExtent *extent = start_hint; |
| 1223 | |
| 1224 | if (!extent) { |
| 1225 | extent = &s->extents[0]; |
| 1226 | } |
| 1227 | while (extent < &s->extents[s->num_extents]) { |
| 1228 | if (sector_num < extent->end_sector) { |
| 1229 | return extent; |
| 1230 | } |
| 1231 | extent++; |
| 1232 | } |
| 1233 | return NULL; |
| 1234 | } |
| 1235 | |
Fam Zheng | 61f0ed1 | 2015-06-04 14:02:56 +0800 | [diff] [blame] | 1236 | static inline uint64_t vmdk_find_index_in_cluster(VmdkExtent *extent, |
| 1237 | int64_t sector_num) |
| 1238 | { |
| 1239 | uint64_t index_in_cluster, extent_begin_sector, extent_relative_sector_num; |
| 1240 | |
| 1241 | extent_begin_sector = extent->end_sector - extent->sectors; |
| 1242 | extent_relative_sector_num = sector_num - extent_begin_sector; |
| 1243 | index_in_cluster = extent_relative_sector_num % extent->cluster_sectors; |
| 1244 | return index_in_cluster; |
| 1245 | } |
| 1246 | |
Paolo Bonzini | b6b8a33 | 2013-09-04 19:00:28 +0200 | [diff] [blame] | 1247 | static int64_t coroutine_fn vmdk_co_get_block_status(BlockDriverState *bs, |
Stefan Hajnoczi | f8a2e5e | 2011-11-14 12:44:21 +0000 | [diff] [blame] | 1248 | int64_t sector_num, int nb_sectors, int *pnum) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1249 | { |
| 1250 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1251 | int64_t index_in_cluster, n, ret; |
| 1252 | uint64_t offset; |
| 1253 | VmdkExtent *extent; |
| 1254 | |
| 1255 | extent = find_extent(s, sector_num, NULL); |
| 1256 | if (!extent) { |
| 1257 | return 0; |
| 1258 | } |
Stefan Hajnoczi | f8a2e5e | 2011-11-14 12:44:21 +0000 | [diff] [blame] | 1259 | qemu_co_mutex_lock(&s->lock); |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1260 | ret = get_cluster_offset(bs, extent, NULL, |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1261 | sector_num * 512, false, &offset, |
| 1262 | 0, 0); |
Stefan Hajnoczi | f8a2e5e | 2011-11-14 12:44:21 +0000 | [diff] [blame] | 1263 | qemu_co_mutex_unlock(&s->lock); |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1264 | |
Paolo Bonzini | 4bc74be | 2013-09-04 19:00:30 +0200 | [diff] [blame] | 1265 | switch (ret) { |
| 1266 | case VMDK_ERROR: |
| 1267 | ret = -EIO; |
| 1268 | break; |
| 1269 | case VMDK_UNALLOC: |
| 1270 | ret = 0; |
| 1271 | break; |
| 1272 | case VMDK_ZEROED: |
| 1273 | ret = BDRV_BLOCK_ZERO; |
| 1274 | break; |
| 1275 | case VMDK_OK: |
| 1276 | ret = BDRV_BLOCK_DATA; |
Peter Lieven | 3eba13e | 2014-02-26 10:47:57 +0100 | [diff] [blame] | 1277 | if (extent->file == bs->file && !extent->compressed) { |
Paolo Bonzini | 4bc74be | 2013-09-04 19:00:30 +0200 | [diff] [blame] | 1278 | ret |= BDRV_BLOCK_OFFSET_VALID | offset; |
| 1279 | } |
| 1280 | |
| 1281 | break; |
| 1282 | } |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1283 | |
Fam Zheng | 61f0ed1 | 2015-06-04 14:02:56 +0800 | [diff] [blame] | 1284 | index_in_cluster = vmdk_find_index_in_cluster(extent, sector_num); |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1285 | n = extent->cluster_sectors - index_in_cluster; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1286 | if (n > nb_sectors) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1287 | n = nb_sectors; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1288 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1289 | *pnum = n; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1290 | return ret; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1291 | } |
| 1292 | |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1293 | static int vmdk_write_extent(VmdkExtent *extent, int64_t cluster_offset, |
| 1294 | int64_t offset_in_cluster, const uint8_t *buf, |
| 1295 | int nb_sectors, int64_t sector_num) |
| 1296 | { |
| 1297 | int ret; |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1298 | VmdkGrainMarker *data = NULL; |
| 1299 | uLongf buf_len; |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1300 | const uint8_t *write_buf = buf; |
| 1301 | int write_len = nb_sectors * 512; |
Fam Zheng | 5e82a31 | 2015-05-06 20:23:46 +0800 | [diff] [blame] | 1302 | int64_t write_offset; |
| 1303 | int64_t write_end_sector; |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1304 | |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1305 | if (extent->compressed) { |
| 1306 | if (!extent->has_marker) { |
| 1307 | ret = -EINVAL; |
| 1308 | goto out; |
| 1309 | } |
| 1310 | buf_len = (extent->cluster_sectors << 9) * 2; |
| 1311 | data = g_malloc(buf_len + sizeof(VmdkGrainMarker)); |
| 1312 | if (compress(data->data, &buf_len, buf, nb_sectors << 9) != Z_OK || |
| 1313 | buf_len == 0) { |
| 1314 | ret = -EINVAL; |
| 1315 | goto out; |
| 1316 | } |
| 1317 | data->lba = sector_num; |
| 1318 | data->size = buf_len; |
| 1319 | write_buf = (uint8_t *)data; |
| 1320 | write_len = buf_len + sizeof(VmdkGrainMarker); |
| 1321 | } |
Fam Zheng | 5e82a31 | 2015-05-06 20:23:46 +0800 | [diff] [blame] | 1322 | write_offset = cluster_offset + offset_in_cluster, |
| 1323 | ret = bdrv_pwrite(extent->file, write_offset, write_buf, write_len); |
| 1324 | |
| 1325 | write_end_sector = DIV_ROUND_UP(write_offset + write_len, BDRV_SECTOR_SIZE); |
| 1326 | |
| 1327 | extent->next_cluster_sector = MAX(extent->next_cluster_sector, |
| 1328 | write_end_sector); |
| 1329 | |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1330 | if (ret != write_len) { |
| 1331 | ret = ret < 0 ? ret : -EIO; |
| 1332 | goto out; |
| 1333 | } |
| 1334 | ret = 0; |
| 1335 | out: |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1336 | g_free(data); |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1337 | return ret; |
| 1338 | } |
| 1339 | |
| 1340 | static int vmdk_read_extent(VmdkExtent *extent, int64_t cluster_offset, |
| 1341 | int64_t offset_in_cluster, uint8_t *buf, |
| 1342 | int nb_sectors) |
| 1343 | { |
| 1344 | int ret; |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1345 | int cluster_bytes, buf_bytes; |
| 1346 | uint8_t *cluster_buf, *compressed_data; |
| 1347 | uint8_t *uncomp_buf; |
| 1348 | uint32_t data_len; |
| 1349 | VmdkGrainMarker *marker; |
| 1350 | uLongf buf_len; |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1351 | |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1352 | |
| 1353 | if (!extent->compressed) { |
| 1354 | ret = bdrv_pread(extent->file, |
| 1355 | cluster_offset + offset_in_cluster, |
| 1356 | buf, nb_sectors * 512); |
| 1357 | if (ret == nb_sectors * 512) { |
| 1358 | return 0; |
| 1359 | } else { |
| 1360 | return -EIO; |
| 1361 | } |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1362 | } |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1363 | cluster_bytes = extent->cluster_sectors * 512; |
| 1364 | /* Read two clusters in case GrainMarker + compressed data > one cluster */ |
| 1365 | buf_bytes = cluster_bytes * 2; |
| 1366 | cluster_buf = g_malloc(buf_bytes); |
| 1367 | uncomp_buf = g_malloc(cluster_bytes); |
| 1368 | ret = bdrv_pread(extent->file, |
| 1369 | cluster_offset, |
| 1370 | cluster_buf, buf_bytes); |
| 1371 | if (ret < 0) { |
| 1372 | goto out; |
| 1373 | } |
| 1374 | compressed_data = cluster_buf; |
| 1375 | buf_len = cluster_bytes; |
| 1376 | data_len = cluster_bytes; |
| 1377 | if (extent->has_marker) { |
| 1378 | marker = (VmdkGrainMarker *)cluster_buf; |
| 1379 | compressed_data = marker->data; |
| 1380 | data_len = le32_to_cpu(marker->size); |
| 1381 | } |
| 1382 | if (!data_len || data_len > buf_bytes) { |
| 1383 | ret = -EINVAL; |
| 1384 | goto out; |
| 1385 | } |
| 1386 | ret = uncompress(uncomp_buf, &buf_len, compressed_data, data_len); |
| 1387 | if (ret != Z_OK) { |
| 1388 | ret = -EINVAL; |
| 1389 | goto out; |
| 1390 | |
| 1391 | } |
| 1392 | if (offset_in_cluster < 0 || |
| 1393 | offset_in_cluster + nb_sectors * 512 > buf_len) { |
| 1394 | ret = -EINVAL; |
| 1395 | goto out; |
| 1396 | } |
| 1397 | memcpy(buf, uncomp_buf + offset_in_cluster, nb_sectors * 512); |
| 1398 | ret = 0; |
| 1399 | |
| 1400 | out: |
| 1401 | g_free(uncomp_buf); |
| 1402 | g_free(cluster_buf); |
| 1403 | return ret; |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1404 | } |
| 1405 | |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 1406 | static int vmdk_read(BlockDriverState *bs, int64_t sector_num, |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1407 | uint8_t *buf, int nb_sectors) |
| 1408 | { |
| 1409 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1410 | int ret; |
| 1411 | uint64_t n, index_in_cluster; |
| 1412 | VmdkExtent *extent = NULL; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1413 | uint64_t cluster_offset; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1414 | |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1415 | while (nb_sectors > 0) { |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1416 | extent = find_extent(s, sector_num, extent); |
| 1417 | if (!extent) { |
| 1418 | return -EIO; |
| 1419 | } |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1420 | ret = get_cluster_offset(bs, extent, NULL, |
| 1421 | sector_num << 9, false, &cluster_offset, |
| 1422 | 0, 0); |
Fam Zheng | 90df601 | 2015-06-04 14:02:57 +0800 | [diff] [blame] | 1423 | index_in_cluster = vmdk_find_index_in_cluster(extent, sector_num); |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1424 | n = extent->cluster_sectors - index_in_cluster; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1425 | if (n > nb_sectors) { |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1426 | n = nb_sectors; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1427 | } |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1428 | if (ret != VMDK_OK) { |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1429 | /* if not allocated, try to read from parent image, if exist */ |
Fam Zheng | 14ead64 | 2013-05-02 10:25:23 +0800 | [diff] [blame] | 1430 | if (bs->backing_hd && ret != VMDK_ZEROED) { |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1431 | if (!vmdk_is_cid_valid(bs)) { |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1432 | return -EINVAL; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1433 | } |
Kevin Wolf | b171271 | 2009-07-17 08:20:41 +0200 | [diff] [blame] | 1434 | ret = bdrv_read(bs->backing_hd, sector_num, buf, n); |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1435 | if (ret < 0) { |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1436 | return ret; |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1437 | } |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1438 | } else { |
| 1439 | memset(buf, 0, 512 * n); |
| 1440 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1441 | } else { |
Fam Zheng | dd3f6ee | 2011-08-12 23:19:29 +0800 | [diff] [blame] | 1442 | ret = vmdk_read_extent(extent, |
| 1443 | cluster_offset, index_in_cluster * 512, |
| 1444 | buf, n); |
| 1445 | if (ret) { |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1446 | return ret; |
| 1447 | } |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1448 | } |
| 1449 | nb_sectors -= n; |
| 1450 | sector_num += n; |
| 1451 | buf += n * 512; |
| 1452 | } |
| 1453 | return 0; |
| 1454 | } |
| 1455 | |
Paolo Bonzini | 2914caa | 2011-10-20 13:16:22 +0200 | [diff] [blame] | 1456 | static coroutine_fn int vmdk_co_read(BlockDriverState *bs, int64_t sector_num, |
| 1457 | uint8_t *buf, int nb_sectors) |
| 1458 | { |
| 1459 | int ret; |
| 1460 | BDRVVmdkState *s = bs->opaque; |
| 1461 | qemu_co_mutex_lock(&s->lock); |
| 1462 | ret = vmdk_read(bs, sector_num, buf, nb_sectors); |
| 1463 | qemu_co_mutex_unlock(&s->lock); |
| 1464 | return ret; |
| 1465 | } |
| 1466 | |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1467 | /** |
| 1468 | * vmdk_write: |
| 1469 | * @zeroed: buf is ignored (data is zero), use zeroed_grain GTE feature |
Fam Zheng | 8e50724 | 2013-08-01 18:12:17 +0800 | [diff] [blame] | 1470 | * if possible, otherwise return -ENOTSUP. |
| 1471 | * @zero_dry_run: used for zeroed == true only, don't update L2 table, just try |
| 1472 | * with each cluster. By dry run we can find if the zero write |
| 1473 | * is possible without modifying image data. |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1474 | * |
| 1475 | * Returns: error code with 0 for success. |
| 1476 | */ |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 1477 | static int vmdk_write(BlockDriverState *bs, int64_t sector_num, |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1478 | const uint8_t *buf, int nb_sectors, |
| 1479 | bool zeroed, bool zero_dry_run) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1480 | { |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 1481 | BDRVVmdkState *s = bs->opaque; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1482 | VmdkExtent *extent = NULL; |
Fam Zheng | 585ea0c | 2014-01-08 09:42:07 +0800 | [diff] [blame] | 1483 | int ret; |
| 1484 | int64_t index_in_cluster, n; |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 1485 | uint64_t cluster_offset; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1486 | VmdkMetaData m_data; |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 1487 | |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1488 | if (sector_num > bs->total_sectors) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1489 | error_report("Wrong offset: sector_num=0x%" PRIx64 |
j_mayer | 9286841 | 2007-09-21 06:09:39 +0000 | [diff] [blame] | 1490 | " total_sectors=0x%" PRIx64 "\n", |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1491 | sector_num, bs->total_sectors); |
Fam Zheng | 7fa60fa | 2011-07-19 08:38:22 +0800 | [diff] [blame] | 1492 | return -EIO; |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1493 | } |
| 1494 | |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 1495 | while (nb_sectors > 0) { |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1496 | extent = find_extent(s, sector_num, extent); |
| 1497 | if (!extent) { |
| 1498 | return -EIO; |
| 1499 | } |
Fam Zheng | 90df601 | 2015-06-04 14:02:57 +0800 | [diff] [blame] | 1500 | index_in_cluster = vmdk_find_index_in_cluster(extent, sector_num); |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1501 | n = extent->cluster_sectors - index_in_cluster; |
| 1502 | if (n > nb_sectors) { |
| 1503 | n = nb_sectors; |
| 1504 | } |
| 1505 | ret = get_cluster_offset(bs, extent, &m_data, sector_num << 9, |
| 1506 | !(extent->compressed || zeroed), |
| 1507 | &cluster_offset, |
| 1508 | index_in_cluster, index_in_cluster + n); |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1509 | if (extent->compressed) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1510 | if (ret == VMDK_OK) { |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1511 | /* Refuse write to allocated cluster for streamOptimized */ |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1512 | error_report("Could not write to allocated cluster" |
| 1513 | " for streamOptimized"); |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1514 | return -EIO; |
| 1515 | } else { |
| 1516 | /* allocate */ |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1517 | ret = get_cluster_offset(bs, extent, &m_data, sector_num << 9, |
| 1518 | true, &cluster_offset, 0, 0); |
Fam Zheng | 2b2c8c5 | 2011-08-12 23:19:31 +0800 | [diff] [blame] | 1519 | } |
| 1520 | } |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1521 | if (ret == VMDK_ERROR) { |
Fam Zheng | 91b85bd | 2011-07-12 19:56:35 +0800 | [diff] [blame] | 1522 | return -EINVAL; |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1523 | } |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1524 | if (zeroed) { |
| 1525 | /* Do zeroed write, buf is ignored */ |
| 1526 | if (extent->has_zero_grain && |
| 1527 | index_in_cluster == 0 && |
| 1528 | n >= extent->cluster_sectors) { |
| 1529 | n = extent->cluster_sectors; |
| 1530 | if (!zero_dry_run) { |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1531 | /* update L2 tables */ |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1532 | if (vmdk_L2update(extent, &m_data, VMDK_GTE_ZEROED) |
| 1533 | != VMDK_OK) { |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1534 | return -EIO; |
| 1535 | } |
| 1536 | } |
| 1537 | } else { |
| 1538 | return -ENOTSUP; |
| 1539 | } |
| 1540 | } else { |
| 1541 | ret = vmdk_write_extent(extent, |
| 1542 | cluster_offset, index_in_cluster * 512, |
| 1543 | buf, n, sector_num); |
| 1544 | if (ret) { |
| 1545 | return ret; |
| 1546 | } |
| 1547 | if (m_data.valid) { |
| 1548 | /* update L2 tables */ |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 1549 | if (vmdk_L2update(extent, &m_data, |
| 1550 | cluster_offset >> BDRV_SECTOR_BITS) |
| 1551 | != VMDK_OK) { |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1552 | return -EIO; |
| 1553 | } |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 1554 | } |
ths | 630530a | 2007-06-18 15:01:30 +0000 | [diff] [blame] | 1555 | } |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 1556 | nb_sectors -= n; |
| 1557 | sector_num += n; |
| 1558 | buf += n * 512; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1559 | |
Fam Zheng | ae261c8 | 2011-07-12 19:56:38 +0800 | [diff] [blame] | 1560 | /* update CID on the first write every time the virtual disk is |
| 1561 | * opened */ |
Fam Zheng | 69b4d86 | 2011-07-12 19:56:34 +0800 | [diff] [blame] | 1562 | if (!s->cid_updated) { |
Fam Zheng | e5dc64b | 2014-12-04 07:28:29 +0800 | [diff] [blame] | 1563 | ret = vmdk_write_cid(bs, g_random_int()); |
Kevin Wolf | 99f1835 | 2011-10-26 12:25:25 +0200 | [diff] [blame] | 1564 | if (ret < 0) { |
| 1565 | return ret; |
| 1566 | } |
Fam Zheng | 69b4d86 | 2011-07-12 19:56:34 +0800 | [diff] [blame] | 1567 | s->cid_updated = true; |
ths | 5f4da8c | 2007-01-24 21:05:24 +0000 | [diff] [blame] | 1568 | } |
bellard | ff1afc7 | 2005-04-26 21:08:00 +0000 | [diff] [blame] | 1569 | } |
| 1570 | return 0; |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 1571 | } |
| 1572 | |
Paolo Bonzini | e183ef7 | 2011-10-20 13:16:23 +0200 | [diff] [blame] | 1573 | static coroutine_fn int vmdk_co_write(BlockDriverState *bs, int64_t sector_num, |
| 1574 | const uint8_t *buf, int nb_sectors) |
| 1575 | { |
| 1576 | int ret; |
| 1577 | BDRVVmdkState *s = bs->opaque; |
| 1578 | qemu_co_mutex_lock(&s->lock); |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1579 | ret = vmdk_write(bs, sector_num, buf, nb_sectors, false, false); |
| 1580 | qemu_co_mutex_unlock(&s->lock); |
| 1581 | return ret; |
| 1582 | } |
| 1583 | |
Fam Zheng | ba0ad89 | 2014-05-06 21:08:44 +0800 | [diff] [blame] | 1584 | static int vmdk_write_compressed(BlockDriverState *bs, |
| 1585 | int64_t sector_num, |
| 1586 | const uint8_t *buf, |
| 1587 | int nb_sectors) |
| 1588 | { |
| 1589 | BDRVVmdkState *s = bs->opaque; |
| 1590 | if (s->num_extents == 1 && s->extents[0].compressed) { |
| 1591 | return vmdk_write(bs, sector_num, buf, nb_sectors, false, false); |
| 1592 | } else { |
| 1593 | return -ENOTSUP; |
| 1594 | } |
| 1595 | } |
| 1596 | |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1597 | static int coroutine_fn vmdk_co_write_zeroes(BlockDriverState *bs, |
| 1598 | int64_t sector_num, |
Peter Lieven | aa7bfbf | 2013-10-24 12:06:51 +0200 | [diff] [blame] | 1599 | int nb_sectors, |
| 1600 | BdrvRequestFlags flags) |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1601 | { |
| 1602 | int ret; |
| 1603 | BDRVVmdkState *s = bs->opaque; |
| 1604 | qemu_co_mutex_lock(&s->lock); |
Fam Zheng | 8e50724 | 2013-08-01 18:12:17 +0800 | [diff] [blame] | 1605 | /* write zeroes could fail if sectors not aligned to cluster, test it with |
| 1606 | * dry_run == true before really updating image */ |
Fam Zheng | cdeaf1f | 2013-05-02 10:25:27 +0800 | [diff] [blame] | 1607 | ret = vmdk_write(bs, sector_num, NULL, nb_sectors, true, true); |
| 1608 | if (!ret) { |
| 1609 | ret = vmdk_write(bs, sector_num, NULL, nb_sectors, true, false); |
| 1610 | } |
Paolo Bonzini | e183ef7 | 2011-10-20 13:16:23 +0200 | [diff] [blame] | 1611 | qemu_co_mutex_unlock(&s->lock); |
| 1612 | return ret; |
| 1613 | } |
| 1614 | |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 1615 | static int vmdk_create_extent(const char *filename, int64_t filesize, |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1616 | bool flat, bool compress, bool zeroed_grain, |
Chunyan Liu | 4ab1559 | 2014-06-30 14:29:58 +0800 | [diff] [blame] | 1617 | QemuOpts *opts, Error **errp) |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1618 | { |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1619 | int ret, i; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1620 | BlockDriverState *bs = NULL; |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1621 | VMDK4Header header; |
Fam Zheng | c13959c | 2014-05-28 11:38:58 +0800 | [diff] [blame] | 1622 | Error *local_err = NULL; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1623 | uint32_t tmp, magic, grains, gd_sectors, gt_size, gt_count; |
| 1624 | uint32_t *gd_buf = NULL; |
| 1625 | int gd_buf_size; |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 1626 | |
Chunyan Liu | 4ab1559 | 2014-06-30 14:29:58 +0800 | [diff] [blame] | 1627 | ret = bdrv_create_file(filename, opts, &local_err); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1628 | if (ret < 0) { |
| 1629 | error_propagate(errp, local_err); |
| 1630 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1631 | } |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1632 | |
Max Reitz | 2e40134 | 2014-02-18 18:33:07 +0100 | [diff] [blame] | 1633 | assert(bs == NULL); |
| 1634 | ret = bdrv_open(&bs, filename, NULL, NULL, BDRV_O_RDWR | BDRV_O_PROTOCOL, |
Max Reitz | 6ebf9aa | 2015-08-26 19:47:49 +0200 | [diff] [blame] | 1635 | &local_err); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1636 | if (ret < 0) { |
| 1637 | error_propagate(errp, local_err); |
| 1638 | goto exit; |
| 1639 | } |
| 1640 | |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1641 | if (flat) { |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1642 | ret = bdrv_truncate(bs, filesize); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1643 | if (ret < 0) { |
Jeff Cody | 39a611a | 2014-02-12 14:46:24 -0500 | [diff] [blame] | 1644 | error_setg_errno(errp, -ret, "Could not truncate file"); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1645 | } |
| 1646 | goto exit; |
| 1647 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1648 | magic = cpu_to_be32(VMDK4_MAGIC); |
| 1649 | memset(&header, 0, sizeof(header)); |
Fam Zheng | 69e0b6d | 2013-05-02 10:25:24 +0800 | [diff] [blame] | 1650 | header.version = zeroed_grain ? 2 : 1; |
Fam Zheng | 95b0aa4 | 2013-05-02 10:25:25 +0800 | [diff] [blame] | 1651 | header.flags = VMDK4_FLAG_RGD | VMDK4_FLAG_NL_DETECT |
Fam Zheng | 69e0b6d | 2013-05-02 10:25:24 +0800 | [diff] [blame] | 1652 | | (compress ? VMDK4_FLAG_COMPRESS | VMDK4_FLAG_MARKER : 0) |
| 1653 | | (zeroed_grain ? VMDK4_FLAG_ZERO_GRAIN : 0); |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 1654 | header.compressAlgorithm = compress ? VMDK4_COMPRESSION_DEFLATE : 0; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1655 | header.capacity = filesize / BDRV_SECTOR_SIZE; |
Alexander Graf | 16372ff | 2011-05-25 00:46:55 +0200 | [diff] [blame] | 1656 | header.granularity = 128; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1657 | header.num_gtes_per_gt = BDRV_SECTOR_SIZE; |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1658 | |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1659 | grains = DIV_ROUND_UP(filesize / BDRV_SECTOR_SIZE, header.granularity); |
| 1660 | gt_size = DIV_ROUND_UP(header.num_gtes_per_gt * sizeof(uint32_t), |
| 1661 | BDRV_SECTOR_SIZE); |
| 1662 | gt_count = DIV_ROUND_UP(grains, header.num_gtes_per_gt); |
| 1663 | gd_sectors = DIV_ROUND_UP(gt_count * sizeof(uint32_t), BDRV_SECTOR_SIZE); |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1664 | |
| 1665 | header.desc_offset = 1; |
| 1666 | header.desc_size = 20; |
| 1667 | header.rgd_offset = header.desc_offset + header.desc_size; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1668 | header.gd_offset = header.rgd_offset + gd_sectors + (gt_size * gt_count); |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1669 | header.grain_offset = |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1670 | ROUND_UP(header.gd_offset + gd_sectors + (gt_size * gt_count), |
| 1671 | header.granularity); |
Alexander Graf | 16372ff | 2011-05-25 00:46:55 +0200 | [diff] [blame] | 1672 | /* swap endianness for all header fields */ |
| 1673 | header.version = cpu_to_le32(header.version); |
| 1674 | header.flags = cpu_to_le32(header.flags); |
| 1675 | header.capacity = cpu_to_le64(header.capacity); |
| 1676 | header.granularity = cpu_to_le64(header.granularity); |
Fam Zheng | ca8804c | 2013-08-06 15:44:55 +0800 | [diff] [blame] | 1677 | header.num_gtes_per_gt = cpu_to_le32(header.num_gtes_per_gt); |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1678 | header.desc_offset = cpu_to_le64(header.desc_offset); |
| 1679 | header.desc_size = cpu_to_le64(header.desc_size); |
| 1680 | header.rgd_offset = cpu_to_le64(header.rgd_offset); |
| 1681 | header.gd_offset = cpu_to_le64(header.gd_offset); |
| 1682 | header.grain_offset = cpu_to_le64(header.grain_offset); |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 1683 | header.compressAlgorithm = cpu_to_le16(header.compressAlgorithm); |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1684 | |
| 1685 | header.check_bytes[0] = 0xa; |
| 1686 | header.check_bytes[1] = 0x20; |
| 1687 | header.check_bytes[2] = 0xd; |
| 1688 | header.check_bytes[3] = 0xa; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 1689 | |
| 1690 | /* write all the data */ |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1691 | ret = bdrv_pwrite(bs, 0, &magic, sizeof(magic)); |
| 1692 | if (ret < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1693 | error_setg(errp, QERR_IO_ERROR); |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 1694 | goto exit; |
| 1695 | } |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1696 | ret = bdrv_pwrite(bs, sizeof(magic), &header, sizeof(header)); |
| 1697 | if (ret < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1698 | error_setg(errp, QERR_IO_ERROR); |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 1699 | goto exit; |
| 1700 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1701 | |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1702 | ret = bdrv_truncate(bs, le64_to_cpu(header.grain_offset) << 9); |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 1703 | if (ret < 0) { |
Jeff Cody | 39a611a | 2014-02-12 14:46:24 -0500 | [diff] [blame] | 1704 | error_setg_errno(errp, -ret, "Could not truncate file"); |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 1705 | goto exit; |
| 1706 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1707 | |
| 1708 | /* write grain directory */ |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1709 | gd_buf_size = gd_sectors * BDRV_SECTOR_SIZE; |
| 1710 | gd_buf = g_malloc0(gd_buf_size); |
| 1711 | 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] | 1712 | i < gt_count; i++, tmp += gt_size) { |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1713 | gd_buf[i] = cpu_to_le32(tmp); |
| 1714 | } |
| 1715 | ret = bdrv_pwrite(bs, le64_to_cpu(header.rgd_offset) * BDRV_SECTOR_SIZE, |
| 1716 | gd_buf, gd_buf_size); |
| 1717 | if (ret < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1718 | error_setg(errp, QERR_IO_ERROR); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1719 | goto exit; |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 1720 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 1721 | |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1722 | /* write backup grain directory */ |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1723 | 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] | 1724 | i < gt_count; i++, tmp += gt_size) { |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1725 | gd_buf[i] = cpu_to_le32(tmp); |
| 1726 | } |
| 1727 | ret = bdrv_pwrite(bs, le64_to_cpu(header.gd_offset) * BDRV_SECTOR_SIZE, |
| 1728 | gd_buf, gd_buf_size); |
| 1729 | if (ret < 0) { |
Markus Armbruster | c6bd8c7 | 2015-03-17 11:54:50 +0100 | [diff] [blame] | 1730 | error_setg(errp, QERR_IO_ERROR); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1731 | goto exit; |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 1732 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1733 | |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1734 | ret = 0; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1735 | exit: |
| 1736 | if (bs) { |
| 1737 | bdrv_unref(bs); |
| 1738 | } |
| 1739 | g_free(gd_buf); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1740 | return ret; |
| 1741 | } |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 1742 | |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1743 | static int filename_decompose(const char *filename, char *path, char *prefix, |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1744 | char *postfix, size_t buf_len, Error **errp) |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1745 | { |
| 1746 | const char *p, *q; |
| 1747 | |
| 1748 | if (filename == NULL || !strlen(filename)) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1749 | error_setg(errp, "No filename provided"); |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1750 | return VMDK_ERROR; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1751 | } |
| 1752 | p = strrchr(filename, '/'); |
| 1753 | if (p == NULL) { |
| 1754 | p = strrchr(filename, '\\'); |
| 1755 | } |
| 1756 | if (p == NULL) { |
| 1757 | p = strrchr(filename, ':'); |
| 1758 | } |
| 1759 | if (p != NULL) { |
| 1760 | p++; |
| 1761 | if (p - filename >= buf_len) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1762 | return VMDK_ERROR; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1763 | } |
| 1764 | pstrcpy(path, p - filename + 1, filename); |
| 1765 | } else { |
| 1766 | p = filename; |
| 1767 | path[0] = '\0'; |
| 1768 | } |
| 1769 | q = strrchr(p, '.'); |
| 1770 | if (q == NULL) { |
| 1771 | pstrcpy(prefix, buf_len, p); |
| 1772 | postfix[0] = '\0'; |
| 1773 | } else { |
| 1774 | if (q - p >= buf_len) { |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1775 | return VMDK_ERROR; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1776 | } |
| 1777 | pstrcpy(prefix, q - p + 1, p); |
| 1778 | pstrcpy(postfix, buf_len, q); |
| 1779 | } |
Fam Zheng | 65f7472 | 2013-05-02 10:25:22 +0800 | [diff] [blame] | 1780 | return VMDK_OK; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1781 | } |
| 1782 | |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 1783 | static int vmdk_create(const char *filename, QemuOpts *opts, Error **errp) |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1784 | { |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1785 | int idx = 0; |
| 1786 | BlockDriverState *new_bs = NULL; |
Fam Zheng | c13959c | 2014-05-28 11:38:58 +0800 | [diff] [blame] | 1787 | Error *local_err = NULL; |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1788 | char *desc = NULL; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1789 | int64_t total_size = 0, filesize; |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 1790 | char *adapter_type = NULL; |
| 1791 | char *backing_file = NULL; |
| 1792 | char *fmt = NULL; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1793 | int flags = 0; |
| 1794 | int ret = 0; |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 1795 | bool flat, split, compress; |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1796 | GString *ext_desc_lines; |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 1797 | char *path = g_malloc0(PATH_MAX); |
| 1798 | char *prefix = g_malloc0(PATH_MAX); |
| 1799 | char *postfix = g_malloc0(PATH_MAX); |
| 1800 | char *desc_line = g_malloc0(BUF_SIZE); |
| 1801 | char *ext_filename = g_malloc0(PATH_MAX); |
| 1802 | char *desc_filename = g_malloc0(PATH_MAX); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1803 | const int64_t split_size = 0x80000000; /* VMDK has constant split size */ |
| 1804 | const char *desc_extent_line; |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 1805 | char *parent_desc_line = g_malloc0(BUF_SIZE); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1806 | uint32_t parent_cid = 0xffffffff; |
Othmar Pasteka | 7f2039f | 2013-01-30 00:26:52 +0100 | [diff] [blame] | 1807 | uint32_t number_heads = 16; |
Fam Zheng | 69e0b6d | 2013-05-02 10:25:24 +0800 | [diff] [blame] | 1808 | bool zeroed_grain = false; |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1809 | uint32_t desc_offset = 0, desc_len; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1810 | const char desc_template[] = |
| 1811 | "# Disk DescriptorFile\n" |
| 1812 | "version=1\n" |
Fam Zheng | 9b17031 | 2014-04-17 18:43:53 +0800 | [diff] [blame] | 1813 | "CID=%" PRIx32 "\n" |
| 1814 | "parentCID=%" PRIx32 "\n" |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1815 | "createType=\"%s\"\n" |
| 1816 | "%s" |
| 1817 | "\n" |
| 1818 | "# Extent description\n" |
| 1819 | "%s" |
| 1820 | "\n" |
| 1821 | "# The Disk Data Base\n" |
| 1822 | "#DDB\n" |
| 1823 | "\n" |
| 1824 | "ddb.virtualHWVersion = \"%d\"\n" |
| 1825 | "ddb.geometry.cylinders = \"%" PRId64 "\"\n" |
Fam Zheng | 4ab9dab | 2014-04-17 11:34:37 +0800 | [diff] [blame] | 1826 | "ddb.geometry.heads = \"%" PRIu32 "\"\n" |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1827 | "ddb.geometry.sectors = \"63\"\n" |
Othmar Pasteka | 7f2039f | 2013-01-30 00:26:52 +0100 | [diff] [blame] | 1828 | "ddb.adapterType = \"%s\"\n"; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1829 | |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1830 | ext_desc_lines = g_string_new(NULL); |
| 1831 | |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1832 | if (filename_decompose(filename, path, prefix, postfix, PATH_MAX, errp)) { |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1833 | ret = -EINVAL; |
| 1834 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1835 | } |
| 1836 | /* Read out options */ |
Hu Tao | c2eb918 | 2014-09-10 17:05:45 +0800 | [diff] [blame] | 1837 | total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0), |
| 1838 | BDRV_SECTOR_SIZE); |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 1839 | adapter_type = qemu_opt_get_del(opts, BLOCK_OPT_ADAPTER_TYPE); |
| 1840 | backing_file = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FILE); |
| 1841 | if (qemu_opt_get_bool_del(opts, BLOCK_OPT_COMPAT6, false)) { |
| 1842 | flags |= BLOCK_FLAG_COMPAT6; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1843 | } |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 1844 | fmt = qemu_opt_get_del(opts, BLOCK_OPT_SUBFMT); |
| 1845 | if (qemu_opt_get_bool_del(opts, BLOCK_OPT_ZEROED_GRAIN, false)) { |
| 1846 | zeroed_grain = true; |
| 1847 | } |
| 1848 | |
Othmar Pasteka | 7f2039f | 2013-01-30 00:26:52 +0100 | [diff] [blame] | 1849 | if (!adapter_type) { |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 1850 | adapter_type = g_strdup("ide"); |
Othmar Pasteka | 7f2039f | 2013-01-30 00:26:52 +0100 | [diff] [blame] | 1851 | } else if (strcmp(adapter_type, "ide") && |
| 1852 | strcmp(adapter_type, "buslogic") && |
| 1853 | strcmp(adapter_type, "lsilogic") && |
| 1854 | strcmp(adapter_type, "legacyESX")) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1855 | error_setg(errp, "Unknown adapter type: '%s'", adapter_type); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1856 | ret = -EINVAL; |
| 1857 | goto exit; |
Othmar Pasteka | 7f2039f | 2013-01-30 00:26:52 +0100 | [diff] [blame] | 1858 | } |
| 1859 | if (strcmp(adapter_type, "ide") != 0) { |
| 1860 | /* that's the number of heads with which vmware operates when |
| 1861 | creating, exporting, etc. vmdk files with a non-ide adapter type */ |
| 1862 | number_heads = 255; |
| 1863 | } |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1864 | if (!fmt) { |
| 1865 | /* Default format to monolithicSparse */ |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 1866 | fmt = g_strdup("monolithicSparse"); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1867 | } else if (strcmp(fmt, "monolithicFlat") && |
| 1868 | strcmp(fmt, "monolithicSparse") && |
| 1869 | strcmp(fmt, "twoGbMaxExtentSparse") && |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 1870 | strcmp(fmt, "twoGbMaxExtentFlat") && |
| 1871 | strcmp(fmt, "streamOptimized")) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1872 | error_setg(errp, "Unknown subformat: '%s'", fmt); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1873 | ret = -EINVAL; |
| 1874 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1875 | } |
| 1876 | split = !(strcmp(fmt, "twoGbMaxExtentFlat") && |
| 1877 | strcmp(fmt, "twoGbMaxExtentSparse")); |
| 1878 | flat = !(strcmp(fmt, "monolithicFlat") && |
| 1879 | strcmp(fmt, "twoGbMaxExtentFlat")); |
Fam Zheng | 6c031aa | 2011-08-12 23:19:32 +0800 | [diff] [blame] | 1880 | compress = !strcmp(fmt, "streamOptimized"); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1881 | if (flat) { |
Fam Zheng | 4ab9dab | 2014-04-17 11:34:37 +0800 | [diff] [blame] | 1882 | desc_extent_line = "RW %" PRId64 " FLAT \"%s\" 0\n"; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1883 | } else { |
Fam Zheng | 4ab9dab | 2014-04-17 11:34:37 +0800 | [diff] [blame] | 1884 | desc_extent_line = "RW %" PRId64 " SPARSE \"%s\"\n"; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1885 | } |
| 1886 | if (flat && backing_file) { |
Fam Zheng | 4823970 | 2013-10-11 15:43:22 +0800 | [diff] [blame] | 1887 | error_setg(errp, "Flat image can't have backing file"); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1888 | ret = -ENOTSUP; |
| 1889 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1890 | } |
Fam Zheng | 52c8d62 | 2013-10-11 15:43:23 +0800 | [diff] [blame] | 1891 | if (flat && zeroed_grain) { |
| 1892 | error_setg(errp, "Flat image can't enable zeroed grain"); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1893 | ret = -ENOTSUP; |
| 1894 | goto exit; |
Fam Zheng | 52c8d62 | 2013-10-11 15:43:23 +0800 | [diff] [blame] | 1895 | } |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1896 | if (backing_file) { |
Max Reitz | f67503e | 2014-02-18 18:33:05 +0100 | [diff] [blame] | 1897 | BlockDriverState *bs = NULL; |
Max Reitz | 1085daf | 2014-11-26 17:20:28 +0100 | [diff] [blame] | 1898 | char *full_backing = g_new0(char, PATH_MAX); |
| 1899 | bdrv_get_full_backing_filename_from_filename(filename, backing_file, |
| 1900 | full_backing, PATH_MAX, |
| 1901 | &local_err); |
| 1902 | if (local_err) { |
| 1903 | g_free(full_backing); |
| 1904 | error_propagate(errp, local_err); |
| 1905 | ret = -ENOENT; |
| 1906 | goto exit; |
| 1907 | } |
Max Reitz | 6ebf9aa | 2015-08-26 19:47:49 +0200 | [diff] [blame] | 1908 | ret = bdrv_open(&bs, full_backing, NULL, NULL, BDRV_O_NO_BACKING, errp); |
Max Reitz | 1085daf | 2014-11-26 17:20:28 +0100 | [diff] [blame] | 1909 | g_free(full_backing); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1910 | if (ret != 0) { |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1911 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1912 | } |
| 1913 | if (strcmp(bs->drv->format_name, "vmdk")) { |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 1914 | bdrv_unref(bs); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1915 | ret = -EINVAL; |
| 1916 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1917 | } |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1918 | parent_cid = vmdk_read_cid(bs, 0); |
Fam Zheng | 4f6fd34 | 2013-08-23 09:14:47 +0800 | [diff] [blame] | 1919 | bdrv_unref(bs); |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 1920 | snprintf(parent_desc_line, BUF_SIZE, |
Fam Zheng | 8ed610a | 2013-06-26 17:24:32 +0800 | [diff] [blame] | 1921 | "parentFileNameHint=\"%s\"", backing_file); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1922 | } |
| 1923 | |
| 1924 | /* Create extents */ |
| 1925 | filesize = total_size; |
| 1926 | while (filesize > 0) { |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1927 | int64_t size = filesize; |
| 1928 | |
| 1929 | if (split && size > split_size) { |
| 1930 | size = split_size; |
| 1931 | } |
| 1932 | if (split) { |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 1933 | snprintf(desc_filename, PATH_MAX, "%s-%c%03d%s", |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1934 | prefix, flat ? 'f' : 's', ++idx, postfix); |
| 1935 | } else if (flat) { |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 1936 | snprintf(desc_filename, PATH_MAX, "%s-flat%s", prefix, postfix); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1937 | } else { |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 1938 | snprintf(desc_filename, PATH_MAX, "%s%s", prefix, postfix); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1939 | } |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 1940 | snprintf(ext_filename, PATH_MAX, "%s%s", path, desc_filename); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1941 | |
Fam Zheng | 69e0b6d | 2013-05-02 10:25:24 +0800 | [diff] [blame] | 1942 | if (vmdk_create_extent(ext_filename, size, |
Chunyan Liu | 4ab1559 | 2014-06-30 14:29:58 +0800 | [diff] [blame] | 1943 | flat, compress, zeroed_grain, opts, errp)) { |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1944 | ret = -EINVAL; |
| 1945 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1946 | } |
| 1947 | filesize -= size; |
| 1948 | |
| 1949 | /* Format description line */ |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 1950 | snprintf(desc_line, BUF_SIZE, |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1951 | desc_extent_line, size / BDRV_SECTOR_SIZE, desc_filename); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1952 | g_string_append(ext_desc_lines, desc_line); |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1953 | } |
| 1954 | /* generate descriptor file */ |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1955 | desc = g_strdup_printf(desc_template, |
Fam Zheng | e5dc64b | 2014-12-04 07:28:29 +0800 | [diff] [blame] | 1956 | g_random_int(), |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1957 | parent_cid, |
| 1958 | fmt, |
| 1959 | parent_desc_line, |
| 1960 | ext_desc_lines->str, |
| 1961 | (flags & BLOCK_FLAG_COMPAT6 ? 6 : 4), |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1962 | total_size / |
| 1963 | (int64_t)(63 * number_heads * BDRV_SECTOR_SIZE), |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1964 | number_heads, |
| 1965 | adapter_type); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1966 | desc_len = strlen(desc); |
| 1967 | /* the descriptor offset = 0x200 */ |
| 1968 | if (!split && !flat) { |
| 1969 | desc_offset = 0x200; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1970 | } else { |
Chunyan Liu | c282e1f | 2014-06-05 17:21:11 +0800 | [diff] [blame] | 1971 | ret = bdrv_create_file(filename, opts, &local_err); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1972 | if (ret < 0) { |
Fam Zheng | c13959c | 2014-05-28 11:38:58 +0800 | [diff] [blame] | 1973 | error_propagate(errp, local_err); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1974 | goto exit; |
| 1975 | } |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1976 | } |
Max Reitz | 2e40134 | 2014-02-18 18:33:07 +0100 | [diff] [blame] | 1977 | assert(new_bs == NULL); |
| 1978 | ret = bdrv_open(&new_bs, filename, NULL, NULL, |
Max Reitz | 6ebf9aa | 2015-08-26 19:47:49 +0200 | [diff] [blame] | 1979 | BDRV_O_RDWR | BDRV_O_PROTOCOL, &local_err); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1980 | if (ret < 0) { |
Fam Zheng | c13959c | 2014-05-28 11:38:58 +0800 | [diff] [blame] | 1981 | error_propagate(errp, local_err); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1982 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1983 | } |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1984 | ret = bdrv_pwrite(new_bs, desc_offset, desc, desc_len); |
| 1985 | if (ret < 0) { |
| 1986 | error_setg_errno(errp, -ret, "Could not write description"); |
| 1987 | goto exit; |
Fam Zheng | f66fd6c | 2011-07-19 08:45:23 +0800 | [diff] [blame] | 1988 | } |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1989 | /* bdrv_pwrite write padding zeros to align to sector, we don't need that |
| 1990 | * for description file */ |
| 1991 | if (desc_offset == 0) { |
| 1992 | ret = bdrv_truncate(new_bs, desc_len); |
| 1993 | if (ret < 0) { |
Jeff Cody | 39a611a | 2014-02-12 14:46:24 -0500 | [diff] [blame] | 1994 | error_setg_errno(errp, -ret, "Could not truncate file"); |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1995 | } |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 1996 | } |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 1997 | exit: |
Fam Zheng | 917703c | 2013-12-20 09:48:48 +0800 | [diff] [blame] | 1998 | if (new_bs) { |
| 1999 | bdrv_unref(new_bs); |
| 2000 | } |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 2001 | g_free(adapter_type); |
| 2002 | g_free(backing_file); |
| 2003 | g_free(fmt); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2004 | g_free(desc); |
Jeff Cody | fe20656 | 2015-01-22 08:03:26 -0500 | [diff] [blame] | 2005 | g_free(path); |
| 2006 | g_free(prefix); |
| 2007 | g_free(postfix); |
| 2008 | g_free(desc_line); |
| 2009 | g_free(ext_filename); |
| 2010 | g_free(desc_filename); |
| 2011 | g_free(parent_desc_line); |
Fam Zheng | af057fe | 2013-12-03 10:41:05 +0800 | [diff] [blame] | 2012 | g_string_free(ext_desc_lines, true); |
Kirill A. Shutemov | 1640366 | 2010-01-20 00:56:13 +0100 | [diff] [blame] | 2013 | return ret; |
bellard | 8979b22 | 2005-07-02 14:02:54 +0000 | [diff] [blame] | 2014 | } |
| 2015 | |
bellard | e2731ad | 2004-09-18 19:32:11 +0000 | [diff] [blame] | 2016 | static void vmdk_close(BlockDriverState *bs) |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 2017 | { |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 2018 | BDRVVmdkState *s = bs->opaque; |
| 2019 | |
Fam Zheng | b3976d3 | 2011-07-12 19:56:28 +0800 | [diff] [blame] | 2020 | vmdk_free_extents(bs); |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2021 | g_free(s->create_type); |
Kevin Wolf | 2bc3166 | 2011-11-22 16:50:27 +0100 | [diff] [blame] | 2022 | |
| 2023 | migrate_del_blocker(s->migration_blocker); |
| 2024 | error_free(s->migration_blocker); |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 2025 | } |
| 2026 | |
Paolo Bonzini | 8b94ff8 | 2011-10-20 13:16:24 +0200 | [diff] [blame] | 2027 | static coroutine_fn int vmdk_co_flush(BlockDriverState *bs) |
pbrook | 7a6cba6 | 2006-06-04 11:39:07 +0000 | [diff] [blame] | 2028 | { |
Fam Zheng | 333c574 | 2011-07-12 19:56:33 +0800 | [diff] [blame] | 2029 | BDRVVmdkState *s = bs->opaque; |
Paolo Bonzini | 29cdb25 | 2012-03-12 18:26:01 +0100 | [diff] [blame] | 2030 | int i, err; |
| 2031 | int ret = 0; |
Fam Zheng | 333c574 | 2011-07-12 19:56:33 +0800 | [diff] [blame] | 2032 | |
Fam Zheng | 333c574 | 2011-07-12 19:56:33 +0800 | [diff] [blame] | 2033 | for (i = 0; i < s->num_extents; i++) { |
Paolo Bonzini | 8b94ff8 | 2011-10-20 13:16:24 +0200 | [diff] [blame] | 2034 | err = bdrv_co_flush(s->extents[i].file); |
Fam Zheng | 333c574 | 2011-07-12 19:56:33 +0800 | [diff] [blame] | 2035 | if (err < 0) { |
| 2036 | ret = err; |
| 2037 | } |
| 2038 | } |
| 2039 | return ret; |
pbrook | 7a6cba6 | 2006-06-04 11:39:07 +0000 | [diff] [blame] | 2040 | } |
| 2041 | |
Fam Zheng | 4a1d5e1 | 2011-07-12 19:56:39 +0800 | [diff] [blame] | 2042 | static int64_t vmdk_get_allocated_file_size(BlockDriverState *bs) |
| 2043 | { |
| 2044 | int i; |
| 2045 | int64_t ret = 0; |
| 2046 | int64_t r; |
| 2047 | BDRVVmdkState *s = bs->opaque; |
| 2048 | |
| 2049 | ret = bdrv_get_allocated_file_size(bs->file); |
| 2050 | if (ret < 0) { |
| 2051 | return ret; |
| 2052 | } |
| 2053 | for (i = 0; i < s->num_extents; i++) { |
| 2054 | if (s->extents[i].file == bs->file) { |
| 2055 | continue; |
| 2056 | } |
| 2057 | r = bdrv_get_allocated_file_size(s->extents[i].file); |
| 2058 | if (r < 0) { |
| 2059 | return r; |
| 2060 | } |
| 2061 | ret += r; |
| 2062 | } |
| 2063 | return ret; |
| 2064 | } |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 2065 | |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2066 | static int vmdk_has_zero_init(BlockDriverState *bs) |
| 2067 | { |
| 2068 | int i; |
| 2069 | BDRVVmdkState *s = bs->opaque; |
| 2070 | |
| 2071 | /* If has a flat extent and its underlying storage doesn't have zero init, |
| 2072 | * return 0. */ |
| 2073 | for (i = 0; i < s->num_extents; i++) { |
| 2074 | if (s->extents[i].flat) { |
| 2075 | if (!bdrv_has_zero_init(s->extents[i].file)) { |
| 2076 | return 0; |
| 2077 | } |
| 2078 | } |
| 2079 | } |
| 2080 | return 1; |
| 2081 | } |
| 2082 | |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2083 | static ImageInfo *vmdk_get_extent_info(VmdkExtent *extent) |
| 2084 | { |
| 2085 | ImageInfo *info = g_new0(ImageInfo, 1); |
| 2086 | |
| 2087 | *info = (ImageInfo){ |
| 2088 | .filename = g_strdup(extent->file->filename), |
| 2089 | .format = g_strdup(extent->type), |
| 2090 | .virtual_size = extent->sectors * BDRV_SECTOR_SIZE, |
| 2091 | .compressed = extent->compressed, |
| 2092 | .has_compressed = extent->compressed, |
| 2093 | .cluster_size = extent->cluster_sectors * BDRV_SECTOR_SIZE, |
| 2094 | .has_cluster_size = !extent->flat, |
| 2095 | }; |
| 2096 | |
| 2097 | return info; |
| 2098 | } |
| 2099 | |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 2100 | static int vmdk_check(BlockDriverState *bs, BdrvCheckResult *result, |
| 2101 | BdrvCheckMode fix) |
| 2102 | { |
| 2103 | BDRVVmdkState *s = bs->opaque; |
| 2104 | VmdkExtent *extent = NULL; |
| 2105 | int64_t sector_num = 0; |
Markus Armbruster | 57322b7 | 2014-06-26 13:23:22 +0200 | [diff] [blame] | 2106 | int64_t total_sectors = bdrv_nb_sectors(bs); |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 2107 | int ret; |
| 2108 | uint64_t cluster_offset; |
| 2109 | |
| 2110 | if (fix) { |
| 2111 | return -ENOTSUP; |
| 2112 | } |
| 2113 | |
| 2114 | for (;;) { |
| 2115 | if (sector_num >= total_sectors) { |
| 2116 | return 0; |
| 2117 | } |
| 2118 | extent = find_extent(s, sector_num, extent); |
| 2119 | if (!extent) { |
| 2120 | fprintf(stderr, |
| 2121 | "ERROR: could not find extent for sector %" PRId64 "\n", |
| 2122 | sector_num); |
| 2123 | break; |
| 2124 | } |
| 2125 | ret = get_cluster_offset(bs, extent, NULL, |
| 2126 | sector_num << BDRV_SECTOR_BITS, |
Fam Zheng | c6ac36e | 2014-07-30 14:39:10 +0800 | [diff] [blame] | 2127 | false, &cluster_offset, 0, 0); |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 2128 | if (ret == VMDK_ERROR) { |
| 2129 | fprintf(stderr, |
| 2130 | "ERROR: could not get cluster_offset for sector %" |
| 2131 | PRId64 "\n", sector_num); |
| 2132 | break; |
| 2133 | } |
| 2134 | if (ret == VMDK_OK && cluster_offset >= bdrv_getlength(extent->file)) { |
| 2135 | fprintf(stderr, |
| 2136 | "ERROR: cluster offset for sector %" |
| 2137 | PRId64 " points after EOF\n", sector_num); |
| 2138 | break; |
| 2139 | } |
| 2140 | sector_num += extent->cluster_sectors; |
| 2141 | } |
| 2142 | |
| 2143 | result->corruptions++; |
| 2144 | return 0; |
| 2145 | } |
| 2146 | |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2147 | static ImageInfoSpecific *vmdk_get_specific_info(BlockDriverState *bs) |
| 2148 | { |
| 2149 | int i; |
| 2150 | BDRVVmdkState *s = bs->opaque; |
| 2151 | ImageInfoSpecific *spec_info = g_new0(ImageInfoSpecific, 1); |
| 2152 | ImageInfoList **next; |
| 2153 | |
| 2154 | *spec_info = (ImageInfoSpecific){ |
| 2155 | .kind = IMAGE_INFO_SPECIFIC_KIND_VMDK, |
| 2156 | { |
| 2157 | .vmdk = g_new0(ImageInfoSpecificVmdk, 1), |
| 2158 | }, |
| 2159 | }; |
| 2160 | |
| 2161 | *spec_info->vmdk = (ImageInfoSpecificVmdk) { |
| 2162 | .create_type = g_strdup(s->create_type), |
| 2163 | .cid = s->cid, |
| 2164 | .parent_cid = s->parent_cid, |
| 2165 | }; |
| 2166 | |
| 2167 | next = &spec_info->vmdk->extents; |
| 2168 | for (i = 0; i < s->num_extents; i++) { |
| 2169 | *next = g_new0(ImageInfoList, 1); |
| 2170 | (*next)->value = vmdk_get_extent_info(&s->extents[i]); |
| 2171 | (*next)->next = NULL; |
| 2172 | next = &(*next)->next; |
| 2173 | } |
| 2174 | |
| 2175 | return spec_info; |
| 2176 | } |
| 2177 | |
Fam Zheng | 5f58330 | 2014-11-14 12:09:21 +0800 | [diff] [blame] | 2178 | static bool vmdk_extents_type_eq(const VmdkExtent *a, const VmdkExtent *b) |
| 2179 | { |
| 2180 | return a->flat == b->flat && |
| 2181 | a->compressed == b->compressed && |
| 2182 | (a->flat || a->cluster_sectors == b->cluster_sectors); |
| 2183 | } |
| 2184 | |
Fam Zheng | 74fe188 | 2014-05-06 21:08:45 +0800 | [diff] [blame] | 2185 | static int vmdk_get_info(BlockDriverState *bs, BlockDriverInfo *bdi) |
| 2186 | { |
| 2187 | int i; |
| 2188 | BDRVVmdkState *s = bs->opaque; |
| 2189 | assert(s->num_extents); |
Fam Zheng | 5f58330 | 2014-11-14 12:09:21 +0800 | [diff] [blame] | 2190 | |
| 2191 | /* See if we have multiple extents but they have different cases */ |
| 2192 | for (i = 1; i < s->num_extents; i++) { |
| 2193 | if (!vmdk_extents_type_eq(&s->extents[0], &s->extents[i])) { |
| 2194 | return -ENOTSUP; |
| 2195 | } |
| 2196 | } |
Fam Zheng | 74fe188 | 2014-05-06 21:08:45 +0800 | [diff] [blame] | 2197 | bdi->needs_compressed_writes = s->extents[0].compressed; |
| 2198 | if (!s->extents[0].flat) { |
| 2199 | bdi->cluster_size = s->extents[0].cluster_sectors << BDRV_SECTOR_BITS; |
| 2200 | } |
Fam Zheng | 74fe188 | 2014-05-06 21:08:45 +0800 | [diff] [blame] | 2201 | return 0; |
| 2202 | } |
| 2203 | |
Stefan Hajnoczi | c75f3bd | 2014-05-08 16:34:54 +0200 | [diff] [blame] | 2204 | static void vmdk_detach_aio_context(BlockDriverState *bs) |
| 2205 | { |
| 2206 | BDRVVmdkState *s = bs->opaque; |
| 2207 | int i; |
| 2208 | |
| 2209 | for (i = 0; i < s->num_extents; i++) { |
| 2210 | bdrv_detach_aio_context(s->extents[i].file); |
| 2211 | } |
| 2212 | } |
| 2213 | |
| 2214 | static void vmdk_attach_aio_context(BlockDriverState *bs, |
| 2215 | AioContext *new_context) |
| 2216 | { |
| 2217 | BDRVVmdkState *s = bs->opaque; |
| 2218 | int i; |
| 2219 | |
| 2220 | for (i = 0; i < s->num_extents; i++) { |
| 2221 | bdrv_attach_aio_context(s->extents[i].file, new_context); |
| 2222 | } |
| 2223 | } |
| 2224 | |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 2225 | static QemuOptsList vmdk_create_opts = { |
| 2226 | .name = "vmdk-create-opts", |
| 2227 | .head = QTAILQ_HEAD_INITIALIZER(vmdk_create_opts.head), |
| 2228 | .desc = { |
| 2229 | { |
| 2230 | .name = BLOCK_OPT_SIZE, |
| 2231 | .type = QEMU_OPT_SIZE, |
| 2232 | .help = "Virtual disk size" |
| 2233 | }, |
| 2234 | { |
| 2235 | .name = BLOCK_OPT_ADAPTER_TYPE, |
| 2236 | .type = QEMU_OPT_STRING, |
| 2237 | .help = "Virtual adapter type, can be one of " |
| 2238 | "ide (default), lsilogic, buslogic or legacyESX" |
| 2239 | }, |
| 2240 | { |
| 2241 | .name = BLOCK_OPT_BACKING_FILE, |
| 2242 | .type = QEMU_OPT_STRING, |
| 2243 | .help = "File name of a base image" |
| 2244 | }, |
| 2245 | { |
| 2246 | .name = BLOCK_OPT_COMPAT6, |
| 2247 | .type = QEMU_OPT_BOOL, |
| 2248 | .help = "VMDK version 6 image", |
| 2249 | .def_value_str = "off" |
| 2250 | }, |
| 2251 | { |
| 2252 | .name = BLOCK_OPT_SUBFMT, |
| 2253 | .type = QEMU_OPT_STRING, |
| 2254 | .help = |
| 2255 | "VMDK flat extent format, can be one of " |
| 2256 | "{monolithicSparse (default) | monolithicFlat | twoGbMaxExtentSparse | twoGbMaxExtentFlat | streamOptimized} " |
| 2257 | }, |
| 2258 | { |
| 2259 | .name = BLOCK_OPT_ZEROED_GRAIN, |
| 2260 | .type = QEMU_OPT_BOOL, |
| 2261 | .help = "Enable efficient zero writes " |
| 2262 | "using the zeroed-grain GTE feature" |
| 2263 | }, |
| 2264 | { /* end of list */ } |
| 2265 | } |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 2266 | }; |
| 2267 | |
Anthony Liguori | 5efa9d5 | 2009-05-09 17:03:42 -0500 | [diff] [blame] | 2268 | static BlockDriver bdrv_vmdk = { |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2269 | .format_name = "vmdk", |
| 2270 | .instance_size = sizeof(BDRVVmdkState), |
| 2271 | .bdrv_probe = vmdk_probe, |
| 2272 | .bdrv_open = vmdk_open, |
Peter Lieven | f43aa8e | 2014-01-29 09:34:16 +0100 | [diff] [blame] | 2273 | .bdrv_check = vmdk_check, |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2274 | .bdrv_reopen_prepare = vmdk_reopen_prepare, |
| 2275 | .bdrv_read = vmdk_co_read, |
| 2276 | .bdrv_write = vmdk_co_write, |
Fam Zheng | ba0ad89 | 2014-05-06 21:08:44 +0800 | [diff] [blame] | 2277 | .bdrv_write_compressed = vmdk_write_compressed, |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2278 | .bdrv_co_write_zeroes = vmdk_co_write_zeroes, |
| 2279 | .bdrv_close = vmdk_close, |
Chunyan Liu | c282e1f | 2014-06-05 17:21:11 +0800 | [diff] [blame] | 2280 | .bdrv_create = vmdk_create, |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2281 | .bdrv_co_flush_to_disk = vmdk_co_flush, |
Paolo Bonzini | b6b8a33 | 2013-09-04 19:00:28 +0200 | [diff] [blame] | 2282 | .bdrv_co_get_block_status = vmdk_co_get_block_status, |
Fam Zheng | da7a50f | 2013-07-01 11:33:17 +0800 | [diff] [blame] | 2283 | .bdrv_get_allocated_file_size = vmdk_get_allocated_file_size, |
| 2284 | .bdrv_has_zero_init = vmdk_has_zero_init, |
Fam Zheng | f4c129a | 2013-10-31 10:06:23 +0800 | [diff] [blame] | 2285 | .bdrv_get_specific_info = vmdk_get_specific_info, |
Kevin Wolf | d34682c | 2013-12-11 19:26:16 +0100 | [diff] [blame] | 2286 | .bdrv_refresh_limits = vmdk_refresh_limits, |
Fam Zheng | 74fe188 | 2014-05-06 21:08:45 +0800 | [diff] [blame] | 2287 | .bdrv_get_info = vmdk_get_info, |
Stefan Hajnoczi | c75f3bd | 2014-05-08 16:34:54 +0200 | [diff] [blame] | 2288 | .bdrv_detach_aio_context = vmdk_detach_aio_context, |
| 2289 | .bdrv_attach_aio_context = vmdk_attach_aio_context, |
Kevin Wolf | 0e7e198 | 2009-05-18 16:42:10 +0200 | [diff] [blame] | 2290 | |
Kevin Wolf | 8ee79e7 | 2014-06-04 15:09:35 +0200 | [diff] [blame] | 2291 | .supports_backing = true, |
Chunyan Liu | 5820f1d | 2014-06-05 17:21:09 +0800 | [diff] [blame] | 2292 | .create_opts = &vmdk_create_opts, |
bellard | ea2384d | 2004-08-01 21:59:26 +0000 | [diff] [blame] | 2293 | }; |
Anthony Liguori | 5efa9d5 | 2009-05-09 17:03:42 -0500 | [diff] [blame] | 2294 | |
| 2295 | static void bdrv_vmdk_init(void) |
| 2296 | { |
| 2297 | bdrv_register(&bdrv_vmdk); |
| 2298 | } |
| 2299 | |
| 2300 | block_init(bdrv_vmdk_init); |