diff options
Diffstat (limited to 'block/qcow2.h')
| -rw-r--r-- | block/qcow2.h | 69 |
1 files changed, 65 insertions, 4 deletions
diff --git a/block/qcow2.h b/block/qcow2.h index 87b15eb4aa..96a8d43c17 100644 --- a/block/qcow2.h +++ b/block/qcow2.h @@ -25,7 +25,7 @@ #ifndef BLOCK_QCOW2_H #define BLOCK_QCOW2_H -#include "crypto/cipher.h" +#include "crypto/block.h" #include "qemu/coroutine.h" //#define DEBUG_ALLOC @@ -36,6 +36,7 @@ #define QCOW_CRYPT_NONE 0 #define QCOW_CRYPT_AES 1 +#define QCOW_CRYPT_LUKS 2 #define QCOW_MAX_CRYPT_CLUSTERS 32 #define QCOW_MAX_SNAPSHOTS 65536 @@ -52,6 +53,10 @@ * space for snapshot names and IDs */ #define QCOW_MAX_SNAPSHOTS_SIZE (1024 * QCOW_MAX_SNAPSHOTS) +/* Bitmap header extension constraints */ +#define QCOW2_MAX_BITMAPS 65535 +#define QCOW2_MAX_BITMAP_DIRECTORY_SIZE (1024 * QCOW2_MAX_BITMAPS) + /* indicate that the refcount of the referenced cluster is exactly one. */ #define QCOW_OFLAG_COPIED (1ULL << 63) /* indicate that the cluster is compressed (they never have the copied flag) */ @@ -163,6 +168,11 @@ typedef struct QCowSnapshot { struct Qcow2Cache; typedef struct Qcow2Cache Qcow2Cache; +typedef struct Qcow2CryptoHeaderExtension { + uint64_t offset; + uint64_t length; +} QEMU_PACKED Qcow2CryptoHeaderExtension; + typedef struct Qcow2UnknownHeaderExtension { uint32_t magic; uint32_t len; @@ -195,6 +205,14 @@ enum { QCOW2_COMPAT_FEAT_MASK = QCOW2_COMPAT_LAZY_REFCOUNTS, }; +/* Autoclear feature bits */ +enum { + QCOW2_AUTOCLEAR_BITMAPS_BITNR = 0, + QCOW2_AUTOCLEAR_BITMAPS = 1 << QCOW2_AUTOCLEAR_BITMAPS_BITNR, + + QCOW2_AUTOCLEAR_MASK = QCOW2_AUTOCLEAR_BITMAPS, +}; + enum qcow2_discard_type { QCOW2_DISCARD_NEVER = 0, QCOW2_DISCARD_ALWAYS, @@ -222,6 +240,13 @@ typedef uint64_t Qcow2GetRefcountFunc(const void *refcount_array, typedef void Qcow2SetRefcountFunc(void *refcount_array, uint64_t index, uint64_t value); +typedef struct Qcow2BitmapHeaderExt { + uint32_t nb_bitmaps; + uint32_t reserved32; + uint64_t bitmap_directory_size; + uint64_t bitmap_directory_offset; +} QEMU_PACKED Qcow2BitmapHeaderExt; + typedef struct BDRVQcow2State { int cluster_bits; int cluster_size; @@ -257,13 +282,21 @@ typedef struct BDRVQcow2State { CoMutex lock; - QCryptoCipher *cipher; /* current cipher, NULL if no key yet */ + Qcow2CryptoHeaderExtension crypto_header; /* QCow2 header extension */ + QCryptoBlockOpenOptions *crypto_opts; /* Disk encryption runtime options */ + QCryptoBlock *crypto; /* Disk encryption format driver */ + bool crypt_physical_offset; /* Whether to use virtual or physical offset + for encryption initialization vector tweak */ uint32_t crypt_method_header; uint64_t snapshots_offset; int snapshots_size; unsigned int nb_snapshots; QCowSnapshot *snapshots; + uint32_t nb_bitmaps; + uint64_t bitmap_directory_size; + uint64_t bitmap_directory_offset; + int flags; int qcow_version; bool use_lazy_refcounts; @@ -492,6 +525,10 @@ static inline uint64_t refcount_diff(uint64_t r1, uint64_t r2) int qcow2_backing_read1(BlockDriverState *bs, QEMUIOVector *qiov, int64_t sector_num, int nb_sectors); +int64_t qcow2_refcount_metadata_size(int64_t clusters, size_t cluster_size, + int refcount_order, bool generous_increase, + uint64_t *refblock_count); + int qcow2_mark_dirty(BlockDriverState *bs); int qcow2_mark_corrupt(BlockDriverState *bs); int qcow2_mark_consistent(BlockDriverState *bs); @@ -512,6 +549,11 @@ int qcow2_update_cluster_refcount(BlockDriverState *bs, int64_t cluster_index, uint64_t addend, bool decrease, enum qcow2_discard_type type); +int64_t qcow2_refcount_area(BlockDriverState *bs, uint64_t offset, + uint64_t additional_clusters, bool exact_size, + int new_refblock_index, + uint64_t new_refblock_offset); + int64_t qcow2_alloc_clusters(BlockDriverState *bs, uint64_t size); int64_t qcow2_alloc_clusters_at(BlockDriverState *bs, uint64_t offset, int64_t nb_clusters); @@ -534,6 +576,10 @@ int qcow2_check_metadata_overlap(BlockDriverState *bs, int ign, int64_t offset, int64_t size); int qcow2_pre_write_overlap_check(BlockDriverState *bs, int ign, int64_t offset, int64_t size); +int qcow2_inc_refcounts_imrt(BlockDriverState *bs, BdrvCheckResult *res, + void **refcount_table, + int64_t *refcount_table_size, + int64_t offset, int64_t size); int qcow2_change_refcount_order(BlockDriverState *bs, int refcount_order, BlockDriverAmendStatusCB *status_cb, @@ -545,8 +591,7 @@ int qcow2_grow_l1_table(BlockDriverState *bs, uint64_t min_size, int qcow2_write_l1_entry(BlockDriverState *bs, int l1_index); int qcow2_decompress_cluster(BlockDriverState *bs, uint64_t cluster_offset); int qcow2_encrypt_sectors(BDRVQcow2State *s, int64_t sector_num, - uint8_t *out_buf, const uint8_t *in_buf, - int nb_sectors, bool enc, Error **errp); + uint8_t *buf, int nb_sectors, bool enc, Error **errp); int qcow2_get_cluster_offset(BlockDriverState *bs, uint64_t offset, unsigned int *bytes, uint64_t *cluster_offset); @@ -605,4 +650,20 @@ int qcow2_cache_get_empty(BlockDriverState *bs, Qcow2Cache *c, uint64_t offset, void **table); void qcow2_cache_put(BlockDriverState *bs, Qcow2Cache *c, void **table); +/* qcow2-bitmap.c functions */ +int qcow2_check_bitmaps_refcounts(BlockDriverState *bs, BdrvCheckResult *res, + void **refcount_table, + int64_t *refcount_table_size); +bool qcow2_load_autoloading_dirty_bitmaps(BlockDriverState *bs, Error **errp); +int qcow2_reopen_bitmaps_rw(BlockDriverState *bs, Error **errp); +void qcow2_store_persistent_dirty_bitmaps(BlockDriverState *bs, Error **errp); +int qcow2_reopen_bitmaps_ro(BlockDriverState *bs, Error **errp); +bool qcow2_can_store_new_dirty_bitmap(BlockDriverState *bs, + const char *name, + uint32_t granularity, + Error **errp); +void qcow2_remove_persistent_dirty_bitmap(BlockDriverState *bs, + const char *name, + Error **errp); + #endif |