X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=block_int.h;h=efb68038c4c6cc79b85c055cdd92cd4d8fd7f962;hb=e19a4e89aeeae5ac9f91d4a28c2077f5dd5485d1;hp=dc4335982cd0764c89d32f198fa655a28fdb3a24;hpb=178e08a58f40dd5aef2ce774fe0850f5d0e56918;p=qemu.git diff --git a/block_int.h b/block_int.h index dc4335982..efb68038c 100644 --- a/block_int.h +++ b/block_int.h @@ -25,11 +25,22 @@ #define BLOCK_INT_H #include "block.h" +#include "qemu-option.h" +#include "qemu-queue.h" #define BLOCK_FLAG_ENCRYPT 1 -#define BLOCK_FLAG_COMPRESS 2 #define BLOCK_FLAG_COMPAT6 4 +#define BLOCK_OPT_SIZE "size" +#define BLOCK_OPT_ENCRYPT "encryption" +#define BLOCK_OPT_COMPAT6 "compat6" +#define BLOCK_OPT_BACKING_FILE "backing_file" +#define BLOCK_OPT_BACKING_FMT "backing_fmt" +#define BLOCK_OPT_CLUSTER_SIZE "cluster_size" +#define BLOCK_OPT_TABLE_SIZE "table_size" +#define BLOCK_OPT_PREALLOC "preallocation" +#define BLOCK_OPT_SUBFMT "subformat" + typedef struct AIOPool { void (*cancel)(BlockDriverAIOCB *acb); int aiocb_size; @@ -40,32 +51,42 @@ struct BlockDriver { const char *format_name; int instance_size; int (*bdrv_probe)(const uint8_t *buf, int buf_size, const char *filename); - int (*bdrv_open)(BlockDriverState *bs, const char *filename, int flags); + int (*bdrv_probe_device)(const char *filename); + int (*bdrv_open)(BlockDriverState *bs, int flags); + int (*bdrv_file_open)(BlockDriverState *bs, const char *filename, int flags); int (*bdrv_read)(BlockDriverState *bs, int64_t sector_num, uint8_t *buf, int nb_sectors); int (*bdrv_write)(BlockDriverState *bs, int64_t sector_num, const uint8_t *buf, int nb_sectors); void (*bdrv_close)(BlockDriverState *bs); - int (*bdrv_create)(const char *filename, int64_t total_sectors, - const char *backing_file, int flags); - void (*bdrv_flush)(BlockDriverState *bs); + int (*bdrv_create)(const char *filename, QEMUOptionParameter *options); + int (*bdrv_flush)(BlockDriverState *bs); int (*bdrv_is_allocated)(BlockDriverState *bs, int64_t sector_num, int nb_sectors, int *pnum); int (*bdrv_set_key)(BlockDriverState *bs, const char *key); int (*bdrv_make_empty)(BlockDriverState *bs); /* aio */ - BlockDriverAIOCB *(*bdrv_aio_read)(BlockDriverState *bs, - int64_t sector_num, uint8_t *buf, int nb_sectors, + BlockDriverAIOCB *(*bdrv_aio_readv)(BlockDriverState *bs, + int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, BlockDriverCompletionFunc *cb, void *opaque); - BlockDriverAIOCB *(*bdrv_aio_write)(BlockDriverState *bs, - int64_t sector_num, const uint8_t *buf, int nb_sectors, + BlockDriverAIOCB *(*bdrv_aio_writev)(BlockDriverState *bs, + int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, BlockDriverCompletionFunc *cb, void *opaque); - void (*bdrv_aio_cancel)(BlockDriverAIOCB *acb); - int aiocb_size; + BlockDriverAIOCB *(*bdrv_aio_flush)(BlockDriverState *bs, + BlockDriverCompletionFunc *cb, void *opaque); + int (*bdrv_discard)(BlockDriverState *bs, int64_t sector_num, + int nb_sectors); + + int (*bdrv_aio_multiwrite)(BlockDriverState *bs, BlockRequest *reqs, + int num_reqs); + int (*bdrv_merge_requests)(BlockDriverState *bs, BlockRequest* a, + BlockRequest *b); + const char *protocol_name; int (*bdrv_truncate)(BlockDriverState *bs, int64_t offset); int64_t (*bdrv_getlength)(BlockDriverState *bs); + int64_t (*bdrv_get_allocated_file_size)(BlockDriverState *bs); int (*bdrv_write_compressed)(BlockDriverState *bs, int64_t sector_num, const uint8_t *buf, int nb_sectors); @@ -76,12 +97,17 @@ struct BlockDriver { int (*bdrv_snapshot_delete)(BlockDriverState *bs, const char *snapshot_id); int (*bdrv_snapshot_list)(BlockDriverState *bs, QEMUSnapshotInfo **psn_info); + int (*bdrv_snapshot_load_tmp)(BlockDriverState *bs, + const char *snapshot_name); int (*bdrv_get_info)(BlockDriverState *bs, BlockDriverInfo *bdi); - int (*bdrv_put_buffer)(BlockDriverState *bs, const uint8_t *buf, - int64_t pos, int size); - int (*bdrv_get_buffer)(BlockDriverState *bs, uint8_t *buf, - int64_t pos, int size); + int (*bdrv_save_vmstate)(BlockDriverState *bs, const uint8_t *buf, + int64_t pos, int size); + int (*bdrv_load_vmstate)(BlockDriverState *bs, uint8_t *buf, + int64_t pos, int size); + + int (*bdrv_change_backing_file)(BlockDriverState *bs, + const char *backing_file, const char *backing_fmt); /* removable device specific */ int (*bdrv_is_inserted)(BlockDriverState *bs); @@ -95,32 +121,48 @@ struct BlockDriver { unsigned long int req, void *buf, BlockDriverCompletionFunc *cb, void *opaque); - AIOPool aio_pool; + /* List of options for creating images, terminated by name == NULL */ + QEMUOptionParameter *create_options; - /* new create with backing file format */ - int (*bdrv_create2)(const char *filename, int64_t total_sectors, - const char *backing_file, const char *backing_format, - int flags); - struct BlockDriver *next; + /* + * Returns 0 for completed check, -errno for internal errors. + * The check results are stored in result. + */ + int (*bdrv_check)(BlockDriverState* bs, BdrvCheckResult *result); + + void (*bdrv_debug_event)(BlockDriverState *bs, BlkDebugEvent event); + + /* + * Returns 1 if newly created images are guaranteed to contain only + * zeros, 0 otherwise. + */ + int (*bdrv_has_zero_init)(BlockDriverState *bs); + + QLIST_ENTRY(BlockDriver) list; }; struct BlockDriverState { int64_t total_sectors; /* if we are reading a disk image, give its size in sectors */ int read_only; /* if true, the media is read only */ + int keep_read_only; /* if true, the media was requested to stay read only */ + int open_flags; /* flags used to open the file, re-used for re-open */ int removable; /* if true, the media can be removed */ int locked; /* if true, the media cannot temporarily be ejected */ + int tray_open; /* if true, the virtual tray is open */ int encrypted; /* if true, the media is encrypted */ int valid_key; /* if true, a valid encryption key has been set */ int sg; /* if true, the device is a /dev/sg* */ /* event callback when inserting/removing */ - void (*change_cb)(void *opaque); + void (*change_cb)(void *opaque, int reason); void *change_opaque; BlockDriver *drv; /* NULL means no media */ void *opaque; + DeviceState *peer; + char filename[1024]; char backing_file[1024]; /* if non zero, the image is a diff of this file image */ @@ -129,6 +171,8 @@ struct BlockDriverState { int media_changed; BlockDriverState *backing_hd; + BlockDriverState *file; + /* async read/write emulation */ void *sync_aiocb; @@ -138,19 +182,32 @@ struct BlockDriverState { uint64_t wr_bytes; uint64_t rd_ops; uint64_t wr_ops; + uint64_t wr_highest_sector; /* Whether the disk can expand beyond total_sectors */ int growable; + /* the memory alignment required for the buffers handled by this driver */ + int buffer_alignment; + + /* do we need to tell the quest if we have a volatile write cache? */ + int enable_write_cache; + /* NOTE: the following infos are only hints for real hardware drivers. They are not used by the block driver */ int cyls, heads, secs, translation; - int type; + BlockErrorAction on_read_error, on_write_error; char device_name[32]; - BlockDriverState *next; + unsigned long *dirty_bitmap; + int64_t dirty_count; + int in_use; /* users other than guest access, eg. block migration */ + QTAILQ_ENTRY(BlockDriverState) list; void *private; }; +#define CHANGE_MEDIA 0x01 +#define CHANGE_SIZE 0x02 + struct BlockDriverAIOCB { AIOPool *pool; BlockDriverState *bs; @@ -161,15 +218,49 @@ struct BlockDriverAIOCB { void get_tmp_filename(char *filename, int size); -void aio_pool_init(AIOPool *pool, int aiocb_size, - void (*cancel)(BlockDriverAIOCB *acb)); - -void *qemu_aio_get(BlockDriverState *bs, BlockDriverCompletionFunc *cb, - void *opaque); -void *qemu_aio_get_pool(AIOPool *pool, BlockDriverState *bs, - BlockDriverCompletionFunc *cb, void *opaque); +void *qemu_aio_get(AIOPool *pool, BlockDriverState *bs, + BlockDriverCompletionFunc *cb, void *opaque); void qemu_aio_release(void *p); -extern BlockDriverState *bdrv_first; +void *qemu_blockalign(BlockDriverState *bs, size_t size); + +#ifdef _WIN32 +int is_windows_drive(const char *filename); +#endif + +typedef struct BlockConf { + BlockDriverState *bs; + uint16_t physical_block_size; + uint16_t logical_block_size; + uint16_t min_io_size; + uint32_t opt_io_size; + int32_t bootindex; + uint32_t discard_granularity; +} BlockConf; + +static inline unsigned int get_physical_block_exp(BlockConf *conf) +{ + unsigned int exp = 0, size; + + for (size = conf->physical_block_size; + size > conf->logical_block_size; + size >>= 1) { + exp++; + } + + return exp; +} + +#define DEFINE_BLOCK_PROPERTIES(_state, _conf) \ + DEFINE_PROP_DRIVE("drive", _state, _conf.bs), \ + DEFINE_PROP_UINT16("logical_block_size", _state, \ + _conf.logical_block_size, 512), \ + DEFINE_PROP_UINT16("physical_block_size", _state, \ + _conf.physical_block_size, 512), \ + DEFINE_PROP_UINT16("min_io_size", _state, _conf.min_io_size, 0), \ + DEFINE_PROP_UINT32("opt_io_size", _state, _conf.opt_io_size, 0), \ + DEFINE_PROP_INT32("bootindex", _state, _conf.bootindex, -1), \ + DEFINE_PROP_UINT32("discard_granularity", _state, \ + _conf.discard_granularity, 0) #endif /* BLOCK_INT_H */