#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;
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);
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_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);
int (*bdrv_media_changed)(BlockDriverState *bs);
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;
+
+
+ /*
+ * Returns 0 for completed check, -errno for internal errors.
+ * The check results are stored in result.
+ */
+ int (*bdrv_check)(BlockDriverState* bs, BdrvCheckResult *result);
- /* 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);
+ void (*bdrv_debug_event)(BlockDriverState *bs, BlkDebugEvent event);
- struct BlockDriver *next;
+ /*
+ * 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 */
int media_changed;
BlockDriverState *backing_hd;
+ BlockDriverState *file;
+
/* async read/write emulation */
void *sync_aiocb;
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;
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 */
projects / qemu.git / blobdiff