diff options
Diffstat (limited to 'block.h')
| -rw-r--r-- | block.h | 28 |
1 files changed, 22 insertions, 6 deletions
@@ -28,6 +28,20 @@ typedef struct QEMUSnapshotInfo { uint64_t vm_clock_nsec; /* VM clock relative to boot */ } QEMUSnapshotInfo; +/* Callbacks for block device models */ +typedef struct BlockDevOps { + /* + * Runs when virtual media changed (monitor commands eject, change) + * Beware: doesn't run when a host device's physical media + * changes. Sure would be useful if it did. + */ + void (*change_media_cb)(void *opaque); + /* + * Runs when the size changed (e.g. monitor command block_resize) + */ + void (*resize_cb)(void *opaque); +} BlockDevOps; + #define BDRV_O_RDWR 0x0002 #define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */ #define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */ @@ -74,9 +88,12 @@ int bdrv_file_open(BlockDriverState **pbs, const char *filename, int flags); int bdrv_open(BlockDriverState *bs, const char *filename, int flags, BlockDriver *drv); void bdrv_close(BlockDriverState *bs); -int bdrv_attach(BlockDriverState *bs, DeviceState *qdev); -void bdrv_detach(BlockDriverState *bs, DeviceState *qdev); -DeviceState *bdrv_get_attached(BlockDriverState *bs); +int bdrv_attach_dev(BlockDriverState *bs, void *dev); +void bdrv_attach_dev_nofail(BlockDriverState *bs, void *dev); +void bdrv_detach_dev(BlockDriverState *bs, void *dev); +void *bdrv_get_attached_dev(BlockDriverState *bs); +void bdrv_set_dev_ops(BlockDriverState *bs, const BlockDevOps *ops, + void *opaque); int bdrv_read(BlockDriverState *bs, int64_t sector_num, uint8_t *buf, int nb_sectors); int bdrv_write(BlockDriverState *bs, int64_t sector_num, @@ -192,9 +209,6 @@ int bdrv_media_changed(BlockDriverState *bs); int bdrv_is_locked(BlockDriverState *bs); void bdrv_set_locked(BlockDriverState *bs, int locked); int bdrv_eject(BlockDriverState *bs, int eject_flag); -void bdrv_set_change_cb(BlockDriverState *bs, - void (*change_cb)(void *opaque, int reason), - void *opaque); void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size); BlockDriverState *bdrv_find(const char *name); BlockDriverState *bdrv_next(BlockDriverState *bs); @@ -244,6 +258,8 @@ int bdrv_img_create(const char *filename, const char *fmt, const char *base_filename, const char *base_fmt, char *options, uint64_t img_size, int flags); +void *qemu_blockalign(BlockDriverState *bs, size_t size); + #define BDRV_SECTORS_PER_DIRTY_CHUNK 2048 void bdrv_set_dirty_tracking(BlockDriverState *bs, int enable); |