#include "qemu-coroutine.h"
#include "qemu-timer.h"
#include "qapi-types.h"
+#include "qerror.h"
+#include "monitor.h"
-#define BLOCK_FLAG_ENCRYPT 1
-#define BLOCK_FLAG_COMPAT6 4
+#define BLOCK_FLAG_ENCRYPT 1
+#define BLOCK_FLAG_COMPAT6 4
+#define BLOCK_FLAG_LAZY_REFCOUNTS 8
#define BLOCK_IO_LIMIT_READ 0
#define BLOCK_IO_LIMIT_WRITE 1
#define BLOCK_IO_SLICE_TIME 100000000
#define NANOSECONDS_PER_SECOND 1000000000.0
-#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"
+#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"
+#define BLOCK_OPT_COMPAT_LEVEL "compat"
+#define BLOCK_OPT_LAZY_REFCOUNTS "lazy_refcounts"
typedef struct BdrvTrackedRequest BdrvTrackedRequest;
-typedef struct AIOPool {
- void (*cancel)(BlockDriverAIOCB *acb);
- int aiocb_size;
- BlockDriverAIOCB *free_aiocb;
-} AIOPool;
-
typedef struct BlockIOLimit {
int64_t bps[3];
int64_t iops[3];
uint64_t ios[2];
} BlockIOBaseValue;
-typedef void BlockJobCancelFunc(void *opaque);
-typedef struct BlockJob BlockJob;
-typedef struct BlockJobType {
- /** Derived BlockJob struct size */
- size_t instance_size;
-
- /** String describing the operation, part of query-block-jobs QMP API */
- const char *job_type;
-
- /** Optional callback for job types that support setting a speed limit */
- int (*set_speed)(BlockJob *job, int64_t value);
-} BlockJobType;
-
-/**
- * Long-running operation on a BlockDriverState
- */
-struct BlockJob {
- const BlockJobType *job_type;
- BlockDriverState *bs;
- bool cancelled;
-
- /* These fields are published by the query-block-jobs QMP API */
- int64_t offset;
- int64_t len;
- int64_t speed;
-
- BlockDriverCompletionFunc *cb;
- void *opaque;
-};
-
struct BlockDriver {
const char *format_name;
int instance_size;
int (*bdrv_probe)(const uint8_t *buf, int buf_size, const char *filename);
int (*bdrv_probe_device)(const char *filename);
+
+ /* For handling image reopen for split or non-split files */
+ int (*bdrv_reopen_prepare)(BDRVReopenState *reopen_state,
+ BlockReopenQueue *queue, Error **errp);
+ void (*bdrv_reopen_commit)(BDRVReopenState *reopen_state);
+ void (*bdrv_reopen_abort)(BDRVReopenState *reopen_state);
+
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,
int (*bdrv_write)(BlockDriverState *bs, int64_t sector_num,
const uint8_t *buf, int nb_sectors);
void (*bdrv_close)(BlockDriverState *bs);
+ void (*bdrv_rebind)(BlockDriverState *bs);
int (*bdrv_create)(const char *filename, QEMUOptionParameter *options);
int (*bdrv_set_key)(BlockDriverState *bs, const char *key);
int (*bdrv_make_empty)(BlockDriverState *bs);
*/
int coroutine_fn (*bdrv_co_flush_to_os)(BlockDriverState *bs);
- 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);
/* removable device specific */
int (*bdrv_is_inserted)(BlockDriverState *bs);
int (*bdrv_media_changed)(BlockDriverState *bs);
- void (*bdrv_eject)(BlockDriverState *bs, int eject_flag);
+ void (*bdrv_eject)(BlockDriverState *bs, bool eject_flag);
void (*bdrv_lock_medium)(BlockDriverState *bs, bool locked);
/* to control generic scsi devices */
* Returns 0 for completed check, -errno for internal errors.
* The check results are stored in result.
*/
- int (*bdrv_check)(BlockDriverState* bs, BdrvCheckResult *result);
+ int (*bdrv_check)(BlockDriverState* bs, BdrvCheckResult *result,
+ BdrvCheckMode fix);
void (*bdrv_debug_event)(BlockDriverState *bs, BlkDebugEvent event);
QLIST_ENTRY(BlockDriver) list;
};
+/*
+ * Note: the function bdrv_append() copies and swaps contents of
+ * BlockDriverStates, so if you add new fields to this struct, please
+ * inspect bdrv_append() to determine if the new fields need to be
+ * copied as well.
+ */
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 encrypted; /* if true, the media is encrypted */
int valid_key; /* if true, a valid encryption key has been set */
/* number of in-flight copy-on-read requests */
unsigned int copy_on_read_in_flight;
- /* async read/write emulation */
-
- void *sync_aiocb;
-
/* the time for latest disk I/O */
int64_t slice_time;
int64_t slice_start;
/* NOTE: the following infos are only hints for real hardware
drivers. They are not used by the block driver */
- int cyls, heads, secs, translation;
- BlockErrorAction on_read_error, on_write_error;
+ BlockdevOnError on_read_error, on_write_error;
bool iostatus_enabled;
BlockDeviceIoStatus iostatus;
char device_name[32];
int64_t dirty_count;
int in_use; /* users other than guest access, eg. block migration */
QTAILQ_ENTRY(BlockDriverState) list;
- void *private;
QLIST_HEAD(, BdrvTrackedRequest) tracked_requests;
/* long-running background operation */
BlockJob *job;
-};
-struct BlockDriverAIOCB {
- AIOPool *pool;
- BlockDriverState *bs;
- BlockDriverCompletionFunc *cb;
- void *opaque;
- BlockDriverAIOCB *next;
};
-void get_tmp_filename(char *filename, int size);
-
-void *qemu_aio_get(AIOPool *pool, BlockDriverState *bs,
- BlockDriverCompletionFunc *cb, void *opaque);
-void qemu_aio_release(void *p);
+int get_tmp_filename(char *filename, int size);
void bdrv_set_io_limits(BlockDriverState *bs,
BlockIOLimit *io_limits);
#ifdef _WIN32
int is_windows_drive(const char *filename);
#endif
+void bdrv_emit_qmp_error_event(const BlockDriverState *bdrv,
+ enum MonitorEvent ev,
+ BlockErrorAction action, bool is_read);
-void *block_job_create(const BlockJobType *job_type, BlockDriverState *bs,
- BlockDriverCompletionFunc *cb, void *opaque);
-void block_job_complete(BlockJob *job, int ret);
-int block_job_set_speed(BlockJob *job, int64_t value);
-void block_job_cancel(BlockJob *job);
-bool block_job_is_cancelled(BlockJob *job);
+/**
+ * stream_start:
+ * @bs: Block device to operate on.
+ * @base: Block device that will become the new base, or %NULL to
+ * flatten the whole backing file chain onto @bs.
+ * @base_id: The file name that will be written to @bs as the new
+ * backing file if the job completes. Ignored if @base is %NULL.
+ * @speed: The maximum speed, in bytes per second, or 0 for unlimited.
+ * @on_error: The action to take upon error.
+ * @cb: Completion function for the job.
+ * @opaque: Opaque pointer value passed to @cb.
+ * @errp: Error object.
+ *
+ * Start a streaming operation on @bs. Clusters that are unallocated
+ * in @bs, but allocated in any image between @base and @bs (both
+ * exclusive) will be written to @bs. At the end of a successful
+ * streaming job, the backing file of @bs will be changed to
+ * @base_id in the written image and to @base in the live BlockDriverState.
+ */
+void stream_start(BlockDriverState *bs, BlockDriverState *base,
+ const char *base_id, int64_t speed, BlockdevOnError on_error,
+ BlockDriverCompletionFunc *cb,
+ void *opaque, Error **errp);
-int stream_start(BlockDriverState *bs, BlockDriverState *base,
- const char *base_id, BlockDriverCompletionFunc *cb,
- void *opaque);
+/**
+ * commit_start:
+ * @bs: Top Block device
+ * @base: Block device that will be written into, and become the new top
+ * @speed: The maximum speed, in bytes per second, or 0 for unlimited.
+ * @on_error: The action to take upon error.
+ * @cb: Completion function for the job.
+ * @opaque: Opaque pointer value passed to @cb.
+ * @errp: Error object.
+ *
+ */
+void commit_start(BlockDriverState *bs, BlockDriverState *base,
+ BlockDriverState *top, int64_t speed,
+ BlockdevOnError on_error, BlockDriverCompletionFunc *cb,
+ void *opaque, Error **errp);
#endif /* BLOCK_INT_H */
projects / mirror_qemu.git / blobdiff