b5042a3622
This patch keep the recursive way of doing things but simplify it by giving two responsabilities to all block filters implementors. They will need to do two things: -Set the is_filter field of their block driver to true. -Implement the bdrv_recurse_is_first_non_filter method of their block driver like it is done on the Quorum block driver. (block/quorum.c) [Paolo Bonzini <pbonzini@redhat.com> pointed out that this patch changes the semantics of blkverify, which now recurses down both bs->file and s->test_file. -- Stefan] Reported-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Benoit Canet <benoit@irqsave.net> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
503 lines
20 KiB
C
503 lines
20 KiB
C
/*
|
|
* QEMU System Emulator block driver
|
|
*
|
|
* Copyright (c) 2003 Fabrice Bellard
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
#ifndef BLOCK_INT_H
|
|
#define BLOCK_INT_H
|
|
|
|
#include "block/block.h"
|
|
#include "qemu/option.h"
|
|
#include "qemu/queue.h"
|
|
#include "block/coroutine.h"
|
|
#include "qemu/timer.h"
|
|
#include "qapi-types.h"
|
|
#include "qapi/qmp/qerror.h"
|
|
#include "monitor/monitor.h"
|
|
#include "qemu/hbitmap.h"
|
|
#include "block/snapshot.h"
|
|
#include "qemu/main-loop.h"
|
|
#include "qemu/throttle.h"
|
|
|
|
#define BLOCK_FLAG_ENCRYPT 1
|
|
#define BLOCK_FLAG_COMPAT6 4
|
|
#define BLOCK_FLAG_LAZY_REFCOUNTS 8
|
|
|
|
#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"
|
|
#define BLOCK_OPT_ADAPTER_TYPE "adapter_type"
|
|
#define BLOCK_OPT_REDUNDANCY "redundancy"
|
|
|
|
typedef struct BdrvTrackedRequest {
|
|
BlockDriverState *bs;
|
|
int64_t offset;
|
|
unsigned int bytes;
|
|
bool is_write;
|
|
|
|
bool serialising;
|
|
int64_t overlap_offset;
|
|
unsigned int overlap_bytes;
|
|
|
|
QLIST_ENTRY(BdrvTrackedRequest) list;
|
|
Coroutine *co; /* owner, used for deadlock detection */
|
|
CoQueue wait_queue; /* coroutines blocked on this request */
|
|
|
|
struct BdrvTrackedRequest *waiting_for;
|
|
} BdrvTrackedRequest;
|
|
|
|
struct BlockDriver {
|
|
const char *format_name;
|
|
int instance_size;
|
|
|
|
/* set to true if the BlockDriver is a block filter */
|
|
bool is_filter;
|
|
/* for snapshots block filter like Quorum can implement the
|
|
* following recursive callback.
|
|
* It's purpose is to recurse on the filter children while calling
|
|
* bdrv_recurse_is_first_non_filter on them.
|
|
* For a sample implementation look in the future Quorum block filter.
|
|
*/
|
|
bool (*bdrv_recurse_is_first_non_filter)(BlockDriverState *bs,
|
|
BlockDriverState *candidate);
|
|
|
|
int (*bdrv_probe)(const uint8_t *buf, int buf_size, const char *filename);
|
|
int (*bdrv_probe_device)(const char *filename);
|
|
|
|
/* Any driver implementing this callback is expected to be able to handle
|
|
* NULL file names in its .bdrv_open() implementation */
|
|
void (*bdrv_parse_filename)(const char *filename, QDict *options, Error **errp);
|
|
/* Drivers not implementing bdrv_parse_filename nor bdrv_open should have
|
|
* this field set to true, except ones that are defined only by their
|
|
* child's bs.
|
|
* An example of the last type will be the quorum block driver.
|
|
*/
|
|
bool bdrv_needs_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, QDict *options, int flags,
|
|
Error **errp);
|
|
int (*bdrv_file_open)(BlockDriverState *bs, QDict *options, int flags,
|
|
Error **errp);
|
|
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);
|
|
void (*bdrv_rebind)(BlockDriverState *bs);
|
|
int (*bdrv_create)(const char *filename, QEMUOptionParameter *options,
|
|
Error **errp);
|
|
int (*bdrv_set_key)(BlockDriverState *bs, const char *key);
|
|
int (*bdrv_make_empty)(BlockDriverState *bs);
|
|
/* aio */
|
|
BlockDriverAIOCB *(*bdrv_aio_readv)(BlockDriverState *bs,
|
|
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
|
|
BlockDriverCompletionFunc *cb, void *opaque);
|
|
BlockDriverAIOCB *(*bdrv_aio_writev)(BlockDriverState *bs,
|
|
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
|
|
BlockDriverCompletionFunc *cb, void *opaque);
|
|
BlockDriverAIOCB *(*bdrv_aio_flush)(BlockDriverState *bs,
|
|
BlockDriverCompletionFunc *cb, void *opaque);
|
|
BlockDriverAIOCB *(*bdrv_aio_discard)(BlockDriverState *bs,
|
|
int64_t sector_num, int nb_sectors,
|
|
BlockDriverCompletionFunc *cb, void *opaque);
|
|
|
|
int coroutine_fn (*bdrv_co_readv)(BlockDriverState *bs,
|
|
int64_t sector_num, int nb_sectors, QEMUIOVector *qiov);
|
|
int coroutine_fn (*bdrv_co_writev)(BlockDriverState *bs,
|
|
int64_t sector_num, int nb_sectors, QEMUIOVector *qiov);
|
|
/*
|
|
* Efficiently zero a region of the disk image. Typically an image format
|
|
* would use a compact metadata representation to implement this. This
|
|
* function pointer may be NULL and .bdrv_co_writev() will be called
|
|
* instead.
|
|
*/
|
|
int coroutine_fn (*bdrv_co_write_zeroes)(BlockDriverState *bs,
|
|
int64_t sector_num, int nb_sectors, BdrvRequestFlags flags);
|
|
int coroutine_fn (*bdrv_co_discard)(BlockDriverState *bs,
|
|
int64_t sector_num, int nb_sectors);
|
|
int64_t coroutine_fn (*bdrv_co_get_block_status)(BlockDriverState *bs,
|
|
int64_t sector_num, int nb_sectors, int *pnum);
|
|
|
|
/*
|
|
* Invalidate any cached meta-data.
|
|
*/
|
|
void (*bdrv_invalidate_cache)(BlockDriverState *bs);
|
|
|
|
/*
|
|
* Flushes all data that was already written to the OS all the way down to
|
|
* the disk (for example raw-posix calls fsync()).
|
|
*/
|
|
int coroutine_fn (*bdrv_co_flush_to_disk)(BlockDriverState *bs);
|
|
|
|
/*
|
|
* Flushes all internal caches to the OS. The data may still sit in a
|
|
* writeback cache of the host OS, but it will survive a crash of the qemu
|
|
* process.
|
|
*/
|
|
int coroutine_fn (*bdrv_co_flush_to_os)(BlockDriverState *bs);
|
|
|
|
const char *protocol_name;
|
|
int (*bdrv_truncate)(BlockDriverState *bs, int64_t offset);
|
|
|
|
int64_t (*bdrv_getlength)(BlockDriverState *bs);
|
|
bool has_variable_length;
|
|
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_create)(BlockDriverState *bs,
|
|
QEMUSnapshotInfo *sn_info);
|
|
int (*bdrv_snapshot_goto)(BlockDriverState *bs,
|
|
const char *snapshot_id);
|
|
int (*bdrv_snapshot_delete)(BlockDriverState *bs,
|
|
const char *snapshot_id,
|
|
const char *name,
|
|
Error **errp);
|
|
int (*bdrv_snapshot_list)(BlockDriverState *bs,
|
|
QEMUSnapshotInfo **psn_info);
|
|
int (*bdrv_snapshot_load_tmp)(BlockDriverState *bs,
|
|
const char *snapshot_id,
|
|
const char *name,
|
|
Error **errp);
|
|
int (*bdrv_get_info)(BlockDriverState *bs, BlockDriverInfo *bdi);
|
|
ImageInfoSpecific *(*bdrv_get_specific_info)(BlockDriverState *bs);
|
|
|
|
int (*bdrv_save_vmstate)(BlockDriverState *bs, QEMUIOVector *qiov,
|
|
int64_t pos);
|
|
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);
|
|
void (*bdrv_eject)(BlockDriverState *bs, bool eject_flag);
|
|
void (*bdrv_lock_medium)(BlockDriverState *bs, bool locked);
|
|
|
|
/* to control generic scsi devices */
|
|
int (*bdrv_ioctl)(BlockDriverState *bs, unsigned long int req, void *buf);
|
|
BlockDriverAIOCB *(*bdrv_aio_ioctl)(BlockDriverState *bs,
|
|
unsigned long int req, void *buf,
|
|
BlockDriverCompletionFunc *cb, void *opaque);
|
|
|
|
/* 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,
|
|
BdrvCheckMode fix);
|
|
|
|
int (*bdrv_amend_options)(BlockDriverState *bs,
|
|
QEMUOptionParameter *options);
|
|
|
|
void (*bdrv_debug_event)(BlockDriverState *bs, BlkDebugEvent event);
|
|
|
|
/* TODO Better pass a option string/QDict/QemuOpts to add any rule? */
|
|
int (*bdrv_debug_breakpoint)(BlockDriverState *bs, const char *event,
|
|
const char *tag);
|
|
int (*bdrv_debug_remove_breakpoint)(BlockDriverState *bs,
|
|
const char *tag);
|
|
int (*bdrv_debug_resume)(BlockDriverState *bs, const char *tag);
|
|
bool (*bdrv_debug_is_suspended)(BlockDriverState *bs, const char *tag);
|
|
|
|
int (*bdrv_refresh_limits)(BlockDriverState *bs);
|
|
|
|
/*
|
|
* 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;
|
|
};
|
|
|
|
typedef struct BlockLimits {
|
|
/* maximum number of sectors that can be discarded at once */
|
|
int max_discard;
|
|
|
|
/* optimal alignment for discard requests in sectors */
|
|
int64_t discard_alignment;
|
|
|
|
/* maximum number of sectors that can zeroized at once */
|
|
int max_write_zeroes;
|
|
|
|
/* optimal alignment for write zeroes requests in sectors */
|
|
int64_t write_zeroes_alignment;
|
|
|
|
/* optimal transfer length in sectors */
|
|
int opt_transfer_length;
|
|
|
|
/* memory alignment so that no bounce buffer is needed */
|
|
size_t opt_mem_alignment;
|
|
} BlockLimits;
|
|
|
|
/*
|
|
* 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 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 */
|
|
int sg; /* if true, the device is a /dev/sg* */
|
|
int copy_on_read; /* if true, copy read backing sectors into image
|
|
note this is a reference count */
|
|
|
|
BlockDriver *drv; /* NULL means no media */
|
|
void *opaque;
|
|
|
|
void *dev; /* attached device model, if any */
|
|
/* TODO change to DeviceState when all users are qdevified */
|
|
const BlockDevOps *dev_ops;
|
|
void *dev_opaque;
|
|
|
|
char filename[1024];
|
|
char backing_file[1024]; /* if non zero, the image is a diff of
|
|
this file image */
|
|
char backing_format[16]; /* if non-zero and backing_file exists */
|
|
int is_temporary;
|
|
|
|
BlockDriverState *backing_hd;
|
|
BlockDriverState *file;
|
|
|
|
NotifierList close_notifiers;
|
|
|
|
/* Callback before write request is processed */
|
|
NotifierWithReturnList before_write_notifiers;
|
|
|
|
/* number of in-flight serialising requests */
|
|
unsigned int serialising_in_flight;
|
|
|
|
/* I/O throttling */
|
|
ThrottleState throttle_state;
|
|
CoQueue throttled_reqs[2];
|
|
bool io_limits_enabled;
|
|
|
|
/* I/O stats (display with "info blockstats"). */
|
|
uint64_t nr_bytes[BDRV_MAX_IOTYPE];
|
|
uint64_t nr_ops[BDRV_MAX_IOTYPE];
|
|
uint64_t total_time_ns[BDRV_MAX_IOTYPE];
|
|
uint64_t wr_highest_sector;
|
|
|
|
/* I/O Limits */
|
|
BlockLimits bl;
|
|
|
|
/* Whether the disk can expand beyond total_sectors */
|
|
int growable;
|
|
|
|
/* Whether produces zeros when read beyond eof */
|
|
bool zero_beyond_eof;
|
|
|
|
/* Alignment requirement for offset/length of I/O requests */
|
|
unsigned int request_alignment;
|
|
|
|
/* the block size for which the guest device expects atomicity */
|
|
int guest_block_size;
|
|
|
|
/* 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 */
|
|
BlockdevOnError on_read_error, on_write_error;
|
|
bool iostatus_enabled;
|
|
BlockDeviceIoStatus iostatus;
|
|
|
|
/* the following member gives a name to every node on the bs graph. */
|
|
char node_name[32];
|
|
/* element of the list of named nodes building the graph */
|
|
QTAILQ_ENTRY(BlockDriverState) node_list;
|
|
/* Device name is the name associated with the "drive" the guest sees */
|
|
char device_name[32];
|
|
/* element of the list of "drives" the guest sees */
|
|
QTAILQ_ENTRY(BlockDriverState) device_list;
|
|
QLIST_HEAD(, BdrvDirtyBitmap) dirty_bitmaps;
|
|
int refcnt;
|
|
int in_use; /* users other than guest access, eg. block migration */
|
|
|
|
QLIST_HEAD(, BdrvTrackedRequest) tracked_requests;
|
|
|
|
/* long-running background operation */
|
|
BlockJob *job;
|
|
|
|
QDict *options;
|
|
};
|
|
|
|
int get_tmp_filename(char *filename, int size);
|
|
|
|
void bdrv_set_io_limits(BlockDriverState *bs,
|
|
ThrottleConfig *cfg);
|
|
|
|
|
|
/**
|
|
* bdrv_add_before_write_notifier:
|
|
*
|
|
* Register a callback that is invoked before write requests are processed but
|
|
* after any throttling or waiting for overlapping requests.
|
|
*/
|
|
void bdrv_add_before_write_notifier(BlockDriverState *bs,
|
|
NotifierWithReturn *notifier);
|
|
|
|
/**
|
|
* bdrv_get_aio_context:
|
|
*
|
|
* Returns: the currently bound #AioContext
|
|
*/
|
|
AioContext *bdrv_get_aio_context(BlockDriverState *bs);
|
|
|
|
#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);
|
|
|
|
/**
|
|
* 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);
|
|
|
|
/**
|
|
* commit_start:
|
|
* @bs: Active block device.
|
|
* @top: Top block device to be committed.
|
|
* @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);
|
|
/**
|
|
* commit_active_start:
|
|
* @bs: Active block device to be committed.
|
|
* @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_active_start(BlockDriverState *bs, BlockDriverState *base,
|
|
int64_t speed,
|
|
BlockdevOnError on_error,
|
|
BlockDriverCompletionFunc *cb,
|
|
void *opaque, Error **errp);
|
|
/*
|
|
* mirror_start:
|
|
* @bs: Block device to operate on.
|
|
* @target: Block device to write to.
|
|
* @speed: The maximum speed, in bytes per second, or 0 for unlimited.
|
|
* @granularity: The chosen granularity for the dirty bitmap.
|
|
* @buf_size: The amount of data that can be in flight at one time.
|
|
* @mode: Whether to collapse all images in the chain to the target.
|
|
* @on_source_error: The action to take upon error reading from the source.
|
|
* @on_target_error: The action to take upon error writing to the target.
|
|
* @cb: Completion function for the job.
|
|
* @opaque: Opaque pointer value passed to @cb.
|
|
* @errp: Error object.
|
|
*
|
|
* Start a mirroring operation on @bs. Clusters that are allocated
|
|
* in @bs will be written to @bs until the job is cancelled or
|
|
* manually completed. At the end of a successful mirroring job,
|
|
* @bs will be switched to read from @target.
|
|
*/
|
|
void mirror_start(BlockDriverState *bs, BlockDriverState *target,
|
|
int64_t speed, int64_t granularity, int64_t buf_size,
|
|
MirrorSyncMode mode, BlockdevOnError on_source_error,
|
|
BlockdevOnError on_target_error,
|
|
BlockDriverCompletionFunc *cb,
|
|
void *opaque, Error **errp);
|
|
|
|
/*
|
|
* backup_start:
|
|
* @bs: Block device to operate on.
|
|
* @target: Block device to write to.
|
|
* @speed: The maximum speed, in bytes per second, or 0 for unlimited.
|
|
* @sync_mode: What parts of the disk image should be copied to the destination.
|
|
* @on_source_error: The action to take upon error reading from the source.
|
|
* @on_target_error: The action to take upon error writing to the target.
|
|
* @cb: Completion function for the job.
|
|
* @opaque: Opaque pointer value passed to @cb.
|
|
*
|
|
* Start a backup operation on @bs. Clusters in @bs are written to @target
|
|
* until the job is cancelled or manually completed.
|
|
*/
|
|
void backup_start(BlockDriverState *bs, BlockDriverState *target,
|
|
int64_t speed, MirrorSyncMode sync_mode,
|
|
BlockdevOnError on_source_error,
|
|
BlockdevOnError on_target_error,
|
|
BlockDriverCompletionFunc *cb, void *opaque,
|
|
Error **errp);
|
|
|
|
#endif /* BLOCK_INT_H */
|