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-rw-r--r--qemu/include/block/block.h544
1 files changed, 0 insertions, 544 deletions
diff --git a/qemu/include/block/block.h b/qemu/include/block/block.h
deleted file mode 100644
index 3a731377d..000000000
--- a/qemu/include/block/block.h
+++ /dev/null
@@ -1,544 +0,0 @@
-#ifndef BLOCK_H
-#define BLOCK_H
-
-#include "block/aio.h"
-#include "qemu/iov.h"
-#include "qemu/option.h"
-#include "qemu/coroutine.h"
-#include "block/accounting.h"
-#include "block/dirty-bitmap.h"
-#include "qapi/qmp/qobject.h"
-#include "qapi-types.h"
-#include "qemu/hbitmap.h"
-
-/* block.c */
-typedef struct BlockDriver BlockDriver;
-typedef struct BlockJob BlockJob;
-typedef struct BdrvChild BdrvChild;
-typedef struct BdrvChildRole BdrvChildRole;
-typedef struct BlockJobTxn BlockJobTxn;
-
-typedef struct BlockDriverInfo {
- /* in bytes, 0 if irrelevant */
- int cluster_size;
- /* offset at which the VM state can be saved (0 if not possible) */
- int64_t vm_state_offset;
- bool is_dirty;
- /*
- * True if unallocated blocks read back as zeroes. This is equivalent
- * to the LBPRZ flag in the SCSI logical block provisioning page.
- */
- bool unallocated_blocks_are_zero;
- /*
- * True if the driver can optimize writing zeroes by unmapping
- * sectors. This is equivalent to the BLKDISCARDZEROES ioctl in Linux
- * with the difference that in qemu a discard is allowed to silently
- * fail. Therefore we have to use bdrv_write_zeroes with the
- * BDRV_REQ_MAY_UNMAP flag for an optimized zero write with unmapping.
- * After this call the driver has to guarantee that the contents read
- * back as zero. It is additionally required that the block device is
- * opened with BDRV_O_UNMAP flag for this to work.
- */
- bool can_write_zeroes_with_unmap;
- /*
- * True if this block driver only supports compressed writes
- */
- bool needs_compressed_writes;
-} BlockDriverInfo;
-
-typedef struct BlockFragInfo {
- uint64_t allocated_clusters;
- uint64_t total_clusters;
- uint64_t fragmented_clusters;
- uint64_t compressed_clusters;
-} BlockFragInfo;
-
-typedef enum {
- BDRV_REQ_COPY_ON_READ = 0x1,
- BDRV_REQ_ZERO_WRITE = 0x2,
- /* The BDRV_REQ_MAY_UNMAP flag is used to indicate that the block driver
- * is allowed to optimize a write zeroes request by unmapping (discarding)
- * blocks if it is guaranteed that the result will read back as
- * zeroes. The flag is only passed to the driver if the block device is
- * opened with BDRV_O_UNMAP.
- */
- BDRV_REQ_MAY_UNMAP = 0x4,
- BDRV_REQ_NO_SERIALISING = 0x8,
- BDRV_REQ_FUA = 0x10,
-} BdrvRequestFlags;
-
-typedef struct BlockSizes {
- uint32_t phys;
- uint32_t log;
-} BlockSizes;
-
-typedef struct HDGeometry {
- uint32_t heads;
- uint32_t sectors;
- uint32_t cylinders;
-} HDGeometry;
-
-#define BDRV_O_RDWR 0x0002
-#define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */
-#define BDRV_O_TEMPORARY 0x0010 /* delete the file after use */
-#define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */
-#define BDRV_O_NATIVE_AIO 0x0080 /* use native AIO instead of the thread pool */
-#define BDRV_O_NO_BACKING 0x0100 /* don't open the backing file */
-#define BDRV_O_NO_FLUSH 0x0200 /* disable flushing on this disk */
-#define BDRV_O_COPY_ON_READ 0x0400 /* copy read backing sectors into image */
-#define BDRV_O_INACTIVE 0x0800 /* consistency hint for migration handoff */
-#define BDRV_O_CHECK 0x1000 /* open solely for consistency check */
-#define BDRV_O_ALLOW_RDWR 0x2000 /* allow reopen to change from r/o to r/w */
-#define BDRV_O_UNMAP 0x4000 /* execute guest UNMAP/TRIM operations */
-#define BDRV_O_PROTOCOL 0x8000 /* if no block driver is explicitly given:
- select an appropriate protocol driver,
- ignoring the format layer */
-#define BDRV_O_NO_IO 0x10000 /* don't initialize for I/O */
-
-#define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE | BDRV_O_NO_FLUSH)
-
-
-/* Option names of options parsed by the block layer */
-
-#define BDRV_OPT_CACHE_WB "cache.writeback"
-#define BDRV_OPT_CACHE_DIRECT "cache.direct"
-#define BDRV_OPT_CACHE_NO_FLUSH "cache.no-flush"
-
-
-#define BDRV_SECTOR_BITS 9
-#define BDRV_SECTOR_SIZE (1ULL << BDRV_SECTOR_BITS)
-#define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1)
-
-#define BDRV_REQUEST_MAX_SECTORS MIN(SIZE_MAX >> BDRV_SECTOR_BITS, \
- INT_MAX >> BDRV_SECTOR_BITS)
-
-/*
- * Allocation status flags
- * BDRV_BLOCK_DATA: data is read from a file returned by bdrv_get_block_status.
- * BDRV_BLOCK_ZERO: sectors read as zero
- * BDRV_BLOCK_OFFSET_VALID: sector stored as raw data in a file returned by
- * bdrv_get_block_status.
- * BDRV_BLOCK_ALLOCATED: the content of the block is determined by this
- * layer (as opposed to the backing file)
- * BDRV_BLOCK_RAW: used internally to indicate that the request
- * was answered by the raw driver and that one
- * should look in bs->file directly.
- *
- * If BDRV_BLOCK_OFFSET_VALID is set, bits 9-62 represent the offset in
- * bs->file where sector data can be read from as raw data.
- *
- * DATA == 0 && ZERO == 0 means that data is read from backing_hd if present.
- *
- * DATA ZERO OFFSET_VALID
- * t t t sectors read as zero, bs->file is zero at offset
- * t f t sectors read as valid from bs->file at offset
- * f t t sectors preallocated, read as zero, bs->file not
- * necessarily zero at offset
- * f f t sectors preallocated but read from backing_hd,
- * bs->file contains garbage at offset
- * t t f sectors preallocated, read as zero, unknown offset
- * t f f sectors read from unknown file or offset
- * f t f not allocated or unknown offset, read as zero
- * f f f not allocated or unknown offset, read from backing_hd
- */
-#define BDRV_BLOCK_DATA 0x01
-#define BDRV_BLOCK_ZERO 0x02
-#define BDRV_BLOCK_OFFSET_VALID 0x04
-#define BDRV_BLOCK_RAW 0x08
-#define BDRV_BLOCK_ALLOCATED 0x10
-#define BDRV_BLOCK_OFFSET_MASK BDRV_SECTOR_MASK
-
-typedef QSIMPLEQ_HEAD(BlockReopenQueue, BlockReopenQueueEntry) BlockReopenQueue;
-
-typedef struct BDRVReopenState {
- BlockDriverState *bs;
- int flags;
- QDict *options;
- QDict *explicit_options;
- void *opaque;
-} BDRVReopenState;
-
-/*
- * Block operation types
- */
-typedef enum BlockOpType {
- BLOCK_OP_TYPE_BACKUP_SOURCE,
- BLOCK_OP_TYPE_BACKUP_TARGET,
- BLOCK_OP_TYPE_CHANGE,
- BLOCK_OP_TYPE_COMMIT_SOURCE,
- BLOCK_OP_TYPE_COMMIT_TARGET,
- BLOCK_OP_TYPE_DATAPLANE,
- BLOCK_OP_TYPE_DRIVE_DEL,
- BLOCK_OP_TYPE_EJECT,
- BLOCK_OP_TYPE_EXTERNAL_SNAPSHOT,
- BLOCK_OP_TYPE_INTERNAL_SNAPSHOT,
- BLOCK_OP_TYPE_INTERNAL_SNAPSHOT_DELETE,
- BLOCK_OP_TYPE_MIRROR_SOURCE,
- BLOCK_OP_TYPE_MIRROR_TARGET,
- BLOCK_OP_TYPE_RESIZE,
- BLOCK_OP_TYPE_STREAM,
- BLOCK_OP_TYPE_REPLACE,
- BLOCK_OP_TYPE_MAX,
-} BlockOpType;
-
-void bdrv_info_print(Monitor *mon, const QObject *data);
-void bdrv_info(Monitor *mon, QObject **ret_data);
-void bdrv_stats_print(Monitor *mon, const QObject *data);
-void bdrv_info_stats(Monitor *mon, QObject **ret_data);
-
-/* disk I/O throttling */
-void bdrv_io_limits_enable(BlockDriverState *bs, const char *group);
-void bdrv_io_limits_disable(BlockDriverState *bs);
-void bdrv_io_limits_update_group(BlockDriverState *bs, const char *group);
-
-void bdrv_init(void);
-void bdrv_init_with_whitelist(void);
-bool bdrv_uses_whitelist(void);
-BlockDriver *bdrv_find_protocol(const char *filename,
- bool allow_protocol_prefix,
- Error **errp);
-BlockDriver *bdrv_find_format(const char *format_name);
-int bdrv_create(BlockDriver *drv, const char* filename,
- QemuOpts *opts, Error **errp);
-int bdrv_create_file(const char *filename, QemuOpts *opts, Error **errp);
-BlockDriverState *bdrv_new_root(void);
-BlockDriverState *bdrv_new(void);
-void bdrv_append(BlockDriverState *bs_new, BlockDriverState *bs_top);
-void bdrv_replace_in_backing_chain(BlockDriverState *old,
- BlockDriverState *new);
-
-int bdrv_parse_cache_mode(const char *mode, int *flags, bool *writethrough);
-int bdrv_parse_discard_flags(const char *mode, int *flags);
-BdrvChild *bdrv_open_child(const char *filename,
- QDict *options, const char *bdref_key,
- BlockDriverState* parent,
- const BdrvChildRole *child_role,
- bool allow_none, Error **errp);
-void bdrv_set_backing_hd(BlockDriverState *bs, BlockDriverState *backing_hd);
-int bdrv_open_backing_file(BlockDriverState *bs, QDict *parent_options,
- const char *bdref_key, Error **errp);
-int bdrv_open(BlockDriverState **pbs, const char *filename,
- const char *reference, QDict *options, int flags, Error **errp);
-BlockReopenQueue *bdrv_reopen_queue(BlockReopenQueue *bs_queue,
- BlockDriverState *bs,
- QDict *options, int flags);
-int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp);
-int bdrv_reopen(BlockDriverState *bs, int bdrv_flags, Error **errp);
-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_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);
-int bdrv_write_zeroes(BlockDriverState *bs, int64_t sector_num,
- int nb_sectors, BdrvRequestFlags flags);
-BlockAIOCB *bdrv_aio_write_zeroes(BlockDriverState *bs, int64_t sector_num,
- int nb_sectors, BdrvRequestFlags flags,
- BlockCompletionFunc *cb, void *opaque);
-int bdrv_make_zero(BlockDriverState *bs, BdrvRequestFlags flags);
-int bdrv_pread(BlockDriverState *bs, int64_t offset,
- void *buf, int count);
-int bdrv_pwrite(BlockDriverState *bs, int64_t offset,
- const void *buf, int count);
-int bdrv_pwritev(BlockDriverState *bs, int64_t offset, QEMUIOVector *qiov);
-int bdrv_pwrite_sync(BlockDriverState *bs, int64_t offset,
- const void *buf, int count);
-int coroutine_fn bdrv_co_readv(BlockDriverState *bs, int64_t sector_num,
- int nb_sectors, QEMUIOVector *qiov);
-int coroutine_fn bdrv_co_copy_on_readv(BlockDriverState *bs,
- int64_t sector_num, int nb_sectors, QEMUIOVector *qiov);
-int coroutine_fn bdrv_co_readv_no_serialising(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. Note that this is a regular
- * I/O request like read or write and should have a reasonable size. This
- * function is not suitable for zeroing the entire image in a single request
- * because it may allocate memory for the entire region.
- */
-int coroutine_fn bdrv_co_write_zeroes(BlockDriverState *bs, int64_t sector_num,
- int nb_sectors, BdrvRequestFlags flags);
-BlockDriverState *bdrv_find_backing_image(BlockDriverState *bs,
- const char *backing_file);
-int bdrv_get_backing_file_depth(BlockDriverState *bs);
-void bdrv_refresh_filename(BlockDriverState *bs);
-int bdrv_truncate(BlockDriverState *bs, int64_t offset);
-int64_t bdrv_nb_sectors(BlockDriverState *bs);
-int64_t bdrv_getlength(BlockDriverState *bs);
-int64_t bdrv_get_allocated_file_size(BlockDriverState *bs);
-void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr);
-void bdrv_refresh_limits(BlockDriverState *bs, Error **errp);
-int bdrv_commit(BlockDriverState *bs);
-int bdrv_change_backing_file(BlockDriverState *bs,
- const char *backing_file, const char *backing_fmt);
-void bdrv_register(BlockDriver *bdrv);
-int bdrv_drop_intermediate(BlockDriverState *active, BlockDriverState *top,
- BlockDriverState *base,
- const char *backing_file_str);
-BlockDriverState *bdrv_find_overlay(BlockDriverState *active,
- BlockDriverState *bs);
-BlockDriverState *bdrv_find_base(BlockDriverState *bs);
-
-
-typedef struct BdrvCheckResult {
- int corruptions;
- int leaks;
- int check_errors;
- int corruptions_fixed;
- int leaks_fixed;
- int64_t image_end_offset;
- BlockFragInfo bfi;
-} BdrvCheckResult;
-
-typedef enum {
- BDRV_FIX_LEAKS = 1,
- BDRV_FIX_ERRORS = 2,
-} BdrvCheckMode;
-
-int bdrv_check(BlockDriverState *bs, BdrvCheckResult *res, BdrvCheckMode fix);
-
-/* The units of offset and total_work_size may be chosen arbitrarily by the
- * block driver; total_work_size may change during the course of the amendment
- * operation */
-typedef void BlockDriverAmendStatusCB(BlockDriverState *bs, int64_t offset,
- int64_t total_work_size, void *opaque);
-int bdrv_amend_options(BlockDriverState *bs_new, QemuOpts *opts,
- BlockDriverAmendStatusCB *status_cb, void *cb_opaque);
-
-/* external snapshots */
-bool bdrv_recurse_is_first_non_filter(BlockDriverState *bs,
- BlockDriverState *candidate);
-bool bdrv_is_first_non_filter(BlockDriverState *candidate);
-
-/* check if a named node can be replaced when doing drive-mirror */
-BlockDriverState *check_to_replace_node(BlockDriverState *parent_bs,
- const char *node_name, Error **errp);
-
-/* async block I/O */
-BlockAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num,
- QEMUIOVector *iov, int nb_sectors,
- BlockCompletionFunc *cb, void *opaque);
-BlockAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num,
- QEMUIOVector *iov, int nb_sectors,
- BlockCompletionFunc *cb, void *opaque);
-BlockAIOCB *bdrv_aio_flush(BlockDriverState *bs,
- BlockCompletionFunc *cb, void *opaque);
-BlockAIOCB *bdrv_aio_discard(BlockDriverState *bs,
- int64_t sector_num, int nb_sectors,
- BlockCompletionFunc *cb, void *opaque);
-void bdrv_aio_cancel(BlockAIOCB *acb);
-void bdrv_aio_cancel_async(BlockAIOCB *acb);
-
-typedef struct BlockRequest {
- /* Fields to be filled by multiwrite caller */
- union {
- struct {
- int64_t sector;
- int nb_sectors;
- int flags;
- QEMUIOVector *qiov;
- };
- struct {
- int req;
- void *buf;
- };
- };
- BlockCompletionFunc *cb;
- void *opaque;
-
- /* Filled by multiwrite implementation */
- int error;
-} BlockRequest;
-
-int bdrv_aio_multiwrite(BlockDriverState *bs, BlockRequest *reqs,
- int num_reqs);
-
-/* sg packet commands */
-int bdrv_ioctl(BlockDriverState *bs, unsigned long int req, void *buf);
-BlockAIOCB *bdrv_aio_ioctl(BlockDriverState *bs,
- unsigned long int req, void *buf,
- BlockCompletionFunc *cb, void *opaque);
-
-/* Invalidate any cached metadata used by image formats */
-void bdrv_invalidate_cache(BlockDriverState *bs, Error **errp);
-void bdrv_invalidate_cache_all(Error **errp);
-int bdrv_inactivate_all(void);
-
-/* Ensure contents are flushed to disk. */
-int bdrv_flush(BlockDriverState *bs);
-int coroutine_fn bdrv_co_flush(BlockDriverState *bs);
-void bdrv_close_all(void);
-void bdrv_drain(BlockDriverState *bs);
-void coroutine_fn bdrv_co_drain(BlockDriverState *bs);
-void bdrv_drain_all(void);
-
-int bdrv_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors);
-int bdrv_co_discard(BlockDriverState *bs, int64_t sector_num, int nb_sectors);
-int bdrv_has_zero_init_1(BlockDriverState *bs);
-int bdrv_has_zero_init(BlockDriverState *bs);
-bool bdrv_unallocated_blocks_are_zero(BlockDriverState *bs);
-bool bdrv_can_write_zeroes_with_unmap(BlockDriverState *bs);
-int64_t bdrv_get_block_status(BlockDriverState *bs, int64_t sector_num,
- int nb_sectors, int *pnum,
- BlockDriverState **file);
-int64_t bdrv_get_block_status_above(BlockDriverState *bs,
- BlockDriverState *base,
- int64_t sector_num,
- int nb_sectors, int *pnum,
- BlockDriverState **file);
-int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
- int *pnum);
-int bdrv_is_allocated_above(BlockDriverState *top, BlockDriverState *base,
- int64_t sector_num, int nb_sectors, int *pnum);
-
-int bdrv_is_read_only(BlockDriverState *bs);
-int bdrv_is_sg(BlockDriverState *bs);
-bool bdrv_is_inserted(BlockDriverState *bs);
-int bdrv_media_changed(BlockDriverState *bs);
-void bdrv_lock_medium(BlockDriverState *bs, bool locked);
-void bdrv_eject(BlockDriverState *bs, bool eject_flag);
-const char *bdrv_get_format_name(BlockDriverState *bs);
-BlockDriverState *bdrv_find_node(const char *node_name);
-BlockDeviceInfoList *bdrv_named_nodes_list(Error **errp);
-BlockDriverState *bdrv_lookup_bs(const char *device,
- const char *node_name,
- Error **errp);
-bool bdrv_chain_contains(BlockDriverState *top, BlockDriverState *base);
-BlockDriverState *bdrv_next_node(BlockDriverState *bs);
-BlockDriverState *bdrv_next(BlockDriverState *bs);
-BlockDriverState *bdrv_next_monitor_owned(BlockDriverState *bs);
-int bdrv_is_encrypted(BlockDriverState *bs);
-int bdrv_key_required(BlockDriverState *bs);
-int bdrv_set_key(BlockDriverState *bs, const char *key);
-void bdrv_add_key(BlockDriverState *bs, const char *key, Error **errp);
-int bdrv_query_missing_keys(void);
-void bdrv_iterate_format(void (*it)(void *opaque, const char *name),
- void *opaque);
-const char *bdrv_get_node_name(const BlockDriverState *bs);
-const char *bdrv_get_device_name(const BlockDriverState *bs);
-const char *bdrv_get_device_or_node_name(const BlockDriverState *bs);
-int bdrv_get_flags(BlockDriverState *bs);
-int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
- const uint8_t *buf, int nb_sectors);
-int bdrv_get_info(BlockDriverState *bs, BlockDriverInfo *bdi);
-ImageInfoSpecific *bdrv_get_specific_info(BlockDriverState *bs);
-void bdrv_round_to_clusters(BlockDriverState *bs,
- int64_t sector_num, int nb_sectors,
- int64_t *cluster_sector_num,
- int *cluster_nb_sectors);
-
-const char *bdrv_get_encrypted_filename(BlockDriverState *bs);
-void bdrv_get_backing_filename(BlockDriverState *bs,
- char *filename, int filename_size);
-void bdrv_get_full_backing_filename(BlockDriverState *bs,
- char *dest, size_t sz, Error **errp);
-void bdrv_get_full_backing_filename_from_filename(const char *backed,
- const char *backing,
- char *dest, size_t sz,
- Error **errp);
-int bdrv_is_snapshot(BlockDriverState *bs);
-
-int path_has_protocol(const char *path);
-int path_is_absolute(const char *path);
-void path_combine(char *dest, int dest_size,
- const char *base_path,
- const char *filename);
-
-int bdrv_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos);
-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);
-
-void 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,
- Error **errp, bool quiet);
-
-/* Returns the alignment in bytes that is required so that no bounce buffer
- * is required throughout the stack */
-size_t bdrv_min_mem_align(BlockDriverState *bs);
-/* Returns optimal alignment in bytes for bounce buffer */
-size_t bdrv_opt_mem_align(BlockDriverState *bs);
-void *qemu_blockalign(BlockDriverState *bs, size_t size);
-void *qemu_blockalign0(BlockDriverState *bs, size_t size);
-void *qemu_try_blockalign(BlockDriverState *bs, size_t size);
-void *qemu_try_blockalign0(BlockDriverState *bs, size_t size);
-bool bdrv_qiov_is_aligned(BlockDriverState *bs, QEMUIOVector *qiov);
-
-void bdrv_enable_copy_on_read(BlockDriverState *bs);
-void bdrv_disable_copy_on_read(BlockDriverState *bs);
-
-void bdrv_ref(BlockDriverState *bs);
-void bdrv_unref(BlockDriverState *bs);
-void bdrv_unref_child(BlockDriverState *parent, BdrvChild *child);
-
-bool bdrv_op_is_blocked(BlockDriverState *bs, BlockOpType op, Error **errp);
-void bdrv_op_block(BlockDriverState *bs, BlockOpType op, Error *reason);
-void bdrv_op_unblock(BlockDriverState *bs, BlockOpType op, Error *reason);
-void bdrv_op_block_all(BlockDriverState *bs, Error *reason);
-void bdrv_op_unblock_all(BlockDriverState *bs, Error *reason);
-bool bdrv_op_blocker_is_empty(BlockDriverState *bs);
-
-#define BLKDBG_EVENT(child, evt) \
- do { \
- if (child) { \
- bdrv_debug_event(child->bs, evt); \
- } \
- } while (0)
-
-void bdrv_debug_event(BlockDriverState *bs, BlkdebugEvent event);
-
-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);
-
-/**
- * bdrv_get_aio_context:
- *
- * Returns: the currently bound #AioContext
- */
-AioContext *bdrv_get_aio_context(BlockDriverState *bs);
-
-/**
- * bdrv_set_aio_context:
- *
- * Changes the #AioContext used for fd handlers, timers, and BHs by this
- * BlockDriverState and all its children.
- *
- * This function must be called with iothread lock held.
- */
-void bdrv_set_aio_context(BlockDriverState *bs, AioContext *new_context);
-int bdrv_probe_blocksizes(BlockDriverState *bs, BlockSizes *bsz);
-int bdrv_probe_geometry(BlockDriverState *bs, HDGeometry *geo);
-
-void bdrv_io_plug(BlockDriverState *bs);
-void bdrv_io_unplug(BlockDriverState *bs);
-void bdrv_flush_io_queue(BlockDriverState *bs);
-
-/**
- * bdrv_drained_begin:
- *
- * Begin a quiesced section for exclusive access to the BDS, by disabling
- * external request sources including NBD server and device model. Note that
- * this doesn't block timers or coroutines from submitting more requests, which
- * means block_job_pause is still necessary.
- *
- * This function can be recursive.
- */
-void bdrv_drained_begin(BlockDriverState *bs);
-
-/**
- * bdrv_drained_end:
- *
- * End a quiescent section started by bdrv_drained_begin().
- */
-void bdrv_drained_end(BlockDriverState *bs);
-
-#endif