block.h (6f7a3b535f0d48d138e43cadf13323f083bfb547) block.h (bd86fb990cfedc50d9705b8ed31d183f01942035)
1#ifndef BLOCK_H
2#define BLOCK_H
3
4#include "block/aio.h"
5#include "block/aio-wait.h"
6#include "qemu/iov.h"
7#include "qemu/coroutine.h"
8#include "block/accounting.h"
9#include "block/dirty-bitmap.h"
10#include "block/blockjob.h"
11#include "qemu/hbitmap.h"
12
13/* block.c */
14typedef struct BlockDriver BlockDriver;
15typedef struct BdrvChild BdrvChild;
1#ifndef BLOCK_H
2#define BLOCK_H
3
4#include "block/aio.h"
5#include "block/aio-wait.h"
6#include "qemu/iov.h"
7#include "qemu/coroutine.h"
8#include "block/accounting.h"
9#include "block/dirty-bitmap.h"
10#include "block/blockjob.h"
11#include "qemu/hbitmap.h"
12
13/* block.c */
14typedef struct BlockDriver BlockDriver;
15typedef struct BdrvChild BdrvChild;
16typedef struct BdrvChildRole BdrvChildRole;
16typedef struct BdrvChildClass BdrvChildClass;
17
18typedef struct BlockDriverInfo {
19 /* in bytes, 0 if irrelevant */
20 int cluster_size;
21 /* offset at which the VM state can be saved (0 if not possible) */
22 int64_t vm_state_offset;
23 bool is_dirty;
24 /*

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291 Error **errp);
292
293int bdrv_parse_aio(const char *mode, int *flags);
294int bdrv_parse_cache_mode(const char *mode, int *flags, bool *writethrough);
295int bdrv_parse_discard_flags(const char *mode, int *flags);
296BdrvChild *bdrv_open_child(const char *filename,
297 QDict *options, const char *bdref_key,
298 BlockDriverState* parent,
17
18typedef struct BlockDriverInfo {
19 /* in bytes, 0 if irrelevant */
20 int cluster_size;
21 /* offset at which the VM state can be saved (0 if not possible) */
22 int64_t vm_state_offset;
23 bool is_dirty;
24 /*

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291 Error **errp);
292
293int bdrv_parse_aio(const char *mode, int *flags);
294int bdrv_parse_cache_mode(const char *mode, int *flags, bool *writethrough);
295int bdrv_parse_discard_flags(const char *mode, int *flags);
296BdrvChild *bdrv_open_child(const char *filename,
297 QDict *options, const char *bdref_key,
298 BlockDriverState* parent,
299 const BdrvChildRole *child_role,
299 const BdrvChildClass *child_class,
300 bool allow_none, Error **errp);
301BlockDriverState *bdrv_open_blockdev_ref(BlockdevRef *ref, Error **errp);
302void bdrv_set_backing_hd(BlockDriverState *bs, BlockDriverState *backing_hd,
303 Error **errp);
304int bdrv_open_backing_file(BlockDriverState *bs, QDict *parent_options,
305 const char *bdref_key, Error **errp);
306BlockDriverState *bdrv_open(const char *filename, const char *reference,
307 QDict *options, int flags, Error **errp);

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536void bdrv_disable_copy_on_read(BlockDriverState *bs);
537
538void bdrv_ref(BlockDriverState *bs);
539void bdrv_unref(BlockDriverState *bs);
540void bdrv_unref_child(BlockDriverState *parent, BdrvChild *child);
541BdrvChild *bdrv_attach_child(BlockDriverState *parent_bs,
542 BlockDriverState *child_bs,
543 const char *child_name,
300 bool allow_none, Error **errp);
301BlockDriverState *bdrv_open_blockdev_ref(BlockdevRef *ref, Error **errp);
302void bdrv_set_backing_hd(BlockDriverState *bs, BlockDriverState *backing_hd,
303 Error **errp);
304int bdrv_open_backing_file(BlockDriverState *bs, QDict *parent_options,
305 const char *bdref_key, Error **errp);
306BlockDriverState *bdrv_open(const char *filename, const char *reference,
307 QDict *options, int flags, Error **errp);

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536void bdrv_disable_copy_on_read(BlockDriverState *bs);
537
538void bdrv_ref(BlockDriverState *bs);
539void bdrv_unref(BlockDriverState *bs);
540void bdrv_unref_child(BlockDriverState *parent, BdrvChild *child);
541BdrvChild *bdrv_attach_child(BlockDriverState *parent_bs,
542 BlockDriverState *child_bs,
543 const char *child_name,
544 const BdrvChildRole *child_role,
544 const BdrvChildClass *child_class,
545 Error **errp);
546
547bool bdrv_op_is_blocked(BlockDriverState *bs, BlockOpType op, Error **errp);
548void bdrv_op_block(BlockDriverState *bs, BlockOpType op, Error *reason);
549void bdrv_op_unblock(BlockDriverState *bs, BlockOpType op, Error *reason);
550void bdrv_op_block_all(BlockDriverState *bs, Error *reason);
551void bdrv_op_unblock_all(BlockDriverState *bs, Error *reason);
552bool bdrv_op_blocker_is_empty(BlockDriverState *bs);

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546
547bool bdrv_op_is_blocked(BlockDriverState *bs, BlockOpType op, Error **errp);
548void bdrv_op_block(BlockDriverState *bs, BlockOpType op, Error *reason);
549void bdrv_op_unblock(BlockDriverState *bs, BlockOpType op, Error *reason);
550void bdrv_op_block_all(BlockDriverState *bs, Error *reason);
551void bdrv_op_unblock_all(BlockDriverState *bs, Error *reason);
552bool bdrv_op_blocker_is_empty(BlockDriverState *bs);

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