[qemu.git] / block.h

#ifndef BLOCK_H
#define BLOCK_H

#include "qemu-aio.h"
#include "qemu-common.h"
#include "qemu-option.h"
#include "qobject.h"

/* block.c */
typedef struct BlockDriver BlockDriver;

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;
} BlockDriverInfo;

typedef struct QEMUSnapshotInfo {
    char id_str[128]; /* unique snapshot id */
    /* the following fields are informative. They are not needed for
       the consistency of the snapshot */
    char name[256]; /* user choosen name */
    uint32_t vm_state_size; /* VM state info size */
    uint32_t date_sec; /* UTC date of the snapshot */
    uint32_t date_nsec;
    uint64_t vm_clock_nsec; /* VM clock relative to boot */
} QEMUSnapshotInfo;

#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 */
#define BDRV_O_CACHE_WB    0x0040 /* use write-back caching */
#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_CACHE_MASK  (BDRV_O_NOCACHE | BDRV_O_CACHE_WB)

#define BDRV_SECTOR_BITS   9
#define BDRV_SECTOR_SIZE   (1ULL << BDRV_SECTOR_BITS)
#define BDRV_SECTOR_MASK   ~(BDRV_SECTOR_SIZE - 1)

typedef enum {
    BLOCK_ERR_REPORT, BLOCK_ERR_IGNORE, BLOCK_ERR_STOP_ENOSPC,
    BLOCK_ERR_STOP_ANY
} BlockErrorAction;

typedef enum {
    BDRV_ACTION_REPORT, BDRV_ACTION_IGNORE, BDRV_ACTION_STOP
} BlockMonEventAction;

void bdrv_mon_event(const BlockDriverState *bdrv,
                    BlockMonEventAction action, int is_read);
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);

void bdrv_init(void);
void bdrv_init_with_whitelist(void);
BlockDriver *bdrv_find_protocol(const char *filename);
BlockDriver *bdrv_find_format(const char *format_name);
BlockDriver *bdrv_find_whitelisted_format(const char *format_name);
int bdrv_create(BlockDriver *drv, const char* filename,
    QEMUOptionParameter *options);
int bdrv_create_file(const char* filename, QEMUOptionParameter *options);
BlockDriverState *bdrv_new(const char *device_name);
void bdrv_delete(BlockDriverState *bs);
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_check(BlockDriverState *bs);
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_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_truncate(BlockDriverState *bs, int64_t offset);
int64_t bdrv_getlength(BlockDriverState *bs);
void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr);
void bdrv_guess_geometry(BlockDriverState *bs, int *pcyls, int *pheads, int *psecs);
int bdrv_commit(BlockDriverState *bs);
void bdrv_commit_all(void);
int bdrv_change_backing_file(BlockDriverState *bs,
    const char *backing_file, const char *backing_fmt);
void bdrv_register(BlockDriver *bdrv);

/* async block I/O */
typedef struct BlockDriverAIOCB BlockDriverAIOCB;
typedef void BlockDriverCompletionFunc(void *opaque, int ret);
typedef void BlockDriverDirtyHandler(BlockDriverState *bs, int64_t sector,
				     int sector_num);
BlockDriverAIOCB *bdrv_aio_readv(BlockDriverState *bs, int64_t sector_num,
                                 QEMUIOVector *iov, int nb_sectors,
                                 BlockDriverCompletionFunc *cb, void *opaque);
BlockDriverAIOCB *bdrv_aio_writev(BlockDriverState *bs, int64_t sector_num,
                                  QEMUIOVector *iov, int nb_sectors,
                                  BlockDriverCompletionFunc *cb, void *opaque);
BlockDriverAIOCB *bdrv_aio_flush(BlockDriverState *bs,
				 BlockDriverCompletionFunc *cb, void *opaque);
void bdrv_aio_cancel(BlockDriverAIOCB *acb);

typedef struct BlockRequest {
    /* Fields to be filled by multiwrite caller */
    int64_t sector;
    int nb_sectors;
    QEMUIOVector *qiov;
    BlockDriverCompletionFunc *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);
BlockDriverAIOCB *bdrv_aio_ioctl(BlockDriverState *bs,
        unsigned long int req, void *buf,
        BlockDriverCompletionFunc *cb, void *opaque);

/* Ensure contents are flushed to disk.  */
void bdrv_flush(BlockDriverState *bs);
void bdrv_flush_all(void);
void bdrv_close_all(void);

int bdrv_has_zero_init(BlockDriverState *bs);
int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
	int *pnum);

#define BDRV_TYPE_HD     0
#define BDRV_TYPE_CDROM  1
#define BDRV_TYPE_FLOPPY 2
#define BIOS_ATA_TRANSLATION_AUTO   0
#define BIOS_ATA_TRANSLATION_NONE   1
#define BIOS_ATA_TRANSLATION_LBA    2
#define BIOS_ATA_TRANSLATION_LARGE  3
#define BIOS_ATA_TRANSLATION_RECHS  4

void bdrv_set_geometry_hint(BlockDriverState *bs,
                            int cyls, int heads, int secs);
void bdrv_set_type_hint(BlockDriverState *bs, int type);
void bdrv_set_translation_hint(BlockDriverState *bs, int translation);
void bdrv_get_geometry_hint(BlockDriverState *bs,
                            int *pcyls, int *pheads, int *psecs);
int bdrv_get_type_hint(BlockDriverState *bs);
int bdrv_get_translation_hint(BlockDriverState *bs);
void bdrv_set_on_error(BlockDriverState *bs, BlockErrorAction on_read_error,
                       BlockErrorAction on_write_error);
BlockErrorAction bdrv_get_on_error(BlockDriverState *bs, int is_read);
int bdrv_is_removable(BlockDriverState *bs);
int bdrv_is_read_only(BlockDriverState *bs);
int bdrv_is_sg(BlockDriverState *bs);
int bdrv_enable_write_cache(BlockDriverState *bs);
int bdrv_is_inserted(BlockDriverState *bs);
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), void *opaque);
void bdrv_get_format(BlockDriverState *bs, char *buf, int buf_size);
BlockDriverState *bdrv_find(const char *name);
void bdrv_iterate(void (*it)(void *opaque, BlockDriverState *bs),
                  void *opaque);
int bdrv_is_encrypted(BlockDriverState *bs);
int bdrv_key_required(BlockDriverState *bs);
int bdrv_set_key(BlockDriverState *bs, const char *key);
int bdrv_query_missing_keys(void);
void bdrv_iterate_format(void (*it)(void *opaque, const char *name),
                         void *opaque);
const char *bdrv_get_device_name(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);

const char *bdrv_get_encrypted_filename(BlockDriverState *bs);
void bdrv_get_backing_filename(BlockDriverState *bs,
                               char *filename, int filename_size);
int bdrv_can_snapshot(BlockDriverState *bs);
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);
int bdrv_snapshot_list(BlockDriverState *bs,
                       QEMUSnapshotInfo **psn_info);
char *bdrv_snapshot_dump(char *buf, int buf_size, QEMUSnapshotInfo *sn);

char *get_human_readable_size(char *buf, int buf_size, int64_t size);
int path_is_absolute(const char *path);
void path_combine(char *dest, int dest_size,
                  const char *base_path,
                  const char *filename);

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);

#define BDRV_SECTORS_PER_DIRTY_CHUNK 2048

void bdrv_set_dirty_tracking(BlockDriverState *bs, int enable);
int bdrv_get_dirty(BlockDriverState *bs, int64_t sector);
void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector,
                      int nr_sectors);
int64_t bdrv_get_dirty_count(BlockDriverState *bs);


typedef enum {
    BLKDBG_L1_UPDATE,

    BLKDBG_L1_GROW_ALLOC_TABLE,
    BLKDBG_L1_GROW_WRITE_TABLE,
    BLKDBG_L1_GROW_ACTIVATE_TABLE,

    BLKDBG_L2_LOAD,
    BLKDBG_L2_UPDATE,
    BLKDBG_L2_UPDATE_COMPRESSED,
    BLKDBG_L2_ALLOC_COW_READ,
    BLKDBG_L2_ALLOC_WRITE,

    BLKDBG_READ,
    BLKDBG_READ_AIO,
    BLKDBG_READ_BACKING,
    BLKDBG_READ_BACKING_AIO,
    BLKDBG_READ_COMPRESSED,

    BLKDBG_WRITE_AIO,
    BLKDBG_WRITE_COMPRESSED,

    BLKDBG_VMSTATE_LOAD,
    BLKDBG_VMSTATE_SAVE,

    BLKDBG_COW_READ,
    BLKDBG_COW_WRITE,

    BLKDBG_REFTABLE_LOAD,
    BLKDBG_REFTABLE_GROW,

    BLKDBG_REFBLOCK_LOAD,
    BLKDBG_REFBLOCK_UPDATE,
    BLKDBG_REFBLOCK_UPDATE_PART,
    BLKDBG_REFBLOCK_ALLOC,
    BLKDBG_REFBLOCK_ALLOC_HOOKUP,
    BLKDBG_REFBLOCK_ALLOC_WRITE,
    BLKDBG_REFBLOCK_ALLOC_WRITE_BLOCKS,
    BLKDBG_REFBLOCK_ALLOC_WRITE_TABLE,
    BLKDBG_REFBLOCK_ALLOC_SWITCH_TABLE,

    BLKDBG_CLUSTER_ALLOC,
    BLKDBG_CLUSTER_ALLOC_BYTES,
    BLKDBG_CLUSTER_FREE,

    BLKDBG_EVENT_MAX,
} BlkDebugEvent;

#define BLKDBG_EVENT(bs, evt) bdrv_debug_event(bs, evt)
void bdrv_debug_event(BlockDriverState *bs, BlkDebugEvent event);

#endif
Commit	Line	Data
faf07963 PB	1	#ifndef BLOCK_H
	2	#define BLOCK_H
	3
a76bab49	4	#include "qemu-aio.h"
3b69e4b9	5	#include "qemu-common.h"
0e7e1989	6	#include "qemu-option.h"
d15e5465	7	#include "qobject.h"
a76bab49	8
faf07963	9	/* block.c */
faf07963 PB	10	typedef struct BlockDriver BlockDriver;
faf07963 PB	11
faf07963 PB	12	typedef struct BlockDriverInfo {
	13	/* in bytes, 0 if irrelevant */
	14	int cluster_size;
	15	/* offset at which the VM state can be saved (0 if not possible) */
	16	int64_t vm_state_offset;
	17	} BlockDriverInfo;
	18
	19	typedef struct QEMUSnapshotInfo {
	20	char id_str[128]; /* unique snapshot id */
	21	/* the following fields are informative. They are not needed for
	22	the consistency of the snapshot */
	23	char name[256]; /* user choosen name */
	24	uint32_t vm_state_size; /* VM state info size */
	25	uint32_t date_sec; /* UTC date of the snapshot */
	26	uint32_t date_nsec;
	27	uint64_t vm_clock_nsec; /* VM clock relative to boot */
	28	} QEMUSnapshotInfo;
	29
faf07963	30	#define BDRV_O_RDWR 0x0002
faf07963	31	#define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */
9f7965c7 AL	32	#define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */
9f7965c7 AL	33	#define BDRV_O_CACHE_WB 0x0040 /* use write-back caching */
5c6c3a6c	34	#define BDRV_O_NATIVE_AIO 0x0080 /* use native AIO instead of the thread pool */
b783e409	35	#define BDRV_O_NO_BACKING 0x0100 /* don't open the backing file */
016f5cf6	36	#define BDRV_O_NO_FLUSH 0x0200 /* disable flushing on this disk */
9f7965c7	37
0aa217e4	38	#define BDRV_O_CACHE_MASK (BDRV_O_NOCACHE \| BDRV_O_CACHE_WB)
faf07963	39
6ea44308	40	#define BDRV_SECTOR_BITS 9
c63782cb	41	#define BDRV_SECTOR_SIZE (1ULL << BDRV_SECTOR_BITS)
3abbc4d9	42	#define BDRV_SECTOR_MASK ~(BDRV_SECTOR_SIZE - 1)
6ea44308	43
abd7f68d MA	44	typedef enum {
	45	BLOCK_ERR_REPORT, BLOCK_ERR_IGNORE, BLOCK_ERR_STOP_ENOSPC,
	46	BLOCK_ERR_STOP_ANY
	47	} BlockErrorAction;
	48
2582bfed LC	49	typedef enum {
	50	BDRV_ACTION_REPORT, BDRV_ACTION_IGNORE, BDRV_ACTION_STOP
	51	} BlockMonEventAction;
	52
	53	void bdrv_mon_event(const BlockDriverState *bdrv,
	54	BlockMonEventAction action, int is_read);
d15e5465 LC	55	void bdrv_info_print(Monitor mon, const QObject data);
d15e5465 LC	56	void bdrv_info(Monitor mon, QObject *ret_data);
218a536a LC	57	void bdrv_stats_print(Monitor mon, const QObject data);
218a536a LC	58	void bdrv_info_stats(Monitor mon, QObject *ret_data);
faf07963 PB	59
faf07963 PB	60	void bdrv_init(void);
eb852011	61	void bdrv_init_with_whitelist(void);
b50cbabc	62	BlockDriver bdrv_find_protocol(const char filename);
faf07963	63	BlockDriver bdrv_find_format(const char format_name);
eb852011	64	BlockDriver bdrv_find_whitelisted_format(const char format_name);
0e7e1989 KW	65	int bdrv_create(BlockDriver drv, const char filename,
0e7e1989 KW	66	QEMUOptionParameter *options);
84a12e66	67	int bdrv_create_file(const char* filename, QEMUOptionParameter *options);
faf07963 PB	68	BlockDriverState bdrv_new(const char device_name);
	69	void bdrv_delete(BlockDriverState *bs);
	70	int bdrv_file_open(BlockDriverState *pbs, const char filename, int flags);
d6e9098e KW	71	int bdrv_open(BlockDriverState bs, const char filename, int flags,
d6e9098e KW	72	BlockDriver *drv);
faf07963	73	void bdrv_close(BlockDriverState *bs);
e97fc193	74	int bdrv_check(BlockDriverState *bs);
faf07963 PB	75	int bdrv_read(BlockDriverState *bs, int64_t sector_num,
	76	uint8_t *buf, int nb_sectors);
	77	int bdrv_write(BlockDriverState *bs, int64_t sector_num,
	78	const uint8_t *buf, int nb_sectors);
	79	int bdrv_pread(BlockDriverState *bs, int64_t offset,
	80	void *buf, int count);
	81	int bdrv_pwrite(BlockDriverState *bs, int64_t offset,
	82	const void *buf, int count);
	83	int bdrv_truncate(BlockDriverState *bs, int64_t offset);
	84	int64_t bdrv_getlength(BlockDriverState *bs);
96b8f136	85	void bdrv_get_geometry(BlockDriverState bs, uint64_t nb_sectors_ptr);
f3d54fc4	86	void bdrv_guess_geometry(BlockDriverState bs, int pcyls, int pheads, int psecs);
faf07963	87	int bdrv_commit(BlockDriverState *bs);
6ab4b5ab	88	void bdrv_commit_all(void);
756e6736 KW	89	int bdrv_change_backing_file(BlockDriverState *bs,
756e6736 KW	90	const char backing_file, const char backing_fmt);
5efa9d5a AL	91	void bdrv_register(BlockDriver *bdrv);
5efa9d5a AL	92
faf07963 PB	93	/* async block I/O */
	94	typedef struct BlockDriverAIOCB BlockDriverAIOCB;
	95	typedef void BlockDriverCompletionFunc(void *opaque, int ret);
7cd1e32a LS	96	typedef void BlockDriverDirtyHandler(BlockDriverState *bs, int64_t sector,
7cd1e32a LS	97	int sector_num);
3b69e4b9 AL	98	BlockDriverAIOCB bdrv_aio_readv(BlockDriverState bs, int64_t sector_num,
	99	QEMUIOVector *iov, int nb_sectors,
	100	BlockDriverCompletionFunc cb, void opaque);
	101	BlockDriverAIOCB bdrv_aio_writev(BlockDriverState bs, int64_t sector_num,
	102	QEMUIOVector *iov, int nb_sectors,
	103	BlockDriverCompletionFunc cb, void opaque);
b2e12bc6 CH	104	BlockDriverAIOCB bdrv_aio_flush(BlockDriverState bs,
b2e12bc6 CH	105	BlockDriverCompletionFunc cb, void opaque);
faf07963 PB	106	void bdrv_aio_cancel(BlockDriverAIOCB *acb);
faf07963 PB	107
40b4f539 KW	108	typedef struct BlockRequest {
	109	/* Fields to be filled by multiwrite caller */
	110	int64_t sector;
	111	int nb_sectors;
	112	QEMUIOVector *qiov;
	113	BlockDriverCompletionFunc *cb;
	114	void *opaque;
	115
	116	/* Filled by multiwrite implementation */
	117	int error;
	118	} BlockRequest;
	119
	120	int bdrv_aio_multiwrite(BlockDriverState bs, BlockRequest reqs,
	121	int num_reqs);
	122
7d780669	123	/* sg packet commands */
221f715d AL	124	int bdrv_ioctl(BlockDriverState bs, unsigned long int req, void buf);
	125	BlockDriverAIOCB bdrv_aio_ioctl(BlockDriverState bs,
	126	unsigned long int req, void *buf,
	127	BlockDriverCompletionFunc cb, void opaque);
7d780669	128
faf07963 PB	129	/* Ensure contents are flushed to disk. */
faf07963 PB	130	void bdrv_flush(BlockDriverState *bs);
c6ca28d6	131	void bdrv_flush_all(void);
2bc93fed	132	void bdrv_close_all(void);
c6ca28d6	133
f2feebbd	134	int bdrv_has_zero_init(BlockDriverState *bs);
f58c7b35 TS	135	int bdrv_is_allocated(BlockDriverState *bs, int64_t sector_num, int nb_sectors,
f58c7b35 TS	136	int *pnum);
faf07963 PB	137
	138	#define BDRV_TYPE_HD 0
	139	#define BDRV_TYPE_CDROM 1
	140	#define BDRV_TYPE_FLOPPY 2
	141	#define BIOS_ATA_TRANSLATION_AUTO 0
	142	#define BIOS_ATA_TRANSLATION_NONE 1
	143	#define BIOS_ATA_TRANSLATION_LBA 2
	144	#define BIOS_ATA_TRANSLATION_LARGE 3
	145	#define BIOS_ATA_TRANSLATION_RECHS 4
	146
	147	void bdrv_set_geometry_hint(BlockDriverState *bs,
	148	int cyls, int heads, int secs);
	149	void bdrv_set_type_hint(BlockDriverState *bs, int type);
	150	void bdrv_set_translation_hint(BlockDriverState *bs, int translation);
	151	void bdrv_get_geometry_hint(BlockDriverState *bs,
	152	int pcyls, int pheads, int *psecs);
	153	int bdrv_get_type_hint(BlockDriverState *bs);
	154	int bdrv_get_translation_hint(BlockDriverState *bs);
abd7f68d MA	155	void bdrv_set_on_error(BlockDriverState *bs, BlockErrorAction on_read_error,
	156	BlockErrorAction on_write_error);
	157	BlockErrorAction bdrv_get_on_error(BlockDriverState *bs, int is_read);
faf07963 PB	158	int bdrv_is_removable(BlockDriverState *bs);
faf07963 PB	159	int bdrv_is_read_only(BlockDriverState *bs);
985a03b0	160	int bdrv_is_sg(BlockDriverState *bs);
e900a7b7	161	int bdrv_enable_write_cache(BlockDriverState *bs);
faf07963 PB	162	int bdrv_is_inserted(BlockDriverState *bs);
	163	int bdrv_media_changed(BlockDriverState *bs);
	164	int bdrv_is_locked(BlockDriverState *bs);
	165	void bdrv_set_locked(BlockDriverState *bs, int locked);
aea2a33c	166	int bdrv_eject(BlockDriverState *bs, int eject_flag);
faf07963 PB	167	void bdrv_set_change_cb(BlockDriverState *bs,
	168	void (change_cb)(void opaque), void *opaque);
	169	void bdrv_get_format(BlockDriverState bs, char buf, int buf_size);
	170	BlockDriverState bdrv_find(const char name);
51de9760 AL	171	void bdrv_iterate(void (it)(void opaque, BlockDriverState *bs),
51de9760 AL	172	void *opaque);
faf07963	173	int bdrv_is_encrypted(BlockDriverState *bs);
c0f4ce77	174	int bdrv_key_required(BlockDriverState *bs);
faf07963	175	int bdrv_set_key(BlockDriverState bs, const char key);
c0f4ce77	176	int bdrv_query_missing_keys(void);
faf07963 PB	177	void bdrv_iterate_format(void (it)(void opaque, const char *name),
	178	void *opaque);
	179	const char bdrv_get_device_name(BlockDriverState bs);
	180	int bdrv_write_compressed(BlockDriverState *bs, int64_t sector_num,
	181	const uint8_t *buf, int nb_sectors);
	182	int bdrv_get_info(BlockDriverState bs, BlockDriverInfo bdi);
	183
045df330	184	const char bdrv_get_encrypted_filename(BlockDriverState bs);
faf07963 PB	185	void bdrv_get_backing_filename(BlockDriverState *bs,
faf07963 PB	186	char *filename, int filename_size);
feeee5ac	187	int bdrv_can_snapshot(BlockDriverState *bs);
faf07963 PB	188	int bdrv_snapshot_create(BlockDriverState *bs,
	189	QEMUSnapshotInfo *sn_info);
	190	int bdrv_snapshot_goto(BlockDriverState *bs,
	191	const char *snapshot_id);
	192	int bdrv_snapshot_delete(BlockDriverState bs, const char snapshot_id);
	193	int bdrv_snapshot_list(BlockDriverState *bs,
	194	QEMUSnapshotInfo **psn_info);
	195	char bdrv_snapshot_dump(char buf, int buf_size, QEMUSnapshotInfo *sn);
	196
	197	char get_human_readable_size(char buf, int buf_size, int64_t size);
	198	int path_is_absolute(const char *path);
	199	void path_combine(char *dest, int dest_size,
	200	const char *base_path,
	201	const char *filename);
	202
45566e9c CH	203	int bdrv_save_vmstate(BlockDriverState bs, const uint8_t buf,
45566e9c CH	204	int64_t pos, int size);
178e08a5	205
45566e9c CH	206	int bdrv_load_vmstate(BlockDriverState bs, uint8_t buf,
45566e9c CH	207	int64_t pos, int size);
178e08a5	208
23bd90d2	209	#define BDRV_SECTORS_PER_DIRTY_CHUNK 2048
6ea44308	210
7cd1e32a LS	211	void bdrv_set_dirty_tracking(BlockDriverState *bs, int enable);
7cd1e32a LS	212	int bdrv_get_dirty(BlockDriverState *bs, int64_t sector);
a55eb92c JK	213	void bdrv_reset_dirty(BlockDriverState *bs, int64_t cur_sector,
a55eb92c JK	214	int nr_sectors);
aaa0eb75	215	int64_t bdrv_get_dirty_count(BlockDriverState *bs);
8b9b0cc2 KW	216
	217
	218	typedef enum {
8252278a KW	219	BLKDBG_L1_UPDATE,
	220
	221	BLKDBG_L1_GROW_ALLOC_TABLE,
	222	BLKDBG_L1_GROW_WRITE_TABLE,
	223	BLKDBG_L1_GROW_ACTIVATE_TABLE,
	224
	225	BLKDBG_L2_LOAD,
	226	BLKDBG_L2_UPDATE,
	227	BLKDBG_L2_UPDATE_COMPRESSED,
	228	BLKDBG_L2_ALLOC_COW_READ,
	229	BLKDBG_L2_ALLOC_WRITE,
	230
	231	BLKDBG_READ,
	232	BLKDBG_READ_AIO,
	233	BLKDBG_READ_BACKING,
	234	BLKDBG_READ_BACKING_AIO,
	235	BLKDBG_READ_COMPRESSED,
	236
	237	BLKDBG_WRITE_AIO,
	238	BLKDBG_WRITE_COMPRESSED,
	239
	240	BLKDBG_VMSTATE_LOAD,
	241	BLKDBG_VMSTATE_SAVE,
	242
	243	BLKDBG_COW_READ,
	244	BLKDBG_COW_WRITE,
	245
	246	BLKDBG_REFTABLE_LOAD,
	247	BLKDBG_REFTABLE_GROW,
	248
	249	BLKDBG_REFBLOCK_LOAD,
	250	BLKDBG_REFBLOCK_UPDATE,
	251	BLKDBG_REFBLOCK_UPDATE_PART,
	252	BLKDBG_REFBLOCK_ALLOC,
	253	BLKDBG_REFBLOCK_ALLOC_HOOKUP,
	254	BLKDBG_REFBLOCK_ALLOC_WRITE,
	255	BLKDBG_REFBLOCK_ALLOC_WRITE_BLOCKS,
	256	BLKDBG_REFBLOCK_ALLOC_WRITE_TABLE,
	257	BLKDBG_REFBLOCK_ALLOC_SWITCH_TABLE,
	258
	259	BLKDBG_CLUSTER_ALLOC,
	260	BLKDBG_CLUSTER_ALLOC_BYTES,
	261	BLKDBG_CLUSTER_FREE,
	262
8b9b0cc2 KW	263	BLKDBG_EVENT_MAX,
	264	} BlkDebugEvent;
	265
	266	#define BLKDBG_EVENT(bs, evt) bdrv_debug_event(bs, evt)
	267	void bdrv_debug_event(BlockDriverState *bs, BlkDebugEvent event);
	268
faf07963	269	#endif